Download VHD Preamp User Guide

100 - 240 VAC, 50/60 Hz
MAX 30WATTS
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE THIS PANEL OR ANY ATTACHED
COMPONENTS. NO OPERATOR SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL
ONLY. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
Our aim is to create audio products that absorb
you, place you within the performance and deliver
a listening experience beyond expectation.
A/B CONTROL
RIGHT
LEFT
KV2 AUDIO, MANUFACTURED IN THE EUROPEAN UNION,
OUTPUT B
At KV2 Audio our vision is to constantly develop
technologies that eliminate distortion and
loss of information providing a true dynamic
representation of the source.
SERIAL NUMBER
OUTPUT A
WWW.KV2AUDIO.COM
RIGHT
LEFT
The future of sound.
Made perfectly clear.
AC IN
LEFT
RIGHT
UNBAL. INPUT
RIGHT
BAL. INPUT
LEFT
MIC. INPUT
48V
CLIP
-20dB
TECHNOLOGY
ON
0
BASS
0
+15 dB
TREBLE
0
+12 dB -15 dB
HIGH MID
0
+12 dB -12 dB
LOW MID
0
+15 dB -12 dB
MICROPHONE
500 Hz -15 dB
HIGH PASS
100 Hz
+55 dB 10 Hz
GAIN
+6 dB
00
VOLUME
-20 dB
0 dB
BAL
CLIP
UNBAL
-10dB
INPUT
+6 dB
GAIN
+30 dB -6 dB
LINE
BASS
0 dB
+6 dB
-6 dB
+6 dB
TREBLE
0 dB
00
VOLUME
-20 dB
0
OUTPUT
A
B
VERY HIGH
DEFINITION
PREAMP
SELECT
POWER
VHD Preamp
User Guide
VHD Preamp
Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS
Observe all instructions and follow warnings marked on the equipment and in the user’s manual.
Connect the equipment only to a source of proper mains voltage.
Do not attempt to switch on any equipment that has been dropped, that is damaged, or has
had liquid penetration, or if malfunctions have occurred and their nature requires a repair action. The
supply cable shall be made by a person having proper qualifications.
WARNING
The equipment is designed in Class I and shall be connected to a wall socket having
protective earthing.
The mains plug and supply cable shall remain easy accessible, as this is used for disconnection of the
equipment from the supply source if necessary.
Never interrupt earthing due to safety reasons.
Do not place the equipment close to heating bodies or other sources of heat and protect it against
direct sunlight.
The equipment must not come into contact with open flames.
Ventilation of the equipment must not be obstructed by covering of ventilation openings.
The equipment must not be exposed to dripping or splashing liquid or water and excessive humidity.
Any object filled with any liquid shall not be placed on the equipment.
The triangle with a symbol of a lightning marks parts of the equipment under
life jeopardizing voltage, whose values may cause an injury from electric
shock.
Safety Instructions
The symbol indicating that the equipment is manufactured in compliance
with EU standards.
2
The triangle with a symbol of an exclamation mark in the text marks
important instructions for operation, setting and maintenance.
Basic Description
The VHD Preamplifier is a Very high definition, small stand-alone microphone and stereo inputs signal
mixer.
Primarily built for high quality, easy presentation and comparisons of two individual systems using the
same source, the applications for this mixer are comprehensive and extremely useful.
The VHD Preamp features a stereo pair of balanced line inputs, stereo RCA phono connectors, and a
very high quality VHD microphone preamplifier. The microphone channel features phantom power,
four band equalization and a variable high pass filter.
The VHD Preamplifier also features two switchable A or B outputs, to allow a simple comparison of
systems between the two outputs. Both A and B outputs have line drivers built into them to maintain
audio signal integrity over long cable lengths.
VHD Preamp
Description
Front panel
Microphone preamplifier
HIGH PASS
100 Hz
GAIN
+6 dB
TECHNOLOGY
BASS
0
LOW MID
0
Stereo preamplifier
HIGH MID
0
TREBLE
0
VOLUME
-20 dB
GAIN
BASS
0 dB
INPUT
BAL
TREBLE
0 dB
VERY HIGH
DEFINITION
PREAMP
VOLUME
-20 dB
POWER
UNBAL
48V
-20dB
ON
CLIP
CLIP
0
+55 dB 10 Hz
500 Hz -15 dB
+15 dB -12 dB
+12 dB -12 dB
+12 dB -15 dB
+15 dB
00
SELECT
-10dB
0 dB
A
+6 dB
MICROPHONE
+30 dB -6 dB
+6 dB
-6 dB
+6 dB
00
B
0
LINE
OUTPUT
Rear panel
AC IN
SERIAL NUMBER
A/B CONTROL
RIGHT
OUTPUT B
LEFT
RIGHT
OUTPUT A
LEFT
UNBAL. INPUT
RIGHT
BAL. INPUT
LEFT
MIC. INPUT
RIGHT
100 - 240 VAC, 50/60 Hz
MAX 30WATTS
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE THIS PANEL OR ANY ATTACHED
COMPONENTS. NO OPERATOR SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL
ONLY. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
LEFT
KV2 AUDIO, MANUFACTURED IN THE EUROPEAN UNION,
WWW.KV2AUDIO.COM
Block diagram
PREAMPLIFIER CLIP
HIGH PASS FITER
EQUALIZATION
LINE DRIVER
BASS
RIGHT
LMID HMID TREBLE
UNBALANCED INPUT
PREAMPLIFIER
HIMID
TREBLE
BASS
LOWMID
HIGH PASS
-20 dB
GAIN
VOLUME
48 V
STANDBY
MUTE
OUTPUT A
Description
MIC. INPUT
EQUALIZATION
RIGHT
LINE DRIVER
LEFT
LINE DRIVER
RIGHT
CLIP
LEFT
BAL. INPUT
RIGHT
MIXER
STANDBY
MUTE
VOLUME
INPUT
LMID HMID TREBLE
TREBLE
BAL. INPUT
LEFT
GAIN
-10 dB
BASS
BASS
OUTPUT B
OUT. SEL.
DRIVER
A/B SELECT
OUTPUT SELECT
LINE DRIVER
LEFT
3
Using the system
Demonstration / presentation mixer
VHD Preamp
Two sound systems comparing
System B
System A
System B
System A
VHD Preamp Rear view
AC IN
A/B CONTROL
SERIAL NUMBER
RIGHT
OUTPUT B
LEFT
RIGHT
OUTPUT A
LEFT
UNBAL. INPUT
RIGHT
BAL. INPUT
LEFT
MIC. INPUT
Using the system
RIGHT
100 - 240 VAC, 50/60 Hz
MAX 30WATTS
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE THIS PANEL OR ANY ATTACHED
COMPONENTS. NO OPERATOR SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL
ONLY. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
LEFT
KV2 AUDIO, MANUFACTURED IN THE EUROPEAN UNION,
WWW.KV2AUDIO.COM
Stereo player
Unbalanced Input
Balanced Input
Narrator's microphone
4
Using the system
Simple AV mixer-Projector sound and a microphone
VHD Preamp
Sound system
Sound system
Input
VHD Preamp Rear view
AC IN
SERIAL NUMBER
A/B CONTROL
RIGHT
OUTPUT B
LEFT
RIGHT
OUTPUT A
LEFT
UNBAL. INPUT
RIGHT
BAL. INPUT
LEFT
MIC. INPUT
RIGHT
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE THIS PANEL OR ANY ATTACHED
COMPONENTS. NO OPERATOR SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL
ONLY. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
LEFT
KV2 AUDIO, MANUFACTURED IN THE EUROPEAN UNION,
WWW.KV2AUDIO.COM
Stereo
player
Narrator's microphone
Using the system
100 - 240 VAC, 50/60 Hz
MAX 30WATTS
5
Using the system
Replacement FOH mixer
VHD Preamp
Replacement mixer for FOH when the main system is being taken down after a concert. Many venues
now insist that at least one pair of speakers and a mixer/mic is kept available during breakdown.
Main system - PA (A)
Main system - PA (A)
Replacement PA (B)
Replacement PA (B)
Replacement system
In
Main system
In
VHD Preamp Rear view
AC IN
SERIAL NUMBER
A/B CONTROL
RIGHT
OUTPUT B
LEFT
RIGHT
OUTPUT A
LEFT
UNBAL. INPUT
RIGHT
BAL. INPUT
LEFT
MIC. INPUT
RIGHT
Using the system
100 - 240 VAC, 50/60 Hz
MAX 30WATTS
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE THIS PANEL OR ANY ATTACHED
COMPONENTS. NO OPERATOR SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL
ONLY. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
LEFT
KV2 AUDIO, MANUFACTURED IN THE EUROPEAN UNION,
WWW.KV2AUDIO.COM
Stereo
player
Narrator's microphone
6
Specifications
System Acoustic Perfomance
-3dB Response
Total Harmonic Distortion
10Hz ÷ 50kHz
<0.0005%
Output Channels
Number of Channels
Max. Output Voltage
Max. Output Current
2
14V / 7V (50Ω) RMS
450mA
Signal Input
Input Channels
Input Impedance
Mic input
Line input
5
2kΩ Mic / 20kΩ Balanced IN / 10kΩ RCA
Phantom power, -20dB, Input level
RCA/Balanced, 2 band EQ, -10dB
Signal Output
Output channels
Output Impedance
Features
High Pass Filter
Equalization
stereo A / stereo B
50Ω
IEC 320
100÷250V@50÷60Hz
Physical Dimensions
Height
Width
Depth
Weight
44.5mm (1.75")
483mm (19.0")
177.8mm (7.0")
2.5kg (5.5lbs)
Input / Output connectors wiring
XLR Balanced Input and Output connectors
2
1
3
Output
1
2
3
1 = Ground
2 = Hot (+)
3 = Cold (-)
Specifications
10Hz ÷ 500Hz
4-band EQ
Power
Power Connector
Operating Voltage Range
Input
VHD Preamp
VHD Preamp - SPECIFICATIONS
7
The future of sound.
Made perfectly clear.
At KV2 Audio our vision is to constantly develop
technologies that eliminate distortion and
loss of information providing a true dynamic
representation of the source.
Our aim is to create audio products that absorb
you, place you within the performance and deliver
a listening experience beyond expectation.
KV2 Audio, Nádražní 936, 399 01 Milevsko, Czech Republic
T +44(0)1423 816868 F +44(0)1423 816869
www.kv2audio.com
KVV120031-00-01-0