Download Martin Audio MA6.8Q User`s guide

MA6.8Q & MA4.8Q
User’s Guide
The Martin Experience
All material © 2013. Martin Audio Ltd. Subject to change without notice.
QS
SERIES OPER
O RATION MAN
M UAL
1. CONTENT
TS
2. Appro
ovals ............................................................................................................... ............................... 3
3. Warnings ................................................................................................................ ............................... 4
ymbols .................................................................... ............................... 4
3.1 Exxplanation off graphical sy
3.2 Im
mportant Safe
ety Instructions ........................................................................... ............................... 4
3.3 Usser responsib
bility ........................................................................................... ............................... 5
4. Welco
ome ................................................................................................................ ............................... 7
4.1 Inttroduction ....................................................................................................... ............................... 7
4.2 Ma
ain Featuress.................................................................................................. ............................... 7
5. Installation .............................................................................................................. ............................. 10
npacking......................................................................................................... ............................. 10
5.1 Un
5.2 Mo
ounting ........................................................................................................... ............................. 10
5.3 Co
ooling ............................................................................................................. ............................. 10
5.4 Op
perating voltage ............................................................................................ ............................. 11
5.5 Grrounding ......................................................................................................... ............................. 11
6. Quickk Guide Overrview .......................................................................................... ............................. 12
6.1 fro
ont Panel ove
erview ........................................................................................ ............................. 12
6.2 Re
ear Panel ovverview ....................................................................................... ............................. 13
6.3 No
omadLink / Ethernet
E
netw
work setup .............................................................. ............................. 14
7. Opera
ation and Performance .................................................................................. ............................. 15
7.1 Inttroduction ....................................................................................................... ............................. 15
7.2 Op
peration preccautions ..................................................................................... ............................. 15
7.3 Signal flow and headroom ............................................................................... ............................. 15
udio Input an
nd Output connections, se
atures .............................. ............................. 17
7.4 Au
etup and fea
7.5 Prrotection, fau
ults and warn
nings ....................................................................... ............................. 20
7.6 Frront panel mo
onitoring and
d adjustmentts ........................................................ ............................. 22
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artin Audio Ltd. 2013 Subjecct to change without
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1
7.7 No
omadLink ne
etwork and PC
P editor.................................................................. ............................. 24
8. APPE
ENDIX ............................................................................................................. ............................. 27
8.1 Ma
aintenance ..................................................................................................... ............................. 27
8.2 FA
AQ .................................................................................................................. ............................. 27
8.3 Be
ench test the
e amplifier ................................................................................... ............................. 28
8.4 Ad
dditional doccumentation ................................................................................ ............................. 28
8.5 BT
TU specificattions ........................................................................................... ............................. 28
9. TECH
HNICAL SPE
ECIFICATION
NS ........................................................................... ............................. 30
10. WAR
RRANTY ......................................................................................................... ............................. 32
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artin Audio Ltd. 2013 Subjecct to change without
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2
2. APP
PROVALS
This equipm
ment conform
ms to the requirements off the EMC ddirective 89/3
336/EEC,
amended by
y 92/31/EEC and 93/68/E
EEC and the requirementts of the Low
w Voltage
Directive 73//23/EEC, am
mended by 93
3/68/EEC.
Standards applied: EMC
C Emission EN55103-1, E3
E
EMC Immun
nity EN55103
3-2, E3, with S/N below 1% at normall operation le
evel.
Electrical Sa
afety EN6006
65, Class I
This equipment is tested
T
d and appro
oved according to the U
U.S. safety standard
A
ANSI/
UL 600
065 and Can
nadian safety
y standard CSA
C
C22.2 N O. 60065. ETL made
the tests and they are a N
Nationally Re
ecognized Te
esting Laboraatory (NRTL).
NOTE:
This eq
quipment ha
as been tes
sted and fo
ound to com
mply with th
he limits fo
or a Class A digital
device, pursuant to
o part 15 of the FCC Ru
ules. These limits are designed
d
to provide rea
asonable
nterference when the equipment is operateed in a com
mmercial
protectiion againstt harmful in
environment. This equipment generates, uses, and can
c
radiate radio frequ
uency energy and, if
stalled and used in accordance
a
with the instruction manual, m
may cause harmful
not ins
interfere
ence to rad
dio commun
nications. O
Operation of
o this equip
pment in a residentiall area is
likely to
o cause harmful interfference in w
which case the user will
w be requ
uired to corrrect the
interfere
ence at his own expens
se.
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artin Audio Ltd. 2013 Subjecct to change without
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3
3. WAR
RNINGS
3.1 EX
XPLANATI ON OF G RAPHICA
AL SYMBO
OLS
The ligh
htning symbo
ol within a trriangle is inttended to alert the user to the pressence of un-insulated
“dangero
ous voltage” within the amplifier’s encclosure that may be of su
ufficient maggnitude to con
nstitute a
risk of electric shockk to humans.
ended to alert the user to
o presence oof important operating
o
The excclamation point within a trriangle is inte
and servvice instructio
ons in the lite
erature acco
ompanying th
he product.
3.1.1 W
WARNING
To
o reduce riskk of fire or ele
ectric shock, do not expo
ose this appa
aratus to rainn or moisture.
3.1.2 C
CAUTION
To reduce the
t risk of fire or electric shock, do not remove screws. No usser-servicea
able parts
inside. Refe
er servicing to
o qualified se
ervice personnel
3.2 IM PORTANT
T SAFETY
Y INSTRUC
CTIONS
Before using your amplifier, be sure to ccarefully rea
ad the applicable itemss of these operating
o
ons and the safety sugge
estions
instructio
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
ure reference
e.
Keep this manual for futu
Heed all warrnings.
Follow all insstructions.
Do not use this
t
unit nearr water.
o or on the unit.
Do not spill water
w
or othe
er liquids into
u
Do not operate
o
the aamplifier whiile wet or
standing in liquid.
w dry cloth
h.
Clean only with
Do not block the air intake or e
exhaust portts. Install th
he unit in aaccordance with the
instructions.
plifier near h
heat producin
ng devices such
s
as radiaators, heat registers,
r
Do not operrate the amp
stoves or oth
her apparatu
us that produ
uce heat. Alw
ways operate
e the unit witth the chassis ground
wire conneccted to the ele
ectrical safetty earth. Do not defeat th
he safety purrpose of a grroundingtype plug. A grounding ty
ype plug hass two pins an
nd a third gro
ounding pronng. The third prong is
provided for your safety. If the provid
ded plug doe
es not fit into your outlet, cconsult an electrician
ment of the ob
bsolete outle
et.
for replacem
Connect only to AC pow
wer outlets ratted 100-120 V or 200-240 V, 50-60 H
Hz.
er if the powe
er cord is brroken or fray
yed. Protect the power cord
c
from
Do not use this amplifie
ed upon or pinched particcularly at the
e plugs and the point whhere it exits from the
being walke
apparatus.
pecified by th
he manufactu
urer.
Only use acccessories sp
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artin Audio Ltd. 2013 Subjecct to change without
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4
12. The unit is intended
i
to use
u in a 19”” rack. Follow
w the mounting instructioons. When a rack on
wheels is ussed, use cauttion when mo
oving the loa
aded rack to avoid injury from tipping over.
13. Unplug this apparatus du
uring lightnin
ng storms or when unused for long peeriods of time
e.
nect an amplifier output in parallel or series with any other aamplifier’s ou
utput. Do
14. Do not conn
not connect the amplifie
er output to a
any other voltage source
e, such as baattery, mains
s source,
pply, regardless of wheth
her the ampliifier is turned
d on or off.
or power sup
he output of any amplifie
er back into another
a
channel’s input.
15. Do not run th
ualified serviice personne
el. Servicing is required when the apparatus
a
16. Refer all servicing to qu
amaged in an
ny way such as:
has been da

Pow
wer-supply co
ord or plug iss damaged.

Liquid has been spilled into tthe unit
An object
o
has fallen into the unit


The unit has bee
en exposed tto rain or moisture
ot operate no
ormally

The unit does no

The unit was dro
opped or the enclosure is
s damaged
ove top or bo
ottom coverss. Removal of
o the covers
s will exposee hazardous voltages.
v
17. Do not remo
There are no
o user servic
ceable parts inside and re
emoval may void the warrranty.
nced user sh
hall always ssupervise thiis profession
nal audio equuipment, esp
pecially if
18. An experien
inexperience
ed adults or minors
m
are u
using the equ
uipment.
ed as the d
disconnect device
d
and shall
s
remainn readily ope
erable. If
19. The mains plug is use
c
the m
mains plug not
n being rea
adily operabl e, the mains
s plug for
mounted in a 19" rack causing
r
opera
able.
the entire rack must be readily
encescl.16.3 requires tha
at NomadLin
nk network ccables must be flame
20. The US Nattional Differe
rated VW-1.
3.3 US
SER RESP
PONSIBILIITY
3.3.1 M
MAINS CO NNECTION
N GROUN DING
Y
Your amplifier must be co
onnected to a grounded socket
s
outlet.
3.3.2 S
SPEAKER OUTPUT HAZARD
H
Power amplifiers are capable
c
of p
producing ha
azardous outtput voltagess. To avoid electrical
w
while the amplifieer is operatting. The
shock, do not touch any expose d speaker wiring
peaker termin
nals shall be installed by a qualified in
nstructed
external wiiring connectted to the sp
person o
or ready-mad
de leads or cords
c
of apprropriate capa
acity shall be
e used.
3.3.3 R
RADIO INT
TERFEREN
NCE
As the am
mplifier outputts produce h
high voltage, do not connect or disconnnect speake
er cables
when the mains power is on. Also,, attach the safety
s
cover on the speakker terminals
s for safe
operatio
on and to com
mply with ele
ectrical prod
duct approvals. A sample
e of this prodduct has bee
en tested
and com
mplies with the
t
limits forr the Europe
ean Electro Magnetic
M
Co
ompatibility ((EMC) directtive. This
equipme
ent has also
o been tested and found
d to comply with the lim
mits for a Claass B digita
al device,
pursuan
nt to Part 15 of the FCC
C Rules. The
ese limits are
e designed to provide reeasonable protection
p
m electrical e
equipment. This
T
product uses radio frrequency energy and
against harmful interrference from
ating instructtions, may ccause interfe
erence to
if not ussed or installled in accorrdance with these opera
other eq
quipment, su
uch as radio receivers. H
However, the
ere is no guarantee thatt interference
e will not
occur in
n a particula
ar installatio
on. If this eq
quipment do
oes cause harmful
h
inte rference to radio or
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artin Audio Ltd. 2013 Subjecct to change without
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5
televisio
on reception,, which can be determiined by turn
ning the equ
uipment on and off, the
e user is
encoura
aged to try to correct the interference
i
by one or more of the folllowing meassures:



r
the antenna.
Reorient or relocate
Increase the
e separation between the
e equipment and receiverr.
Connect the
e equipment into an outle
et on a circu
uit different from
f
that to w
eceiver is
which the re
connected.
3.3.4 S
SPEAKER DAMAGE
Your ampllifier is very powerful and
d can be pottentially dang
gerous to booth loudspea
akers and
humans alike. Many lo
oudspeakerss can be eas
sily damaged
d or destroyyed by overp
powering,
especiallly with the high power av
vailable from
m a bridged amplifier.
Always ccheck the sp
peaker’s conttinuous and p
peak power capabilities.
Even tho
ough the am
mplifier’s front panel atten
nuators can be used to reduce
r
the g ain, it is still possible
to reach
h full output power
p
if the in
nput signal le
evel is high enough.
e
3.3.5 M
MAINTENA
ANCE
For long
g-term and safe
s
operation it is recom
mmended tha
at the amplifier dust filterrs on the fro
ont panel,
as well as the insid
de of the amplifier is ccleaned regu
ularly. If the
e dust filterss and inside
e are not
ned there will be safety risks. For exa
ample the am
mplifier can ig
gnite the dusst and a fire will
w occur
maintain
due to h
high internal temperature
es. There iss also a risk that the am
mplifier will m
malfunction since
s
the
amplifierr is depende
ent of consta
ant airflow frrom front to rear. If the dust
d
filters aare not clean
n and the
amplifierr malfunction
ns, any resultant problem
ms will not be covered by the warrantyy.
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artin Audio Ltd. 2013 Subjecct to change without
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6
4. WEL
LCOME
4.1 INT
TRODUCT
TION
Thank yyou for choossing Martin Audio
A
Q Seri es power am
mplifiers for your
y
sound rreinforcemen
nt system
installatiion. We are
e confident that
t
you willl be very pleased
p
with the perform
mance, conffiguration
a long-term
m durability o
offered by the Q Series products.
p
flexibilityy, reliability, and
This ma
anual provide
es a compreh
hensive guid
de to the feattures and functionality off Q Series amplifiers.
Please rread through
h it in its enttirely to beco
ome fully acq
quainted with
h the many configuration
n options
and multiple layers of
o protection circuitry.
i
and
a
use of tthis Q Series
s product, we
w have incl uded a Quic
ck Guide
To faciliitate timely installation
w (section 6).
6 This brieff summary, in conjunctio
on with Insta
allation (secction 5), contains the
Overview
basic infformation ne
eeded to saffely install th
he amplifier and place itt in service. However, we
w highly
recomm
mend reading
g through this
t
manua l in its entirety, begin
nning with Main Featu
ures and
ontinuing thro
ough Operattion and Perfformance. As
s you becom
me thoroughly
y familiar
Technologies and co
o
yo
ou may learrn of feature
es or options
s that will affffect your ch
hoices on
with all aspects of operation,
oudspeaker system
s
confiiguration.
amplifierr modes or lo
Thank yyou again for placing yourr confidence in Martin Au
udio power amplifiers.
Audio Q Serie
es power am
mplifiers are d
designed an
nd built specifically for thee unique dem
mands of
Martin A
permane
ent installatio
on applicatio
ons. Q Seriess amplifiers offer
o
the optimum combi nation of hig
gh quality
audio re
eproduction, flexible
f
featu
ures, ease off installation, and 100% re
eliability in noormal use.
By packking four channels of re
econfigurable
e power am
mplification in
nto a 2U chhassis, the Q Series
achievess unprecede
ented “powerr density.” Th
he benefits of
o compact dimensions
d
iinclude redu
uced rack
space requirementss and minim
mal heat buil d-up. The flexible
f
outpu
ut stages ennable each amplifier
or either low impedance or constant voltage (70 V /100 V) m
mode. Nomad
dLink, an
channel to be set fo
mented as a standard feeature on all Q Series
easy-to--use networkk for monitoriing and conttrol, is implem
amplifierrs.
at the heartt of each
Although
h Q Series features
f
and facilities are
e tailored to installation applications,
a
amplifierr is the same
e advanced technology tthat has mad
de Martin Au
udio the bennchmark of quality
q
for
touring cconcert systems: excepttional sonic p
performance
e, rugged construction, pproven reliab
bility, and
protectio
on features th
hat anticipate
e every unwe
elcome poss
sibility.
Read on
n to learn.
4.2 MA
AIN FEATU
URES
Superficcially, your new Q Series
s amplifier m
may appear similar to other productss made for the
t same
purpose
e. On closer inspection, however,
h
you
u will find a number
n
of so
ophisticated technologies
s – many
proprieta
ary to the manufacturer
m
r – that are provided to ensure the best possibble performa
ance and
many ye
ears of reliab
ble operation
n. Familiariziing yourself with these te
echnologies will prove in
nvaluable
in setting
g up and opttimizing yourr loudspeake
er system.
4.2.1 C
CLASS TD AMPLIFIE
ER AND RE
EGULATE D SWITCH
H-MODE P OWER SU
UPPLY
The pate
ented Class TD technolo
ogy combiness the exceptiional efficiency of a Classs D amplifierr with the
high son
nic quality associated
a
with
w
Class B designs. Class
C
TD als
so incorporaates the sam
me basic
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artin Audio Ltd. 2013 Subjecct to change without
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7
conceptss behind Cla
ass H design
ns, but here they are refined and pus
shed to a higgher level to
o achieve
much grreater efficien
ncy.
The Class TD output sections wo
ork in conce rt with the un
nique regulated switch-m
mode power supply
s
to
opology. The
e regulated PSU ensurees stable, fu
ull output
create a superior overall powerr amplifier to
power over an extremely wide ra
ange of main
ns voltage lev
vels. Sagging
g or fluctuatiing mains vo
oltage will
ered to the lo
oudspeakers
s.
not affecct the power output delive
4.2.2 A
AMPLIFIER
R GAIN
For grea
ater flexibilityy in system integration, Q Series amplifiers allow
w gain adjusttment from +23
+ dB to
+44dB in 3 dB stepss. This featu
ure accommo
odates any combination
c
dspeaker
of input devvice and loud
or example, ifi the input signal
s
is wea
ak, the gain can be boos
sted to mainttain maximum power
type. Fo
output w
while avoidin
ng a poor signal-to-noise
e ratio. This
s gain adjusttment feature
re makes it easier to
achieve an optimal balance
b
betw
ween headroo
om and noise floor.
4.2.3 V
VOLTAGE PEAK LIMITING
The Voltage Peak Limiting
L
(VPL
L) feature al lows user adjustments that
t
determinne maximum
m voltage
ng the amplifier to the con
nnected speaker load. Whether
W
the cconnected load is low
output, tthus matchin
impedan
nce (8, 4 or 2 ohms) or high
h
impedan
nce (70 V / 100
1 V), the VPL
V
feature can be set to
t ensure
that neitther tempera
ature nor cu
urrent limitat ions are exc
ceeded befo
ore reaching the desired
d voltage
threshold.
4.2.4 P
PROTECTI ON AND PERFORM
P
MANCE OP TIMIZATIO
ON
Approprriate and relia
able power amplification
a
n is vital to any audio sys
stem. Inadeqquate or faullty power
amplifica
ation could cause dama
age to the lo
oudspeakers
s or in some
e cases to tthe power amplifiers
a
themselvves. To pre
event any damage
d
or costly serviice interrupttions, Q Seeries amplifie
ers offer
advance
ed features to
t protect bo
oth internal circuits and any connec
cted loads. T
These features even
protect tthe mains fusse that, in ex
xtreme casess, could be overloaded.
built-in Q Se
Followin
ng are short descriptions
d
of standard b
eries protectio
on features:








CPL, Current Peak Lim
miter ensuress that the amplifier’s
a
ou
utput does nnot exceed the safe
dling parame
eters of ampl ifier compon
nents.
current hand
Temperaturre protectio
on ensures that the am
mplifier will not be dam
maged by ex
xceeding
thermal limitts.
PAL, Powerr Average Limiter limits the maximum average power
p
consuumption acco
ording to
the power su
upply and ma
ains-breakerr capabilities.
VHF , Very High Frequency protecction circuits mute the ou
utput of the amplifier wh
hen nonntinuous sign
nals above 1 0 kHz are de
etected.
dynamic con
D C protec
ction ensure
es destructive
e DC signals will not ap
ppear at thee amplifier outputs. If
such conditio
ons occur an
n internal fusse opens and
d fault indicattion is displaayed.
Low impedance (short circuit) prote
ection provid
des a fault wa
arning indicaation and shu
uts down
f example,, an input sig
gnal is prese
ent and a maalfunctioning cable or
the output stage when, for
ort circuiting the
t output.
driver is sho
High imped
dance warning reports an alert when at the same time ooutput signal is high,
simultaneou
usly, and no
o current dra
raw is meas
sured. This situation m ight occur when
w
no
speakers are
e connected, or when a d
driver is blow
wn.
Low inrush
h current ensures
e
thatt the mains breaker will not trip w
when severa
al power
amplifiers arre turned on simultaneou
usly.
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artin Audio Ltd. 2013 Subjecct to change without
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8
4.2.5 N
NOMADLIN
NK / ETHERNET CON
NTROL AN
ND MONITORING NE
ETWORK
The NomadLink network allows
s easy setu p and contrrol of Q Series power amplifiers and other
nted network
k topology a
allows autom
matic detecttion and adddressing of multiple
devices.. The paten
amplifierrs, and is controlled from a PC
C via a bridge (MA-N
NET1) usin g standard TCP/IP
commun
nication. Pha
antom powerring through the network cables allow
ws the softwaare to detectt devices
that are not currenttly turned on
n or connectted to the mains.
m
This ensures very
ry high reliab
bility and
ancy levels while allow
wing conneccted amplifie
ers to rema
ain on standdby with no power
redunda
consumption.
onnections can
c be daisy
y-chained forr easier syste
em setup. Th
his also reduuces total co
omponent
Cable co
costs, siimplifies insta
allation, and makes dailyy operation more
m
convenient. There iss no need to
o create a
star topology using many switc
ches as with
h, for examp
ple, an Ethernet system
m. Individual amplifier
n
to be manually
m
en
ntered. You will automattically know where an individual
addresses do not need
amplifierr resides in the network.
A daisy chain netwo
ork-loop, in combination
c
w
with the auto
omatic addre
essing of devvices, enable
es the QM NetConttrol editor so
oftware to automatically
a
y create a pprecise pictu
ure of all
Series' proprietary MA
ed devices and
a their rela
ative position
n in the chain
n. This is the key to creatting a quick overview
connecte
of the syystem layoutt, allowing simple operat ion of a large group of amplifiers.
a
Insstallation tim
me is kept
to a minimum, and
d fast acces
ss is provide
ed to monito
or performance and soolve problem
ms during
on.
operatio
Via Nom
madLink, you can monittor all mete ring data as
s well as all faults andd warning indications
simultan
neously. Nom
madLink also
o allows you to remotely
y control pow
wer on and ppower off, as
s well as
engage Mute and So
olo functions on individua
al channels.
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artin Audio Ltd. 2013 Subjecct to change without
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9
5. INST
TALLATIO
ON
5.1 UN
NPACKING
G
Carefullyy open the shipping ca
arton and ccheck for an
ny noticeable damage. Every Marttin Audio
amplifierr is tested and inspected
d before leavving the facttory and sho
ould arrive inn perfect con
ndition. If
any dam
mage is disco
overed, pleas
se notify the shipping company imme
ediately. Onlly the consig
gnee may
institute a claim with
h the carrierr for damage
e incurred du
uring shippin
ng. Save thee carton and
d packing
arrier’s inspe
ection. Shou ld you ever need to ship the ampliifier, always use the
materials for the ca
m
original packaging materials.
5.2 MO
OUNTING
The amp
plifier is two rack units hig
gh (2U) and will fit into a standard EIA
A 19” rack.
The dep
pth is 343 mm
m (13.5”).
The weig
ght is approxximately 12 kg
k (26.4 lbs.)) depending on model typ
pe.
Free airrflow from frront to rear of the ampl ifier must be
e possible. Therefore, nno doors or rack-lids
should b
be mounted in
i front of or behind the a
amplifiers.
Amplifiers may be stacked
s
direc
ctly on top o
of each othe
er. There is no need forr spacing in between
ough this might enable more
m
conveniient installatiion of cabling
g on the rearr-panel.
units, tho
It is reco
ommended th
hat rear supp
ports be mou
unted for max
ximum long-term stabilityy.
5.3 CO
OOLING
The amplifier uses a forced-airr cooling sysstem with aiir flow from front to reaar, maintainin
ng a low
ng temperature within deffined limits. F
Front-to-rearr airflow is preferred as coooler air is present
p
at
operatin
nt in nearly all installed applicationss. (This allo
ows higher continuous
c
ppower levels
s without
the fron
encounttering therma
al problems.)) Never attem
mpt to reverrse the airflow
w. The ampllifier modules require
a pressu
ure chamber between the
e fans and he
eatsink, and this effect fu
unctions onlyy in one direc
ction.
Make su
ure that there is an ade
equate air ssupply in front of the am
mplifier, and that the rea
ar of the
amplifierr has sufficie
ent space to allow the exxhaust to esc
cape. If the amplifier
a
is rrack-mounted
d, do not
use cove
ers or doors on the front or rear of the
e rack.
Should a heat sink overheat,
o
the
e temperature
e sensing cirrcuits will mute the overh eating chann
nel. If the
power ssupply overhe
eats, anothe
er sensing ci rcuit will mute all output channels unntil the powe
er supply
cools to safe operating temperatture. An earlly warning be
efore shut do
own will be iindicated on the front
EDs, and a warning
w
will be
b sent throu
ugh the Noma
adLink netwo
ork.
panel LE
Always make sure that the du
ust-filters be
ehind the detachable frront panel aare clean to
o ensure
a
maximum possible airflow.
If the ampllifier malfunc
ctions due to
o dirty dust fillters, any req
quired repairrs are not co
overed by
the warran
nty.
ulate the ma
aximum heatt emission va
alue, when installing
i
the
e amplifiers iin rooms witth an airTo calcu
condition
ning system,, please refer to the BTU specification
ns provided in
i the Appenndix section.
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
10
5.4 OP
PERATING
G VOLTAG
GE
The label placed to the
e right of the
e mains cable
e on the rearr of the ampllifier indicate
es the AC
mains volttage for whic
ch the ampliffier is wired and approve
ed: 115 V orr 230 V. Con
nnect the
power ccable only to the AC sourrce type refe
erred to on th
he label. The
e warranty w
will not coverr damage
ng to an incorrect type of AC mains.
caused by connectin
Audio switch
h mode amp
plifiers use p
primary switc
ching. Becau
use the mainns power is rectified
Martin A
directly iin front of the
e transforme
er, the ampliffier is insensitive to mains
s frequency. It may be co
onnected
to 50 or 60Hz source
es, and actua
ally will opera
ate on line frrequencies frrom DC to 4000 Hz.
ower plug mo
ounted at the
e factory is no
ot appropriatte for your co
ountry, it cann be removed
d and the
If the po
proper cconnector wirred in its plac
ce as followss.
BLACK or BROWN
WHITE or BLUE
GREEN orr GREEN/YE
ELLOW
LIVE
EUTRAL
NE
EARTH(GR
ROUND)
Warning
g: If you are
e not 100% confident o
of your comp
petence to replace
r
the mains plug,, engage
qualified
d personnel to
t do the job..
Once a suitable AC supply is co
onnected, the
e amplifier can
c be turned
d on using tthe front pan
nel power
The amplifie
er then goes through a ssoft-start seq
quence as it self-checks its circuits. The fans
switch. T
will blow
w at high speed before dropping to idl e, and the “p
power” LED will
w illuminatee.
Inrush p
power is conttrolled and lim
mited during “soft start”, enabling multiple amplifieers to be pow
wered up
simultan
neously.
5.5 GR
ROUNDING
G
There iss no ground lift switch or
o terminal o
on the Q Se
eries amplifie
ers. The signnal ground is always
floating, via a resisto
or, to chassis
s and therefo
ore the groun
nding system is automaticc.
afety, never disconnect
d
th
he earth (ground) pin on the
t AC poweer cord.
In the interests of sa
anced input connections
c
to avoid hum
m and interfe
erence.
Use bala
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
11
6. QUI CK GUIDE
E OVERVIIEW
6.1 FR
RONT PAN
NEL OVER
RVIEW
The amp
plifier’s front panel prese
ents the perfo
ormance and
d fault condittion indicatorrs, power and remote
switchess, and a removable dust-filter cove
er. Four leve
el potentiom
meters locateed behind th
he cover
provide individual atttenuation forr the four am
mplifier chann
nels. Range is 0 dB to - innfinity. The 12 o’clock
0 dB attenua
ation.
position indicates -10
ove the dust--filter cover, loosen the th
humbscrew at
a the far leftt. This allowss removal off the dust
To remo
filters for cleaning, and
a provides access to ch
hannel attenuation. The front
f
cover m
may be made
e “tamper
ng the thumb
bscrew with P
Philips head or safety Torx screw. Thhread size is M3.
resistantt” by replacin
6.1.1 P
POWER ON
N/OFF AND REMOT E SWITCH
H
The Pow
wer on/off sw
witch is locatted on the ri ght side. A second
s
switc
ch, labelled ““REMOTE,” is above
the Pow
wer switch. When
W
the Re
emote switch
h is on, the yellow
y
LED above it willl illuminate indicating
that exte
ernal power on/off
o
commands from th
he NomadLin
nk network co
onnection wiill switch the amplifier
on or offf. When Rem
mote is activ
vated the am
mplifier will not switch on
n until a “Pow
wer On” com
mmand is
received
d from the ne
etwork. Whe
en the remote
e switch is off,
o it is not possible
p
to sw
witch amplifier power
on or offf using Noma
adLink netwo
ork control.
6.1.2 F
FRONT PA
ANEL LED’S
S
The fron
nt panel LED area include
es the follow
wing indicatorrs per channe
el:
ure warning (Yellow
(
flash
hing)
Temperatu
Temperatu
ure mute (Ye
ellow constan
nt)
Very High Frequency protection
p
ac
ctive (output muted) (Yellow)
nnel via NomadLink network (2x Yelloow)
Mute chan
Current Pe
eak Limiter (C
CPL) active (Orange flasshing),
CPL consstant (outpu
ut muted): Lo impedaance / Short circuit
detection
Fault (Yello
ow plus Orange)
Voltage Pe
eak Limiter (V
VPL) active, VPL/Clip (R
Red)
-4 dB signa
al level (Green)
-10 dB sig nal level (Grreen)
-40 dB sig nal level (Grreen),
Hi-Imp ope
en load detec
cted (Red)
When no VPL, CPL orr PAL indicattors are illum
minated, the amplifier
a
chaannel is able to
deliver ma
aximum rated output pow
wer.
All M
Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
12
Common LED’s on the
t front panel:
P
Power
on (Green)
P
Power
Avera
age Limiter acctive (PAL) (Red)
(
N
NomadLink
network
n
activve (Blue).
e network is connected,
c
tthe blue Nom
madLink LED
D will illuminaate even whe
en mains
When the
power is not
n connecte
ed. NomadLi nk receives phantom pow
wer from thee network supplied by
the MA-NET1.
6.2 RE
EAR PANE
EL OVERV
VIEW
6.2.1 T
THE DIP SW
WITCH FE
EATURES
The
e following features ma
ay be adjussted using the DIP
swittches on the rear-panel of
o the amplifieer.
Gai n - Set for all
a four channels from +223 dB to +44
4 dB in 3
dB ssteps.
Opttion active - Available for future upgrrades.
Fan
n Masked - When
W
on, en
ngages the iintelligent fan feature
lowe
ers fan speed when no signal is preseent.
VPL
L - Voltage Peak Limite
er adjustme nt is provided for 8
indivvidual levels
s. Select th
he setting m
most approp
priate for
con nected spea
akers. See Ap
ppendix for ddetails.
Mode - Select VPL
L mode betw
ween Hard a
and Soft. Fo
or channels driving sub--woofers and
d Lo-end
d to use the Hard setting for optima
al operation. For mid an
nd hi-end
frequenccies, it is recommended
drivers, always selecct Soft.
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
13
6.3 NO
OMADLINK
K / ETHER
RNET NET
TWORK S ETUP
The amplifier includ
des, as a sta
andard featu
ure, internal facilities forr the NomaddLink monito
oring and
control n
network. All features of the
t NomadL
Link network are accessible via a PC
C running prroprietary
MA Net Control softw
ware. A single rack space
A-NET1, acccepts the TCP
P/IP data
e network brridge, the MA
mputer and converts it tto the Noma
adLink protoc
cols. Even w
when no com
mputer is
stream ffrom the com
connecte
ed, the MA-N
NET1 can initiate stand-a
alone power on/off and muting
m
functioons, as well as report
any faultt or warning conditions.
The PC is connected to the MA--NET1 using
g a standard Ethernet interface and a crossed Ca
at5 cable
o switch is in the netwo
ork, standard
d “straight” C
Cat5 cables must be
(peer-to--peer setup)). If a HUB or
used. Th
he front and rear Etherne
et connection
ns on the MA
A-NET1 can be used indivvidually, but only one
PC at a time running
g MA Net Control can acccess the subnet.
dress of th
he MA-NET1
1 is 192.16
68.1.166. Thhe subnet mask is
The default fixed TCP/IP add
5.255.0. For further
f
details, please reffer to instructtions supplie
ed with the M
MA-NET1 unitt.
255.255
The No
omadLink co
onnections use
u
standarrd “straight” Cat5/RJ45 equipped ccables. For a safer
mechanical connectiion it is possible to use N
Neutrik EtherCon “XLR-ty
ype” housingss on the cables.
US Natio
onal Differen
nces cl.16.3 requires tha
at NomadLin
nk network ccables must be rated
VW-1.
T port from the
t MA-NET1 must be co
onnected to the
t IN port of the first am
mplifier. The OUT
O
port
The OUT
from the
e first amplifier in turn co
onnects to th e next amplifier’s IN porrt to form a ddaisy chain The
T OUT
port on tthe last ampllifier is conne
ected to the IN port on th
he MA-NET1 to close the loop.
There are
e electrical limitations to cable length
hs on a Nom
madLink netw
work, both in terms of
total cablle length in the loop an
nd between any two de
evices. Readd the Opera
ation and
Performance chapterr in this man
nual, or the instructions supplied wiith the MA-N
NET1, to
ensure tthe network is
i configured
d within these
e constraints
s.
Although the network will function
n as an open loop under most circumsstances, it is
s strongly
ended that th
he loop be cllosed by con
nnecting to the MA-NET 1’s IN port. Doing so
recomme
will impro
ove redundan
ncy and com munication speed.
s
Externall contact clossures and 24
4 V low/high triggers can
n be connected to GPI coonnectors on
n the MANET1 fo
or control off fire-alarm systems or external pow
wer sequencers. For m
more details read the
instructio
ons supplied
d with the MA
A-NET1.
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
14
7. OPE
ERATION AND PER
RFORMAN CE
7.1 INT
TRODUCT
TION
The follo
owing sectio
ons provide comprehensi
c
ive information on ampliffier connecti on, setup, operation,
o
and perfformance. The detailed information
i
i ncluded here
e is essentia
al to realizingg the full functionality
of the Q Series amplifiers.
7.2 OP
PERATION
N PRECAU
UTIONS



Make sure th
hat the Powe
er switch and
d the Remote
e switch on the
t amplifier front panel are
a set to
“off” before making any input, outpu
ut or network connection
ns, and alsoo before man
nipulating
the DIP swittches on the rear-panel.
Make sure that
t
the AC mains
m
voltag
ge is correct and matche
es the voltag e printed on
n the rear
panel of the amplifier (11
15 V or 230 V
V).
t
no signa
al is present at the inputt to the amplifier when ppowering up. This will
Make sure that
produce an unintentionally loud initia
al volume from
m the speakers.
7.3 SIG
GNAL FLO
OW AND HEADROO
H
OM
7.3.1 S
SIGNAL FL
LOW BLOC
CKS
All Q Se
eries amplifie
ers have the same
s
signal flow and fea
ature set. The
e only differeence is the amplifier’s
maximum output currrent per cha
annel.
ut stage of all
a Q Series amplifiers ha
as a high se
ensitivity to provide
p
amplle system he
eadroom.
The inpu
This in e
effect means that the inpu
ut stage is allmost imposs
sible to clip.
Overall a
put gain is ad
djusted using
g the input stage DIP sw
witches. Pleasse note that the gain
amplifier inp
setting is global, affe
ecting all fou
ur channels. Following th
he input stag
ge, the dediccated level control on
annel allowss signal atten
nuation from 0 dB to minu
us infinity.
each cha
The Cu
urrent Peak Limiter (CPL) section dynamically limits the
e input signnal based on
o three
parametters: sensed current leve
el, feedback from the ou
utput stage, and
a sensed voltage clip from the
VPL (an
nd output am
mplifier volta
age clip if “S
Soft Clip” ac
ctivated). This ensures tthat power output is
maintain
ned within the
e design limiits of the amp
plifier.
The adju
ustable Volta
age Peak Lim
miter (VPL) sets the maximum outpu
ut voltage annd therefore also the
maximum output pow
wer. Eight (8
8) different vo
oltage stages are availab
ble using thee DIP switche
es on the
nel. See table
e in Appendix section witth VPL rating
gs at typical loads.
rear-pan
The sop
phisticated output
o
sectio
on monitors faults and generates appropriate
a
w
warnings, which
w
are
displaye
ed on the am
mplifier front panel and trransmitted th
hrough the NomadLink
N
nnetwork. The
ese alerts
allow th
he operator to adjust sy
ystem setting
gs and thereby avoid problems.
p
In the rare ev
vent that
condition
ns are extrao
ordinarily sev
vere, the am
mplifier will sh
hut down unttil the fault orr problem se
etting has
been recctified or adjusted. These
e sensing cirrcuits are als
so employed to feed-backk voltage and current
level info
ormation, via
a a side chain, to the limiiters. Sensin
ng circuits als
so transmit loocal amplifier module
tempera
ature and po
ower supply temperature
e to the appropriate protection mecchanisms. Read
R
the
Protectio
on, Faults an
nd Warnings section for ffurther details
s.
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
15
7.3.2 H
HEADROO M, SENSIT
TIVITY AN
ND VPL / GAIN
G
SETT
TINGS
The inp
put amplifier and limiterr system is designed to
t accommo
odate extrem
mes of perfo
ormance.
Typicallyy, exceeding
g maximum in
nput by mucch as +10 dB
B will only res
sult in a 1% iincrease in distortion.
d
The follo
owing schem
matics illustra
ate how the adjustable VPL
V
and Gain circuitry aaffect input sensitivity
s
and outp
put power:
The tablles to the lefft of the draw
wing below, sshow input sensitivity for MA6.8Q witth an 8 ohm load and
141 Vpe
eak (max.) an
nd 42 Vpeak
k (min.) respe
ectively for th
he eight different gain staages between +23 dB
and +44
4 dB. The re
esulting outpu
ut power is d
displayed in dBu, Vrms and Watt in the tables to
t the far
right. Co
omplete inpu
ut sensitivity tables for alll VPL and Gain
G
settings
s for all Q Seeries models
s, can be
found att www.martin-audio.com
m.
The hea
adroom available through
h the input sttage to the clip
c limiter is shown
s
by thee dotted line
es as +10
dB at 14
41 Vpeak an
nd +20.4 dB at 42 Vpeakk. These lines
s illustrate th
he additionall signal level that can
be accepted at the in
nput before any
a significan
nt distortion will
w appear at
a the input sttage.
If you use
e the level potentiomete
p
r in the sign
nal chain to reduce the level by an
n amount
greater tha
an the headroom relative
e to input se
ensitivity, AN
ND you drivee the amplifier to clip
level, you are
a in dange
er of clipping the input sta
age before th
he current or voltage peak limiters
are activvated.
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
16
7.4 AU
UDIO INPU
UT AND O UTPUT C ONNECTI ONS, SET
TUP AND FEATURE
ES
7.4.1 B
BALANCED
D / UNBALANCED IN
NPUT CON
NNECTION
N
Four ele
ectronically balanced
b
Ph
hoenix-type inputs are available.
a
Fo
ollow the +,–– and Groun
nd labels
when co
onnecting the
e input signal.
If an unbalanced co
onnection is desired thiss can be ach
hieved by su
umming the minus (“COLD”) and
nd using the + terminal a
as the “HOT
T” signal. For the best poossible perfo
ormance,
Ground terminals an
und and minu
us wires sho uld be done at the source unit end off the cable (e
e.g. a CD
the summing of grou
player).
onnectors are
e supplied for
f attaching
g cables to the inputs. The type off connector used is:
Four co
Phoenixx Contacts, Part
P number MSTB
M
2,5/3--STZ-5,08
When linkiing the same
e source sign
nal to severa
al input chann
nels, be awaare that there
e is a limit
to the num
mber of channels an outp
put source ca
an “drive”. A typical outpuut source (e.g
g. a DSP
crossover unit) can drive up to 4 a
amplifier chan
nnels before line-drivers would be required to
buffer th
he signal.
7.4.2 O
OUTPUT OPERATIO
O
N AND CO
ONNECTIO
ON
Screw-te
erminal conn
nectors with + and – pole
es are provid
ded at each channel outtput for conn
nection of
the speakers. Make
e sure that the speake
er cables are
e connected
d correctly aand tightly, and that
e polarity is maintained
m
to
o all speakerrs in the system.
accurate
As the amp
plifier outputs
s produce hiigh voltage, do not conne
ect or disconnnect speake
er cables
when the mains
m
power is on. Also, attach the safety
s
cover on
o the speakker terminals
s for safe
operatio
on and to com
mply with electrical produ
uct approvals
s.
7.4.4 A
AMPLIFIER
R GAIN
All Q S
Series amplifiers feature
e adjustable
e input gain
n. This vers
satility enabbles the am
mplifier to
accomm
modate a mulltitude of system configurrations with various
v
inputt sources andd speaker layouts.
Amplifier gain is sett globally for all four ch annels. The
e range is +2
23 dB to +444 dB in 3 dB
d steps.
al channel fin
ne level adju
ustment is avvailable using
g the potentio
ometers on tthe front panel.
Individua
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
17
The unique adjusta
able input ga
ain feature o
of the Q Se
eries makes it easier too attain the optimum
eadroom and
d signal-to-n
noise ratio in
n the signal path. A weaak signal at the input
balance between he
equire the ga
ain to be raised in order tto achieve maximum
m
output power w
with the lowes
st signalmight re
to-noise ratio. A “hott” input signa
al, however, would requirre a lowering
g of the gain to avoid sen
nding the
e or Current clipping.
amplifierr into Voltage
See App
pendix to revview the table containing
g Gain versus
s VPL setting
g implicationns for input sensitivity
s
and outp
put power. Note
N
that Martin Audio sttrongly recom
mmend using
g a gain settting of 32dB,, this has
become something of an industrry standard having prove
ed to be a high
h
enough gain to rece
eive drive
e majority of signal proce
essing produ
ucts without them
t
having to drive theeir output too
o close to
from the
clip, whiilst being low
w enough to produce accceptable signal to noise ratio. All Maartin Audio published
p
parametters for speaker products
s have limiterr threshold settings based on an ampplifier gain of 32dB.
7.4.4.1 CHANNE L GAIN/LE
EVEL (FRO
ONT PANE
EL POTS)
Individua
al channel gain
g
(level) may
m be adjussted using th
he potentiom
meters locateed on the fro
ont panel
behind tthe dust-filterr cover. Range is from 0 dB to –Infiniity in 21 step
ps. The attennuation is log
garithmic,
with the 12 o’clock position
p
indica
ating -10 dB .
Use your fingers
f
or a screwdriver
s
tto adjust the
e potentiometters. If the leevel control is
s used to
attenuate to a lower le
evel than the
e headroom relative to in
nput sensitivvity AND the amplifier
c
the input stage bbefore the current
c
or
input is drriven into clip, there is a danger of clipping
voltage peak limiterss are activate
ed.
7.4.4.2
2 AMPLIFIE
ER SENSIT
TIVITY
Sensitivity is defined
d as how ma
any Volts (rm
ms) or dBu (re
eferred to 0.775 Vrms) aree required to
o achieve
s the output power varies
s with the loa
ad impedancce, 4 ohms is usually
full (maxximum) output power. As
the common reference.
ple maximum
m output pow
wer levels thro
ough use
Since Q Series amplifiers are capable of provviding multip
VPL feature
e, many sensitivity calcculations ma
ay be requiired for a ssingle amplifier. We
of the V
recomm
mend use of the MA NetControl edito
or to simplify
y this proces
ss. MA NetC
Control’s dev
vice view
t DIP switcch settings display, will automatically produce a sensitivity
s
page, ussed in combiination with the
calculatiion from the given data (V
VPL, Gain an
nd load).
7.4.5 O
OUTPUT VOLTAGE
V
PEAK
P
LIM ITER (VPL
L)
Voltage Peak Limite
er (VPL) is a unique fe
eature in Q Series amplifiers. It iss used to se
elect the
ailable on ea
ach output ch
hannel. Eight levels can be set usingg the DIP switches on
maximum power ava
plifier’s rear panel.
p
the amp
The valu
ues for VPL are
a displayed
d as maximu
um Voltage Peak.
P
To tran
nslate Voltagge Peak into Vrms, you
must divvide the Volta
age Peak values by 1.41 (see table).
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
18
The VPL
L allows you to set the co
orrect maxim
mum output peak
p
power for
f optimum pperformance
e with the
connecte
ed speakerss. The correc
ct setting de
epends on th
he system ty
ype (lo-or hi--impedance)) and the
specific load conneccted to the channel.
c
Sincce each cha
annel can be configured to deliver either very
p
OR high current d
draw at low impedances
s, it is impoortant to set the VPL
high volltage peak power
correctlyy.
To confiigure an individual outpu
ut channel fo
or a constan
nt voltage sy
ystem, you ssimply adjustt the DIP
switchess to the desired voltage. However, w
when using an output for a low impeddance system
m (2, 4, 8
or 16 oh
hms), then so
ometimes yo
ou need to a
adjust the VP
PL to a lowerr setting to aavoid either delivering
d
excessivvely high con
ntinuous pow
wer to the sp
peaker or ov
verheating of the output cchannel thro
ough high
current d
draw. For exxample, with a very “hot” continuous output signa
al, the tempeerature could rise to a
critical le
evel and acttivate Temp warning or e
even Temp Mute. Lowerring the VPLL setting norm
mally will
solve thiis situation.
If the Cu
urrent Peak Limiter is ac
ctive or indica
ates low imp
pedance, low
wering the VP
PL setting ca
an rectify
this situa
ation as well.
7.4.6 C
CONSTANT
T VOLTAG
GE 70 V AN
ND 100 V SYSTEMS
S
SETUP A
AND OPER
RATION
When ussing Q Serie
es amplifiers to drive con
nstant voltage (hi-impeda
ance) speakeer systems at
a 70 Vrms
or 100 Vrms, you ca
an in most cases simply connect the
e speakers to
t the ampliffier output te
erminals,
select th
he correct VP
PL setting, an
nd place the amplifier in service.
s
7.4.7 O
OUTPUT CURRENT
C
PEAK LIM ITER (CPL
L)
The Currrent Peak Limiter
L
(CPL)) ensures th
hat the ampliifier will not be damagedd by trying to
t deliver
more cu
urrent to the
e outputs tha
an that physsically possiible for the transistors. The CPL ke
eeps the
amplifierr within the Safe Operating Area. T
The CPL is non-adjustab
n
ble and has different lim
mit values
depending on modell type. The maximum
m
outtput current values
v
for the
e four Q Seriies models are:
a
Q, 24.5 Arms per channel
MA6.8Q
MA4.8Q
Q, 17.5 Arms per channel
CPL acttivity is indiccated by illu
umination off an orange LED for ea
ach channel on the fron
nt panel.
Warning
gs also are sh
hown in the MA NetConttrol software’s GUI.
A steadiily illuminated
d orange CP
PL LED indica
nce). The
ates a short circuit situattion (or very low impedan
output w
will mute for 6 seconds before
b
measu
uring the outtput impedan
nce again. T
This will contiinue until
the shorrt circuit is fixxed, at which time the o utput will automatically un-mute.
u
An input signal must be
present to allow dete
ection of short circuit or lo
ow impedanc
ce conditions
s.
If the CP
PL LED is stteadily illumiinated orang
ge while the output is m
muted and th
he -4 dB
signal LE
ED is NOT on, then th
he amplifier output is detecting
d
a short circuiit or low
impedancce condition. The problem
m can be solved by chec
cking input annd output ca
ables and
examinin
ng the state of the loudsp
peaker load. If there is no
o short circuit present, thhen the condition may
be rectiffied by lowering the VPL or input leve
els.
If the CP
PL and -4 dB
B indicators are
a lit simulta
aneously, the
en the amplifier is deliveriing too high a current
and is be
eing forced into a current limiting statte (output mu
uted).
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
19
7.5 PR
ROTECTIO
ON, FAULT
TS AND W
WARNINGS
S
7.5.1 IN
NTRODUC
CTION
The Q S
Series ampliifiers incorpo
orate a soph
histicated an
nd comprehe
ensive set off protection features.
Faults a
and warningss are indicatted on the ffront panel and
a
reported
d via the No madLink network for
indicatio
on on the MA
A NetControl GUI.
7.5.2 S
SAFE OPE RATING AREA
A
DET ECTOR (S
SOAD)
The Saffe Operating Area Detecttor (SOAD) ccompares ou
utput voltage
e against outpput current to
t ensure
that the output transistors are wo
orking inside their safe op
perating area
a.
p
faullt monitoring
g and input to
t the Curren
nt Peak Lim iter (CPL). The
T SOA
The SOA detector provides
dicated indic
cator, and itss operation is
i revealed only
o
in conjuunction with features
detectorr has no ded
such as the CPL.
7.5.3 V
VERY HIGH
H FREQUE
ENCY PRO
OTECTION
N
All Q Se
eries amplifie
ers include protection circcuits that dettect continuo
ous Very Higgh Frequency
y content
in the in
nput signal. The detection begins a
at approxima
ately 10kHz and movess upwards to
o include
ultrasonic signals If VHF
V
signals are detected
d, the outputt will mute for 6 seconds before re-me
easuring.
o continuing VHF
V
signal is detected, tthe output un
n-mutes and returns to noormal operattion.
Once no
This feature recognizzes that conttinuous full-sscale VHF signals do nott appear in “nnatural” sourrces such
d as a fault when prese nt. VHF prottection is
as music. Any such signals can therefore b e considered
al in avoiding
g damage to high frequen
ncy drivers.
essentia
The VH
HF protection
n operationa
al area is d
dependent on
o output power level and frequen
ncy. The
illustratio
on below shows a decre
easing thresh
hold on the output powe
er level, startting at appro
oximately
10 kHz a
w a -6 dB slope.
s
This d
defines the VHF
V
protectio
on area. Wheen continuou
us output
and rising with
power above the thre
eshold line is
s detected th
he VHF prote
ection becom
mes active.
ack time for the
t VHF pro
otection is inccreasingly sh
horter at high
her frequenccies. For exa
ample, an
The Atta
ultrasonic continuou
us signal will cause th e outputs to
t mute rap
pidly, where it will take
e several
onds for a 10
0 kHz continu
uous signal tto trigger the
e output mute
e. This is shoown in the illlustration
milliseco
above.
n is NOT a limiter and does not alter the amp
plifier’s frequuency respon
nse. It is
The VHF protection
ented solely to detect co
ontinuous VH
HF content. The
T amplifier will alwayss pass VHF peaks at
impleme
full powe
er, with no efffect on musical “transien
nts”.
The VHF
F protection is indicated by a yellow LED on the amplifier front panel, witth output muting for 6
secondss when in acction. It is re
eported as a fault via the
e NomadLink
k network onn the MA Ne
etControl
GUI.
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
20
If you ben
nch test the amplifier
a
usin
ng a continuo
ous, full scale sine-wavee input above
e 10 kHz,
the VHF protection will
w activate and preven
nt measurem
ment of full peak outpu
ut power.
w be muted long before maximum output power is attained.) To measure
e the true
(Output will
peak output power, use
u a burst signal.
s
7.5.4 D
DC PROTE
ECTION
DC prottection is implemented on
o each outtput to preve
ent damage to connecteed loudspeak
kers. DC
present at the outpu
ut will trigger muting and illuminate th
he fault LED indicator. Anny DC prese
ent at the
ndicates a ha
ardware malffunction that requires serrvicing of the
e amplifier.
output in
7.5.5 H
HI IMPEDA
ANCE WAR
RNING (OP
PEN LOAD
D)
A high im
mpedance (open load) condition is indicated when an input signa
al above
approxima
ately -29dB is detected and no func
ctioning loud
dspeakers aare connecte
ed to the
amplifier. The
T fault in in
ndicated by a red Sig/Hi--imp LED. Th
he indicator iis green whe
en a valid
load is present und
der the same
e input sign
nal conditions Since the Hi-impedannce detection
n initially
nal rises abo
ove -29dB, itt might cause
e the indicattor to first turrn green,
triggers only when the input sign
n red, even in
n situations where
w
no spe
eaker is connected.
and then
7.5.6 L
LO-IMPEDA
ANCE PRO
OTECTION
N (SHORT CIRCUIT)
A lo-imp
pedance or short circuit fault is dettected when current draw is high (C
Current Peak Limiter
active) a
and when, simultaneous
s
sly, output siignal is low (-4 dB LED does not illluminate). When
W
this
occurs, the amplifie
er protects the output stage from damage by
y muting thee output sig
gnal and
ng the circuiits. Indication of this fau
ult is a consttant orange illumination of the Curre
ent Peak
bypassin
Limiter (CPL) LED on the front panel. The
e protection will sequen
nce at 6 seccond interva
als to ree conditions. If the low-im
mpedance fau
ult is no long
ger detected, the amplifieer will un-mutte.
measure
ant orange, tthe output is muted, and the -4dB siggnal LED is ON,
O then
If the CPL turns consta
e into maxim
mum current protection. This situatiion is cause
ed by an
the amplifiier has gone
excessive input signal and is not d
due to a short circuit. Turn down the input signal to avoid
or remed
dy this situattion.
7.5.7 T
TEMPERAT
TURE PRO
OTECTION
N
Thermall measureme
ent points arre provided o
on each output channel as well as oon the powe
er supply.
These indicators will, if the pre
e-specified te
emperature level is exceeded, givee a high tem
mperature
n is indicated
hing Temp LED
L
on the front panel and it is
warning. This warning condition
d by a flash
d on the MA NetControl
N
GUI
G via the N
NomadLink network.
reported
As the a
amplifier app
proaches a th
hermal prote
ection thresho
old, the warn
ning LED seqquence will start
s
with
short “on
n-time” burstts. If the amp
plifier continu
ues to overhe
eat and apprroaches the ttemperature limit, the
flashing sequence will
w be define
ed by longerr and longerr on-time bu
ursts until thee protection mode is
d.
activated
If the tem
mperature be
ecomes too high to contiinue safe operation, the overheated
o
ooutput chann
nel(s) will
be mute
ed until the te
emperature re
eturns to an acceptable level.
l
Fully acttive tempera
ature protection (with mutting) is indica
ated by a constantly illum
minated Temp LED. It
will also be indicated
d as a fault via the Noma dLink network on the MA
A NetControl GUI.
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
21
Tempera
ature measu
urements will continue a
at 6 second intervals. Th
he output wiill un-mute when
w
the
channel or power su
upply returns to a safe op
perating temp
perature.
7.5.8 P
POWER AV
VERAGE LIMITER
L
(P
PAL)
The Pow
wer Average Limiter (PAL
L) controls th
he current-drrawing relatio
onship betweeen the powe
er supply
and the mains inlet. PAL limits the maximu
um average power cons
sumption acccording to th
he power
at the PSU will not ove
erload. In addition, in thee larger models that
supply ccapabilities, ensuring tha
potentially could pulll more current from the m
mains than th
he mains-fus
ses are speccified to hand
dle (more
um current drraw to prevent blowing thhe mains fuse.
than 16 A), PAL limitts the amplifier’s maximu
7.5.9 S
SOFT STAR
RT
High pow
wered amplifiers with ina
adequate inrrush limiting can pull con
nsiderable cuurrent from th
he mains
at turn-o
on. This can result in fas
st acting maiins breakers tripping. Su
uch is not thee case with Q Series
amplifierrs. The Q Se
eries amplifie
ers have verry low inrush
h power as th
he capacitorrs are charge
ed slowly
and in a controlled manner
m
ensuring that brea
akers will no
ot trip.
w under no
ormal conditio
ons, be able
e to be powe
ered up simuultaneously. If you do
Several amplifiers will,
nce problemss powering up
u multiple am
mplifiers sim
multaneously, use the Nom
madLink netw
work and
experien
the NLB
B60E to estab
blish a powerr sequence w
with a pre-se
et delay betw
ween each am
mplifier start--up.
7.6 FR
RONT PAN
NEL MONI TORING A
AND ADJU
USTMENT
TS
7.6.1 L
LEVEL IND
DICATORS
Four sig
gnal / level / clip
c LEDs per channel are
e contained on the Q Serries front pannels:
1. Orange CPL (Current Peak Limite
er) flashing indicates siignal exceedds maximum
m output
current.
2. Red VPL/CL
LIP indicates
s that the sig
gnal has exceeded maxim
mum output voltage. This activity
is governed by the rear panel
p
VPL se
ettings.
3. Green - 4 dB
B indicates output
o
signal has reached
d this level.
4. Green - 10 dB
d indicates output signa
al has reache
ed this level.
5. Signal / Hi-Imp (Green//red) indicate
es an outpu
ut signal abo
ove -44 dB. If it turns RED,
R
this
at a high impedance (“o
open” connec
ction) has been detectedd at the output. This
indicates tha
can be a fau
ult such as a disconnecte
ed cable or th
he driver is not functioninng properly. However,
H
it could ind
dicate accep
ptable high impedance, such as a sub-bass enclosure with
w
high
impedance at
a a certain frequency. W
When the -10 dB signal LED is on A
AND the Hi-Imp. LED
turns red, then the amplifier has dete
ected an ope
en load no sp
peaker is connnected).
e detailed sig
gnal level ind
dications use
e the MA NettControl edito
or applicationn.
For more
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
22
8.6.2 L
LEVEL ADJJUST
Level ad
djust potentio
ometers (one
e per chann el) are locatted behind th
he removablee dust filter cover on
the amp
plifier’s front panel.
p
With the dust cove
er in place it is not possib
ble to adjust tthe level setttings.
The pote
entiometer’s operational range is 0 d
dB to -Infinity
y in 21 steps
s. Attenuatioon is logarithmic, with
12 o’clocck position being
b
-10 dB. See table to
o the right wiith incrementts.
madLink ne
It is no
ot possible to
t adjust the individual channel atttenuation frrom the Nom
etwork or
ere on the am
mplifier.
elsewhe
Use fing
gers or a scre
ewdriver to adjust
a
the pottentiometers.
7.6.3 M
MUTE INDIICATION
Individua
al channel Mute
M
is indica
ated by illum ination of the
e two yellow LEDs at thee top of the channel’s
c
LED bargraph. Mute
e/Un-mute can
c
only be performed from
f
the nettwork using either the MA-NET1
M
he MA NetCo
ontrol PC ed
ditor.
and/or th
7.6.4 P
PERFORMA
ANCE, WA
ARNING A ND FAULT
T INDICAT
TORS








Power on/o
off (green) ind
dicates that m
mains powerr is switched on.
NomadLink
k (blue) indicates that the
e network is connected. The NomadLLink LED willl light up
even before the mains power
p
is con
nnected and switched on as it takes phantom power from
the network cable.
miter (flashin
ng orange), indicates the maximum ppossible currrent draw
CPL, Current Peak Lim
has been reached.
ent Peak Lim
miter (consttant orange), when cons
stant indicatees excessive
e current
CPL, Curre
draw cause
ed by a short circuit on
n the output or very low
w operationaal impedance. When
detected, the
e output will mute for 6 sseconds befo
ore re-measuring the outtput impedan
nce. This
will continue
e until the short
s
circuit is removed
d. CPL remains constannt orange in
n a fault
condition on
nly when an input signal iss present.
Temperaturre (yellow) warning
w
is i ndicated by
y a flashing LED. If thee amplifier goes
g
into
thermal prottect (output muted)
m
the LE
ED illuminate
es constant yellow.
y
VHF, Very High
H
Frequency protectio
on (yellow), indicates that potentiallyy harmful co
ontinuous
high frequen
ncies have be
een detected
d on the inpu
ut signal. The
e output is m
muted.
PAL, Powerr Average Limiter (red), indicates tha
at the ampliffier is limitingg because th
he power
supply and/o
or the mains--inlet fuse ha
as reached maximum
m
cap
pability.
Hardware fa
ault is indica
ated when b
both the CPL
L and VHF in
ndicators lighht up simulta
aneously.
The amplifie
er requires se
ervicing befo
ore placing ba
ack in operattion.
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23
7.7 NO
OMADLINK
K NETWO RK AND P
PC EDITO
OR
7.7.1 N
NOMADLIN
NK NETWO
ORK IN TH
HE AMPLIF
FIERS
All Q Se
eries amplifie
ers are equip
pped with the
e proprietary
y NomadLink
k network intterface. This includes
two Neu
utrik EtherCon housed RJ
J45 connecti ons: one IN and one OUT.
Use stan
ndard straigh
ht Cat5 Ethe
ernet cables w
onnectors to connect thee amplifier to
o the MAwith RJ45 co
NET1 ne
etwork bridge
e or to daisy-chain multip
ple amplifiers
s.
It is very important tha
at two IN or ttwo OUT porrts are NEVE
ER connecteed to each otther. This
e the Noma
adLink comm
munication and
a
MA NettControl edittor to exhib
bit erratic
will cause
behaviourr and display
y inaccurate d
data. Howev
ver, this situa
ation will not ddamage the amplifier
circuitry..
Up to 60
0 amplifiers can
c be conne
ected to one MA-NET1 in
n a daisy-cha
ain or closed loop.
When th
he MA-NET1
1 bridge is powered
p
up, the Nomad
dLink network receives pphantom pow
wer. This
causes the blue NomadLink LED on the am
mplifier front panel and the NomadLiink LED on the rearo light up. No
omadLink is active even when the amplifier
a
has mains poweer disconnec
cted or is
panel to
not yet p
powered up.
The amp
plifier does not
n have a sttand-by pow
wer supply for the network. The netwoork is solely powered
from the
e MA-NET1. Should an amplifier
a
fail o
or be inadve
ertently disconnected from
m the mains,, network
integrity is fully main
ntained and all
a amplifiers remain visib
ble on the sys
stem.
7.7.2 C
CONNECT ION AND SETUP
S
The NomadLink nettwork requirres use of a MA-NET1. The NomadLink netwoork is established by
NET1 OUT port
p to the firsst amplifier’s
s IN port. The
en a daisy-chhain is established by
connecting the MA-N
O
port to the next am
mplifier’s IN port,
p
and soo on. If a clo
osed loop
connecting the first amplifier’s OUT
or improved redundancy
r
(highly recom
mmended), the
t last ampllifier’s OUT port
p must
network is desired fo
be connected to the MA-NET1’s IN port.
5 RJ45-equip
pped Etherne
et cables sho
ould be usedd.
For all cconnections, straight Cat5
N
performance
p
can only be
e assured wh
hen using Caat5 cables. However,
H
Optimal NomadLink
as Nomad
dLink is only using two w
wires + groun
nd for commu
unication andd phantom power it is
possible to
t create co
onverters fro
om RJ45 to, for example, XLR connnectors usin
ng 2-wire
d cable. The NomadLink network can
n then be ope
erated using a standard tie-line in a multicore
m
shielded
signal diistribution syystem. See th
he drawing b
below for an example
e
of how
h
to createe a converterr.
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
24
If any cable
e format or connection o
other than Cat5
C
(or bette
er) and RJ455 is utilized, network
performancce may be compromised
c
d. In this eve
ent Martin Audio
A
cannoot guarantee
e that the
NomadLinkk network will be fully ope
erational.
7.7.3 N
NOMADLIN
NK NETWO
ORK CABL
LE LENGTH
HS
In situattions where the
t amplifierrs and the M
MA-NET1 will be position
ned in differeent locations at some
distance
e from each other,
o
or whe
ere groups o
of amplifiers within a sing
gle subnet w
with up to 60 units will
be installed with a diistance in be
etween, these
e general rules may be considered:



Rule 1: The maximum cable
c
length iin between any
a two devic
ces may not exceed 300 meters /
980 feet.
d-loop daisyy-chained subnet the tota
al maximum
m cable lengtth is 400
Rule 2: In a non-closed
meters / 130
00 feet.
Rule 3: In a closed-loop subnet the ttotal maximum cable leng
gth is 700 meeters / 2300 feet.
omadLink ne
etwork setups:
Below are typical examples of No
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
25
7.7.4 E
ETHERNET
T NETWOR
RK CABLE
E LENGTH S
The con
nnection bettween the MA-NET1
M
an d your PC is a standarrd Ethernet network run
nning the
TCP/IP protocol. Ca
able distance
es between M
MA-NET1 an
nd your PC follow
f
standaard rules for Ethernet
systemss.
Contact your IT expe
ert for more details.
d
7.7.5 M
MA NETCO
ONTROL EDITOR
The MA
A NetContro
ol editor is a proprieta
ary software application for monitooring and co
ontrolling
networke
ed Q Seriess power amp
plifiers. MA NetControl runs
r
on a Windows
W
PC,, which conn
nects via
Ethernett to the MA
A-NET1 netw
work bridge. MA NetControl provide
es compreheensive moniitoring of
amplifierr status as well
w as conttrol of ampliifier power on/off
o
and in
ndividual chaannel mute and solo
functionss.
Please rreview the MA
M NetContro
ol user manu
ual for more detailed
d
inforrmation.
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
26
8. APP
PENDIX
8.1 MA
AINTENAN
NCE
During n
normal operration your Q Series am
mplifier will provide trou
uble-free serrvice. The only
o
user
maintenance require
ed is to periodically vacuu
um clean the
e foam dust filters behind the front grille.
e extreme ca
ases it may be
b necessarry for authorized service personnel tto clean the inside of
In some
the amp
plifier. These
e conditions usually occu
ur after prolo
onged use in
n extreme ennvironments such as
those ussing “cracked
d oil” smoke machines. Iff you are usiing your amp
plifier in a heeavy duty application,
it is reco
ommended to
o have your amplifier
a
serv
rviced every 3 years pure
ely as a preveentative actio
on.
8.2 FA
AQ
Followin
ng are comm
mon questions
s asked abo
out Martin Au
udio's Q Serie
es power am
mplifiers toge
ether with
helpful a
answers.
Q: Whatt is the input sensitivity off the amplifie
ers?
A: Inputt sensitivity is calculated from the am
mplifier gain, maximum output
o
voltagge and load.. As gain
and outp
put voltage iss adjustable in Q Series amplifiers, you
y need to look this infoormation up in a table
found in
n the Append
dix section of
o this manua
al. Input sen
nsitivity also is automaticcally calculate
ed in the
MA NetC
Control edito
or software application.
Q: Whatt are the maxximum cable
e lengths allo
owed when using the Nom
madLink netw
work?
A: Nom
madLink usess a daisy-ch
hain topolog
gy to connec
ct amplifiers
s and an MA
A-NET1 brid
dge in a
network. Standard RJ45-equipp
R
ed Cat5 cab
bles are used
d throughoutt. The daisy chain may be made
into a clo
osed-loop byy connecting a return cab
ble to the MA
A-NET1 from the last ampplifier.
General rules of cab
ble lengths:



The maximu
um cable len
ngth in betw
ween any two
o devices ma
ay not exceeed 300 mete
ers / 980
feet.
osed-loop da
aisy-chained subnet the maximum ca
able length iis 400 meterrs / 1300
In a non-clo
feet.
t maximum
m cable length is 700 meters / 2300 fe
feet.
In a closed-lloop subnet the
mits may resu
ult in lost con
ntact with the
e devices, or loss of phanntom powerin
ng due to
Exceeding these lim
cable resistance.
ble-runs be on
o the Ethern
net network connecting
c
th
he MA-NET11 to the PC?
Q: How long can cab
A: On th
he Ethernet side,
s
normal Ethernet cab
ble limits app
ply. This is ty
ypically a maxximum of 80
0 meters /
300 fee
et between each device
e. Follow sttandard insta
allation proc
cedures for Ethernet. Distances
D
beyond1
100 meters may
m require use
u of a repe
eater, a format converter, or optical caables.
Q: Why is the Noma
adLink network a closed-lloop topology
y?
A: Tech
hnically spea
aking, the clo
osed loop is optional. Th
he purpose of
o closing thee loop is priimarily to
provide a secondaryy path to the amplifiers. Iff cables are broken or disconnected in either dire
ection, all
amplifierrs still may be
b addressed
d by the netw
work.
Q: How can I be sure that no pro
otection circu
uits or safety functions intterfere with tthe output sig
gnal?
A: If no Clip or Warrning LEDs on
o the front panel light up, you can be fully connfident that the
t rated
maximum output pow
wer in the fu
ull frequencyy range is ava
ailable for yo
our speakerss. No limiting
g or gainreduction takes place without a warning
w
or fa
ault indication
n.
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
27
8.3 BE
ENCH TES
ST THE AM
MPLIFIER
All Martiin Audio amp
plifiers are highly advancced devices which incorp
porate variouus features (e.g. VHF
make it impo
protectio
on and Powe
er Average Limiter)
L
that m
ossible to verify maximum
m performan
nce when
performiing a standard bench-tes
st with contin
nuous, full-sc
cale sine-wav
ve signals.
We therrefore highlyy recommend that you take the tim
me to read our
o documeent: “Amplifie
er testing
procedure”, found att www.martin
n-audio.com, before you bench-test a Martin Audiio amplifier.
8.4 AD
DDITIONA L DOCUM
MENTATIO
ON
In case you didn’t find what you
u were lookin
ng for in this
s Operation Manual,
M
pleaase visit www
w.martinom, where you
y
can find
d a multitud e of additio
onal docume
entation for Q Series: Drawings,
D
audio.co
technica
al data sheets, tables with
h input sensiitivity, backgrround techno
ology briefs aand much more.
8.5 BT
TU SPECIF
FICATION S
The follo
owing tables contain info
ormation on m
measured cu
urrent consum
mption as weell as calcula
ated heat
dissipatiion at three states: 1) Stand-by/idlin
S
ng; 2) Normal operation (1/8 of rateed power); and
a
3) at
e heavy duty operation (M
Max. power).
extreme
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
28
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
29
9. TEC
CHNICAL SPECIFIC
S
CATIONS
Followin
ng are the Q Series techn
nical specificcations. Thes
se figures arre accurate aat the time of
o printing
but plea
ase note tha
at all figures
s are subjecct to change without nottice. For thee most accu
urate and
current information available,
a
ple
ease visit ww
ww.martin-audio.com.
ual values fo
or Q Series amplifiers
Individu
MA6.8Q
MA4.8Q
Number o
of channels perr amplifier
4
4
Total Pow
wer Limit
6800 W
4800 W
Max. outp
put voltage perr channel
100 Vrms
100 Vrms
Max. outp
put current perr channel
24.5 Arms
17.5 Arms
Max. conttinuous outputt power all 4 ch
hannels driven at VPL: 141V and
a Gain: 35dB
B
16 ohms (per ch.)
650 W
625 W
8 ohms (per ch.)
1200 W
1000 W
4 ohms (per ch.)
1700 W
1200 W
Hi-Z: 70V//100V (per ch.)
1600 W
900 W
Mains con
nnector, 230V CE
C version
16A / CEE7
7
16A / CEE7
Mains con
nnector, 115V ETL version
20 A / 5-20P
20 A / 5-20P
Maximum mains current consumption,
c
23
30V version
11.2 A
8.7 A
Maximum mains current consumption,
c
11
15V version
22.4 A
17.4 A
THD 20 Hz - 20kHz for 1W
W
0.1%
0.1%
THD at 1kkHz and 1dB below clipping
0.05%
0.05%
Signal To Noise Ratio
112 dBA
112 dBA
Channel sseparation (Crossstalk) at 1kHz
70 dB
70 dB
Frequencyy response (1 W into 8 Ohm) +0/-3dB
6.8 Hz - 34 kHz
6.8 Hz - 34 kH
Hz
Performan
nce with Gain: 35dB
3
and VPL: 141V
1
Voltage P
Peak Limiter (VPL), max. peak
k output
VPL, selecctable per channel. (V)
141, 118, 100, 85, 71,
59, 50, 42 V
3)
Voltage Pe
eak Limiter mod
de (per ch.)
Hard / Soft
Hard / Soft
Gain and level
Amplifier g
gain selectable (all channels)
1)
Rear panel switches: 23, 26,
2 29, 32, 35, 338, 41, 44 dB
Default ga
ain
32dB
Level adju
ustment (per ch.)
Front panell pot, 21 position
n detent -inf to 0 dB,
hidden behind security pan
nel/dust filter griille
General
Input conn
nectors (per ch.))
3-pin Phoen
nix, electronically balanced
Output con
nnectors (per ch
h.)
Barrier strip
p 2-pole screw terminals
NomadLin
nk network
On board, 2 x RJ45 EtherC
Con connectors,, IN and OUT
Intelligent fans (on/off)
Depending on presence off output signal
Power on//off and Remote
e enable on/off
Individual switches
s
on front panel
Cooling
Two fans, front to back airfflow, temperaturre controlled sp
peed
Front pan
nel indicators:
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
30
®
Common
NomadLink
k Network; Pow
wer Average Lim
miter (PAL™) 2); Power on
Per chann
nel
Signal pres
sent / High impedance; -10 dB aand -4 dB outpu
ut signal;
Voltage Peak Limiter (VPL); Current Peakk Limiter (CPL): Very High
Frequency (VHF); High tem
mperature; Faullt; Mute
Operating voltage, 230 V / 115 V nomina
al
5)
Minimum p
power-up voltag
ge, 230 V / 115 V
Power Ave
erage Limiter
2)
130-265 V / 65-135 V
171 V / 85 V
Yes
Soft start / Inrush power
Yes / max. 5A
Dimensio
ons (W/H/D)
W: 483 mm
m (19”), H: 88 mm
m (2 U), D: 343 mm (13.5”)
Weight
12 kg (26.4
4 lbs.)
Finish
Black painted steel chassis
s with grey painnted steel front
Approvals
s
CE 230V, ETL
E 115V/230V, FCC
PALTM rreduces the maximum ou
utput power keeping the
e power supp
ply in safe ooperating are
ea and/or
e current dra
aw tripping th
he mains breaker. Refer to
t user’s mannual.
preventing excessive
o
values
s translate to
o rms Voltag
ge for a sine wave as: peeak/1.41 = Vrms. E.g.
The Voltage Peak output
eak is 100Vrrms and 100
0V peak is 7
70Vrms. This means that the outputss can be sett for high
141V pe
impedan
nce loads witthout the use
e of an extern
nal transform
mer.
Single cchannel opera
ation at 2 ohms and bridg
ged mode att 4 ohms are not recomm
mended.
e 230 V or 115 V version
ns available. Not selectab
ble on the am
mplifier.
Separate
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Material © Marttin Audio Ltd. 2013 Subject to change witthout notice
31
10. WA
ARRANTY
Y
Generall
This pro
oduct is manu
ufactured by
y Martin Audiio, and it is warranted
w
to be free from
m any defects
s caused
by comp
ponents or fa
actory workm
manship, und
der normal use
u and serv
vice, for a peeriod of two (2) years
from datte of purchasse from an au
uthorized Ma
artin Audio dealer.
If the prroduct fails to
o perform as
s specified d
during the wa
arranty period, Martin Auudio will undertake to
or at its optio
on, replace this
t
product at no charg
ge to its own
ner, providedd the unit is returned
repair, o
undama
aged, shippin
ng prepaid, to
o an authorizzed service fa
acility or to th
he factory.
This warrranty shall be
b null and void
v
if the pro
oduct is subje
ected to: repair work or aalteration by a person
other th
han those authorized
a
by
y us; mech anical dama
age including shipping accidents; war,
w
civil
insurrecction, misuse, abuse, operation w
with incorre
ect AC volttage, incorrrect connec
ctions or
ories; operattion with fa
aulty assoc iated equipment; or exposure
e
to inclement weather
accesso
condition
ns. Damage due to norm
mal wear and
d tear is not covered by the warrantyy. Units on which
w
the
serial nu
umber has be
een removed
d or defaced will not be eligible
e
for wa
arranty servicce.
Martin A
Audio shall not be respo
onsible for a ny incidental or consequ
uential damaages. Martin Audio’s
responsibility is limitted to the product itself. Martin Audio takes no responsibility
ty for any los
ss due to
ation of any events, or rent of repllacement eq
quipment or costs due tto a third parties
p
or
cancella
custome
er’s loss of profit,
p
or any other indirecct cost or los
sses however incurred. M
Martin Audio reserves
the righ
ht to make changes or improveme
ents in desig
gn or manufacturing wiithout assum
ming any
obligatio
on to change or improve products pre
eviously manufactured.
This wa
arranty is excclusive, and no other wa
xpressed or implied. Thiis warranty does not
arranty is ex
affect the customer’ss statutory rig
ghts.
Internattional warranties
Please ccontact your supplier or distributor
d
forr this informa
ation, as rights and disclaaimers may vary
v
from
country to country.
Technic
cal assistance and serv
vice
Internattional
If your M
Martin Audio
o product req
quires repairr, visit www.martin-audio
o.com, contaact your Marttin Audio
dealer o
or distributorr, or contact Martin Aud
dio by fax orr email to ob
btain the loccation of the
e nearest
authorized dealer or distributor.
y service
Factory
In the evvent Martin Audio
A
produc
ct requires fa
actory servic
ce, you may contact yourr Martin Audio dealer
for return instructions.
Please n
note for prod
duct return:
Use the original packking.
Include a copy of the
e sales receiipt, your nam
me; return ad
ddress, phone and fax nuumber, emaill address
and description of th
he defect.
Martin A
Audio Limited
d
Century Point, Halifa
ax Road
Cressexx Business Park, High Wy
ycombe
Buckinghamshire, UK. HP12 3SL
L
Phone: +
+44 (0)1494 535312
Fax: +44
4 (0)1494 43
38669
info@ma
artin-audio.ccom
www.ma
artin-audio.co
om
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32