INTRODUCTION
Thank you for your purchasing the RPQ160 P arametric Equaliz er. The RPQ160
uses T filters for equalization circuits to avoid the complex ity and distortion of
state- va riable filters. The RPQ160 is a four-band parametric equaliz er designed
for years of relia ble us e. P lease read this manual carefully to get the best results
from your RPQ160.
INSPECTION
1. U npack and inspect the RPQ160 box and pac kag e.
If obvious physical damage is noticed, contact the car rier immediately to make a
damage c laim. We suggest s av ing the shipping c ar ton and pac king mater ials for
sa fely transpo rting the unit in the future.
1
ROLLS CORPORATION
5968 S 350 W
Murray, Utah 84107
1
RPQ160B.SCH
B
2 April 2009
Title
Size:
D
ocument Number:
Date:
Rev:
Sheet
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f
RPQ160b PARAMETRIC EQUALIZER
Rb
POWER
+12V
+12V
+12V
+12V
HPF
+12V
+12V
WIDTH
FREQ
CUT/BOOST
WIDTH
FREQ
WIDTH
FREQ
WIDTH
FREQ
BAND 1
BAND 3
BAND 2
BAND 4
LOW SHELF
HI SHELF
OVER LOAD
+12V
+12V
+12V
+12V
+12V
70 - 1.5K
150 - 3K
300 - 10K
650 - 20K
* = FACTORY SELECT
R3
10K 1%
R2
10K 1%
R1
10K 1%
C2
120PF
C5
120PF
1
2
3
SW1A
DPDT
R4
10K 1%
C1
120PF
C3
.27
C4
.1
4
6
5
P1B
P100KC
1
3
2
P1A
P100KC
4
6
5
P3B
P100KC
1
3
2
P3A
P100KC
P2
P100KW
2
3
1
4
U1A
4560
2
3
1
4
U2A
4560
6
5
7
8
U2B
4560
6
5
7
8
U1B
4560
2
3
1
4
U3A
4560
4
5
6
SW1B
DPDT
R5
1K
R6
33K
R7
3.3K
R8
10K
R9
4.7K
R10
4.7K
R11
10K
R14
10K
R12
10K
R13
100
R15
3.3K
R17
10K
R18
100K
R19
10K
R20
2K
R21
4.7K
R22
10K
R23
10K
R24
51
R26
51
R25
100K
R27
51
6
5
7
8
U4B
4560
2
3
1
4
U4A
4560
J1
PHONE 1/4
1
2
J2
A
RCAX
2
2
3
J2
B
RCAX
2
J4
PHONE 1/4
P9
P100K
P5
P100K
P8
P100K
P11
P100K
P14
P100K
2
3
1
4
U5A
4560
6
5
7
8
U5B
4560
2
3
1
4
U6A
4560
6
5
7
8
U6B
4560
2
3
1
4
U7A
4560
6
5
7
8
U7B
4560
R40
10K
R41
22K
R42
22K
R50
10K
R51
22K
D1
LDBLU
C6
120PF
C7
.0027
C9
10U
C11
.001
C14
10U
C18
10U
R52
22K
C22
10U
C26
10U
C10
10U
C33
2200U
C36
47U
CR1
1N4148
CR2
1N4148
CR3
1N4148
CR4
1N4148
C45
503
Q1
2N3904
D2
LDRR
D3
LDRR
2
3
1
4
U8A
4560
6
5
7
8
U8B
4560
C8
.001
R16
3.3K
1
2
3
J3
XLR
F PC
6
5
7
8
U3B
4560
P15
P100K
R30
10K
R32
22K
R31
22K
R35
33K
R36
47K
1
3
2
P4A
P100K X2
C13
.47
C12
120PF
4
6
5
P4B
P100K X2
R44
4.7K
1
3
2
P10A
P100K X2
4
6
5
P10B
P100K X2
C20
120PF
R56
47K
R55
33K
P12
P100K
P6
P100K
R54
3.3K
R53
3.3K
1
3
2
P13A
P100K X2
4
6
5
P13B
P100K X2
C24
120PF
R66
47K
R65
33K
R61
22K
C15
470PF
C17
.27
C19
220PF
C21
.1
C25
.047
R68
10K
C23
120PF
R62
22K
R60
10K
R64
3.3K
R63
3.3K
R34
4.7K
R33
4.7K
R43
4.7K
1
3
2
P7A
P100K X2
4
6
5
P7B
P100K X2
C16
120PF
R46
47K
R45
33K
C27
503
C28
503
D4
1N4001
D5
1N4001
R67
*
R47
*
R37
*
R57
*
R28
*
R48
*
R58
*
R38
*
1
2
3
J5
X
L
R JACK M
C31
1000UF 16V
C32
2200U
Vbias
Vbias
Vbias
Vbias
Vbias
Vbias
Vbias
C34
10U
C35
10U
2
3
1
J6
JAPDC
R107
47K
R108
47K
R109
47K
R110
47K
1
2
3
SW2A
DPDT
C39
503
C40
503
C41
503
C42
503
C43
10U
+12V
Q2
M
PSA06
C44
47UF
R111
22K
D6
1N4001
SPECIFIC
AT IONS
Ω (20K balanced)
Output I mpedance:
50Ω
Shelving Slope:
12 dB / Octave
Size:
19" x 4" x 1.75"
Weight:
4 lbs.
SCHEMATI C
