INTRODUCTION
Thank your for your purchase of the Rolls RM203 Stereo Line Mixer. The RM203
is a line-level mixer featuring ten channels of stereo inputs, a Tape input and
output, and a mono auxiliary send and stereo return. Each channel has a signal
level control, a right/left balance control, an auxiliary level control, and a clip LED.
INSPECTION
1. Unpack and inspect the RM203 box and package.
Your RM203 was carefully packed at the factory in a protective carton. Nonethe-
less, be sure to examine the unit and the carton for any signs of damage that may
have occurred during shipping. 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.
2. Please complete the Warranty Registration Card and return it to the factory.
FEATURES
• 10 Stereo Inputs
• RCA Tape Inputs and Outputs
• Balanced 1/4” TRS Outputs
• Mono Auxiliary Send - Stereo Returns
• Clip Indication of each channel
• Balance control on each channel
• Headphone / Auxiliary Output
• External Power Supply included for quieter operation
TABLE OF CONTENTS
Introduction
1
Inspection
1
Features
1
Table of Contents
1
Description
Front Panel
2
Rear Panel
2
Connection/Operation
3 - 4
Specifications
5
Schematic
6
Warranty
Back cover
SCHEMATIC
1
ROLLS CORPORATION
5143 South Main Street
Salt Lake City, UT 84107
1
26-Mar-2000
Title
Size:
Document Number: RM203
Date:
Rev:
Sheet
o
f
Rb
KEYBOARD MIXER RM203
D
VCC
AUX
BAL
CHANNEL 1 OF 10
REC IN
REC IN
VCC
AUX RETURN
AUX SEND
OVLOAD
OVLOAD
MONO/RIGHT
LEFT
VCC
VCC
VCC
VCC
VCC
VEE
VEE
VEE
VEE
VEE
VCC
VEE
VCC
AUX
BAL
OVLOAD
MONO/RIGHT
LEFT
VCC
VEE
POWER
VCC
VEE
R8
100K
R14
100
R15
100K
J2
PHONE 1/4
R109
4.7K
R101
10K
R110
10K
C103
1U
R112
10K
C101
1U
R102
2K
C102
120PF
R103
47K
R104
100K
R105
100K
R106
10K
R107
4.7K
R113
47K
C104
120PF
R108
4.7K
R115
4.7K
R114
10K
R116
4.7K
C1
1U
C2
10U
C3
1U
C4
10U
C9
1U
6
5
7
8
U1B
4560
2
3
1
4
U1A
4560
2
3
1
4
U2A
4560
6
5
7
8
U3B
4560
3
2
1
4
U3A
4560
6
5
7
8
U4B
4560
3
2
1
4
U4A
4560
6
5
7
8
U5B
4560
2
3
1
4
U5A
4560
R20
100
R21
10K
R22
1K
C8
120PF
C7
120PF
R18
10K
R19
10K
C6
120PF
C5
120PF
R16
10K
R17
10K
R1
100
R2
10K
R3
1K
R5
10K
R10
10K
R12
1K
R11
100K
R9
100
6
5
7
8
U2B
4560
R7
100
R13
51
R6
51
R23
4.7K
Q101
2N3904
D101
LDRR
D1
LDRR
R202
2K
C202
120PF
R203
47K
R204
100K
R205
100K
R206
10K
Q201
2N3904
R207
4.7K
D201
LDRR
R209
4.7K
R208
4.7K
R213
47K
R215
4.7K
R214
10K
R211
2K
R212
10K
R201
10K
R210
10K
C204
120PF
C203
1U
C201
1U
J3
PHONE 1/4
J4
PHONE 1/4
1
3
J21A
RCAX4
2
7
J21B
RCAX4
5
8
J21D
RCAX4
J22
PHONE 1/4
J23
PHONE 1/4
J24
PHONE 1/4
4
6
J21C
RCAX4
J25
PHONE 1/4
J26
PHONE 1/4
J27
PHONE 1/4
4
6
5
P1B
P100K X2
P2
P100K
P3
P100K
4
6
5
P4B
P100K X2
1
3
2
P4A
P100K X2
P5
P100K
P6
P100K
1
3
2
P33A
P100K X2
4
6
5
P33B
P100K X2
1
3
2
P34A
P100K X2
4
6
5
P34B
P100K X2
Q1
2N3904
D2
1N4001
2
3
1
J28
JAPDC
D4
LDSG
R30
10K
R27
10K
R29
10K
R28
10K
R111
2K
1
3
2
P1A
P100K X2
J1
PHONE 1/4
2
3
1
4
U101A
4560
6
5
7
8
U101B
4560
6
5
7
8
U201B
4560
2
3
1
4
U201A
4560
C12
1UF
C13
10U
C14
503
R217
1
0
K
R216
4.7K
R117
1
0
K
4
6
5
P31B
P100K X2
1
3
2
P31A
P100K X2
R4
100K
I
1
G
2
O
3
U6
7812
I
2
G
1
O
3
U7
7912
R24
4.7K
D3
1N4001
C10
1000UF 16V
C11
1000UF 16V
REC OUT
REC OUT
1
6
