Download Rolls PARAMETRIC EQUALIZER, 4 BAND => Model RPQ160 Home Equalizer

LIMITED WARRANTY
This product is warranted to the original consumer purchaser to be free from
defects in materials and workmanship under normal installation, use and service for a
period of one (1) year from the date of purchase as shown on the purchaser’s receipt.
The obligation of Rolls Corporation under this warranty shall be limited to repair
RPQ160
or replacement (at our option), during the warranty period of any part which proves
defective in material or workmanship under normal installation, use and service, provided
the product is returned to Rolls Corporation, TRANSPORTATION CHARGES PRE-
Parametric Equalizer
PAID. Products returned to us or to an authorized Service Center must be accompanied by
a copy of the purchase receipt. In the absence of such purchase receipt, the warranty
period shall be one (1) year from the date of manufacture.
This warranty shall be invalid if the product is damaged as a result of defacement, misuse, abuse, neglect, accident, destruction or alteration of the serial number,
improper electrical voltages or currents, repair, alteration or maintenance by any person or
LOW SHELF
50
100
200
party other than our own service facility or an authorized Service Center, or any use
30
20
violative of instructions furnished by us.
HIGH SHELF
4
6
10
LEVEL
0
200
2
FREQ
400
100
1.5
WIDTH
600
LEVEL
0
300
FREQ
800
166
900
WIDTH
1.1k
1.8k
400
This one-year warranty is in lieu of all expressed warranties, obligations or
16
HZ 500
1
KHZ 30
-12 dB +12 CLIP
70 HZ 1.5k
3
.3
OCT
-15 dB +15
150 HZ
3k
3
.3
OCT
-15
ACTIVE
liabilities. ANY IMPLIED WARRANTIES, OBLIGATIONS, OR LIABILITIES,
INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL BE
LIMITED IN DURATION TO THE ONE YEAR DURATION OF THIS WRITTEN
0
800
FREQ
2.1k
400
WIDTH
3.3k
LEVEL
0
2k
FREQ
4k
900
7k
WIDTH
6k
LEVEL
0
12k
LIMITED WARRANTY. Some states do not allow limitations on how long an implied
warranty lasts, so the above limitation may not apply to you.
dB +15
300 HZ
10k
3
.3
OCT
-15 dB +15
600 HZ
20k
3
.3
OCT
PWR
-15 dB +15
IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL, INCIDENTAL
OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS OR ANY OTHER
WARRANTY, EXPRESSED OR IMPLIED, WHATSOEVER. Some states do not allow
the exclusion or limitation of special, incidental or consequential damages so the above
limitation or exclusion may not apply to you. This warranty gives you specific legal
rights, and you may also have other rights which vary from state to state.
ROLLS CORPORATION
SALT LAKE CITY, UTAH
7/00
OWNERS MANUAL
INTRODUCTION
SPECIFICATIONS
Thank you for your purchasing the RPQ160 Parametric Equalizer. The RPQ160
uses T filters for equalization circuits to avoid the complexity and distortion of
state-variable filters. The RPQ160 is a four-band parametric equalizer designed
for years of reliable use. Please read this manual carefully to get the best results
from your RPQ160.
CONTROLS MAIN SECTION
Master Level:
-12 to +12 dB
Low Shelf:
16 to 500 Hz High-pass filter
High Shelf:
1 to 30 kHz Low-pass filter
Active Switch:
Activates/bypasses equalization circuitry
WARNING
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION:
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT
NOT REMOVE BACK. NO USER SERVICABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE PERSONNEL.
RISQUE DE CHOC - NE PAS ENLEVER
The symbols shown above are internationally accepted symbols that warn of
potential hazards with electrical products. The lightning flash with arrowpoint in an
equilateral triangle means that there are dangerous voltages present within the
unit. The exclamation point in an equilateral triangle indicates that it is necessary
for the user to refer to the owners manual.
These symbols warn that there are no user serviceable parts inside the unit. Do
not attempt to service the unit yourself. Refer all servicing to qualified personnel.
Opening the chassis for any reason will void the manufacturer’s warranty. Do not
get the unit wet. If liquid is spilled on the unit, shut it off immediately and take it to
a dealer for service. Disconnect the unit during storms to prevent damage.
INSPECTION
1. Unpack and inspect the RPQ160 box and package.
If obvious physical damage is noticed, contact the carrier immediately to make a
damage claim. We suggest saving the shipping carton and packing materials for
safely transporting the unit in the future.
CONTROLS FREQUENCY SECTIONS
Frequency Controls: 70Hz to 1.5khz
150Hz to 3kHz
300Hz to 10kHz
600Hz to 20kHz
Width:
.3 to 3 Octaves each band
Level:
-15 to +15 dB each band
Frequency Response:
THD:
S/N Ratio:
Max Input:
Max Output:
Input Impedance:
Output Impedance:
Shelving Slope:
Size:
Weight:
16 Hz to 30 kHz +/-3 dB
<.03%
>90 dB
+22 dB
+22 dB
10KΩ (20K balanced)
50Ω
12 dB / Octave
19" x 6" x 1.75"
(48.3 x 15.2 x 4.5 cm)
5 lbs. (2 kg)
2. Please complete the Warranty Registration Card and return it to the factory.
TABLE OF CONTENTS
Introduction
Warnings
Inspection
Table of Contents
Description
Front Panel
Rear Panel
Connection
Operation
Applications
Schematic
1
1
1
1
1
2
2
2
3-4
4
5
Specifications
Warranty
6
Back Cover
6
SCHEMATIC
DESCRIPTION
* = F A C T O R Y S E L E C T
A C M A L E
P L 1
P L U G
S W
7
4 7 K
R 6 6
R 6 5
3 3 K
4 5 6 0
1 2 0 P F
5
6
R 5 6
4 7 K
R 5 5
3 3 K
P 1 3 B
P 1 0 0 K X 2
6 5 0 - 2 0 K
F R E Q
P 1 3 A
-12V
U 8 A
*
7
Rb
Date: 19-Jul-2000
WIDTH
0
1.1k
800
FREQ
2.1k
400
1.8k
WIDTH
3.3k
LEVEL
0
2k
FREQ
4k
900
7k
WIDTH
6k
LEVEL
0
12k
HZ 500
1
KHZ 30
-12 dB +12 CLIP
70 HZ 1.5k
3
.3
OCT
-15 dB +15
150 HZ
3k
3
.3
OCT
-15 dB +15
300 HZ
10k
3
.3
OCT
-15 dB +15
600 HZ
20k
3
.3
OCT
PWR
-15 dB +15
LOW SHELF: High Pass Filter control; adjusts the amount of low frequency rolloff
from 500 Hz down to 16Hz for the entire output of the RPQ160.
HIGH SHELF: Low Pass Filter control; adjusts the amount of high frequency rolloff
from 1 kHz up to 20 kHz for the entire output of the RPQ160.
NOTE: THERE IS NO BYPASS SWITCH FOR THE LOW OR HIGH SHELF
FILTERS - SIMPLY TURN THE LOW SHELF COMPLETELY COUNTERCLOCKWISE, AND THE HIGH SHELF COMPLETELY CLOCKWISE TO BYPASS THESE
CIRCUITS.
LEVEL: Adjusts the overall signal level of the RPQ160.
NOTE: The following three descriptions are identical for all four bands of equalization.
FREQUENCY: Selects the frequency to be boost or cut. The band frequency
ranges are listed below:
Band 1:
70 Hz to 1.5 kHz
Band 2:
150 Hz to 3 kHz
Band 3:
300 Hz to 10 kHz
Band 4:
600 Hz to 20 kHz
WIDTH: (Q): Varies the shape or width of the equalization being boost or cut from
.3 to 3 octaves wide.
LEVEL: Boosts or cuts the signal of the indicated band from -15 to +15 dB.
Power Switch: Applies power to the RPQ160 when the unit is connected to a
properly grounded ac outlet. The Power LED will light when the RPQ160 is on.
REAR PANEL
C 1 6
5
1 2 0 P F
U 6 B
1 5 0 - 3 K
4 .7 K
5
P 7 B
P 1 0 0 K X 2
F R E Q
1
C 1 7
.2 7
2
C 1 5
4 7 0 P F
R 4 3
4 .7 K
R 4 2
2 2 K
*
P 7 A
-12V
P 1 0 0 K X 2
R 4 7
3
C 1 8
1 0 U
2
P 8
P 1 0 0 K
W ID T H
U 6 A
1 0 K
R 4 0
4 5 6 0
*
OUTPUT
R 4 6
4 7 K
R 4 5
3 3 K
4 5 6 0
R 4 4
B A N D 2
R 3 8
*
7 0 - 1 .5 K
C 1 3
.4 7
P 4 A
P 1 0 0 K X 2
R 3 7
C 1 4
1 0 U
-12V
R 4 1
2 2 K
6
1 2 0 P F
P 4 B
F R E Q
1
3
W ID T H
P 1 0 0 K
U 5 A
2
1
P 5
4 5 6 0
1 2 0 P F
C 1
R 3 0
1 0 K
3
R C A X 2
J 2 A
2
R 3 3
4 .7 K
C 1 1
.0 0 1
R 3 2
2 2 K
R 2 8
*
-12V
R 3
1 0 K 1 %
U 1 A
R 2
1 0 K 1 %
P 1 0 0 K X 2
C 1 2
5
R 3 4
4 .7 K
R 3 1
2 2 K
B A N D 1
P 1 A
P 1 0 0 K C
1
4 5 6 0
2
R 1
1 0 K 1 %
FREQ
800
R 6 7
C 2 6
1 0 U
P 1 4
W ID T H
P 1 0 0 K
*
R 5 7
+12V
R 3 5
3 3 K
4 5 6 0
U 5 B
6
2
R 7
3 .3 K
C 4
.1
H P F
5
+12V
U 1 B
5
6
6
R 6
3 3 K
R 5
1 K
.2 7
R 3 6
4 7 K
7
4 5 6 0
+12V
4
P 1 0 0 K C
P 1 B
S H E L F
L O W
P H O N E 1 /4
J 1
3
F P C
4
R 4
1 0 K 1 %
4
1
1
2
X L R
3
3
1
4
C 3
4
5
1 N 4 1 4 8
6
8
J 3
300
166
400
16
MADE IN U.S.A.
3
3
C R 1
LEVEL
0
900
ACTIVE
CAUTION
4
1
1 2 0 P F
WIDTH
600
120 VAC
50/60 Hz 15 VA
6
8
C 2
FREQ
400
SERIAL NUMBER
8
5
200
100
3
2
P 1 0 0 K X 2
1 0 K
4 5 6 0 R 6 0
P 1 0 0 K X 2
P 1 0 A
C 2 2
1 0 U
P 1 0 0 K
1 0 K
R 8
LEVEL
0
7
R 9
4 .7 K
W ID T H
P 1 1
P 1 0 0 K W
P 2
HIGH SHELF
4
6
10
2
1.5
3
2
4 5 6 0
-12V
U 7 A
1 0 K
5
R 5 0
.1
1
C 2 1
2
1
C 2 5
.0 4 7
2
R 6 3
3 .3 K
1 2 0 P F
R 6 2
R 5 8
*
P 1 0 B
P 1 0 0 K X 2
3 0 0 - 1 0 K
5
B A N D 4
3 .3 K
5
F R E Q
R 5 3
3 .3 K
C 1 9
2 2 0 P F
R 4 8
*
R 5 2
2 2 K
R 5 4
3 .3 K
1 2 0 P F
C 2 0
5
6
P 1 0 0 K
P 1 0 0 K
P 1 2
P 1 0 0 K
P 9
P 6
P 1 0 0 K
R 1 2
1 0 K
U 8 B
+12V
7
4 5 6 0
+12V
C U T /B O O S T
-12V
B A N D 3
2
7
4 5 6 0
U 2 B
+12V
R 1 1
1 0 K
R 1 0
4 .7 K
4
C R 2
1 N 4 1 4 8
30
20
E 3
1
1
1
S P S T
3 .3 K
6
1
3 .3 K
3
1
1 2 0 P F
R 1 4
1 0 K
4 5 6 0
C 6
L D R R
L O A D
1 2 0 P F
8
6
1
1 0 K
3
C 5
1
4
1 0 0 K
3
4
3
4
2 K
6
D 3
Q 1
4
+12V
8
6
P 1 0 0 K C
2
8
O V E R
Document Number: RPQ160SCH
A
C 3 0
5 0 3
C 2 9
5 0 3
D 7
N 4 0 0 1
D 6
T 1
C 8
.0 0 1
5
P 1 0 0 K C
P 3 B
4
.0 0 2 7
H I S H E L F
C 7
3
1
M C I 4 0 6 -4 0 2 4
7
4 5 6 0
U 3 B
+12V
6
L D R R
S W 1 A
D P D T
5
D 2
E 2
E 1
3
2
R 1 7
1 0 K
-12V
6
4
S W 1 B
D P D T
4 .7 K
2
8
R 1 9
Size:
Title: RPQ160 PARAMETRIC EQ
C 3 4
1 0 U
3
O
I
C 3 2
1 0 0 0 U F 1 6 V
2
D 5
D 4
-12V
U 3 A
C 2 7
5 0 3
4 5 6 0
3
2
1 0 K
5
4
5
1
C 2 8
5 0 3
-12V
8
6
U 1 0
7 9 1 2
O
I
7 8 1 2
U 9
1
C 3 1
1 0 0 0 U F 1 6 V
1
4 5 6 0
7
R 2 6
5 1
5 1
U 4 A
4
R 2 4
4 5 6 0
R 6 8
-12V 1 0 K
C 3 3
1 U C 3 5
5 0 3
+12V
3
R 2 7
5 1
C 1 0
1 0 U
C 9
1 0 U
G
2
+12V
1
1 0 K
G
R 2 3
ROLLS CORPORATION
5968 South 350 West
Salt Lake City, UT 84107
D 1
L D S G
P O W E R
2
1 0 0 K
2
P H O N E 1 /4
J 4
R C A X 2
J 2 B
J 5
X L R
1
3
3
R 1 8
LOW SHELF
50
100
200
Sheet: 1 of 1
J A C K M
R e v :
FRONT PANEL
RISK OF ELECTRIC SHOCK
DO NOT OPEN
RISQUE DE CHOC - NE PAS ENLEVER
WARNING: DO NOT EXPOSE THIS EQUIPMENT TO RAIN
OR MOISTURE. TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT NOT REMOVE BACK. NO USER SERVICABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
NRTL /C
INPUT
OUTPUT: Balanced XLR and unbalanced 1/4” and RCA jacks for connection to a
mixing board, power amplifier or recording device.
INPUT: Balanced XLR and unbalanced 1/4” and RCA jacks for connection to the
output of a mixing board, instrument, or other device with the signal to be processed.
CONNECTION
Turn off all equipment before making any connections. Mount the RPQ160 in a
properly grounded rack, and make sure the rack is properly ventilated. Ambient
temperatures should not exceed 113 degrees F (45 degrees C) when the equipment is in use. Connect your RPQ160 using XLR, RCA or 1/4” connectors.
Connect the AC power cord to a properly grounded AC outlet. Route the AC
power cord away from audio lines.
2
OPERATION
OPERATION Cont.
The two shelving filters are designed to roll off the frequency response of the
signal; the Low Shelf cuts the frequencies 3 dB at the control’s indicated setting
and rolls off below, and the High Shelf cuts the frequencies 3 dB at the indicated
setting and rolls of above. The Low Shelf Sweep Diagram shows the response
curve of the Low Self filter at its minimum and maximum setting.
O dB
Set at 16Hz
Shown below is the typical symmetrical response curve of a swept parametric
band filter with the Frequency control set at 1 kHz, the Level set at +15 and -15
dB, and the Octave control set at .3, .5, 1, and 3. These curves remain consistent
over the frequency spectrum, they simply shift to whatever frequency setting is
indicated by the Frequency control.
The shape is most narrow when the OCT control is set at .3, and is widest at the
3 setting.
Set at 500 Hz
20
20 40 80 160 320 640 12k 16k 20k
Frequency (Hz)
15
LOW SHELF SWEEP DIAGRAM
10
O dB
Set at 30 kHz
Set at 1 kHz
20 40 80 160 320 640 12k 20k 40k
Frequency (Hz)
5
Amplitude, 5 dB/division
The High Shelf Sweep Diagram shows the response curve of the High Self filter at
its minimum and maximum setting.
-5
-10
-15
-20
50
100 200
600 1k
Frequency (Hz)
2k
6k 10k 20k
HIGH SHELF SWEEP DIAGRAM
Please note that when the Low Shelf is set fully counterclockwise (16 Hz), the
filter is essentially bypassed. Similarly, when the High Self control is set fully
clockwise (30 kHz), that filter is essentially bypassed.
The Level control has a detente at the center (0 dB) position. if the Clip LED is
lighting, the Level control may be turned counterclockwise to reduce the gain of
the RPQ160, thereby reducing the clipping. If a weak signal is present, the Level
control may be tgurned up (clockwise) to increase the gain. To achieve the
maximum signal to noise ratio, the Level should be set 3 dB below the clipping
level. This is done by adjusting the Level control with a normal signal present until
the Clip LED lights, then turning the Levl down to just below the point when the
LED goes out.
APPLICATIONS
The RPQ160’s precise equalization has many applications including school or
church gymnasiums, home or professional recording studios, live sound, or
musical instruments.
When coupled with a spectrum analyzer, the RPQ160 can match exactly the
properties of typical acoustic resonances and reflections, and make immediate
improvements to any installed system’s amplitude and phase response.
Live applications include equalizing trouble spots where a mix may be muddy, too
harsh, flat, and even eliminate feedback precisely without affecting the flavor of
the overall sound.
Recording studios benefit from the RPQ160’s precise equalization in notching
trouble frequencies that remove from a performances musicality, or by sweetening
up a final mix.
3
4