Rolls MixMax RM81 - Manual (Page 2)

INTRODUCTION
Thank your for your purchase of the Rolls RM81 MIXMAX eight channel audio
mixer. The RM81 is a microphone and line mixer in a single 19” rack space. It is
intended for sound reinforcement or studio applications where several micro-
phones or line sources need to be combined to a single output. Please review this
manual for proper operation.
FEATURES:
• 8 XLR Mic inputs
• Individual phantom power switches for each channel
• 8 1/4” unbalanced line inputs which may be internally jumpered to be line
outputs.
• Wide-range tone controls for each channel
• RCA Aux/Bus input and pre-master output for cascading units or recording
INSPECTION
1. Unpack and inspect the RM81 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.
2. Please complete the Warranty Registration Card and return it to the factory.
DESCRIPTION
FRONT PANEL
LEVEL
TONE
bass 0 10 0 10 0 10 0 10 0 10 treble LEVEL
TONE
bass treble LEVEL
TONE
bass treble LEVEL
TONE
bass treble LEVEL
TONE
bass treble LEVEL
TONE
bass treble LEVEL
TONE
bass treble LEVEL
TONE
LEVEL bass treble LEVEL PWR
MIC/LINE
MIXER
RM81
1 2 3 4 5 6 7 8
0 10 0 10 0 10 0 10
Each channel has an input VOLUME control to adjust the input level to that
channel, a TONE control which cuts the signal up to 15 dB, below 200 Hz or
above 6 kHz.
The MASTER VOLUME control adjusts the overall output level.
REAR PANEL
CHANNEL 1
AUX BUSS IN PREFADE OUT MAIN OUT
MODEL RM81
120 VAC 50/60 Hz 15 VA
SERIAL NUMBER
81-
MADE IN U.S.A.
PHANTOM POWER
8 7 6 5 4 3 2 1
WARNING: DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
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
CHANNEL 2 CHANNEL 3 CHANNEL 4 CHANNEL 5 CHANNEL 6 CHANNEL 7 CHANNEL 8
NRTL /C
Aux/Bus Input: RCA jack which connects directly to the RM81 mix bus. The jack
may be connected to another RM81 Pre-Fade Output - making this unit the
“Master”.
Pre-Fade Output: RCA jack for connection to another RM81 Aux/Bus Input,
making this unit the “Slave”.
Main Output: 1/4” TRS balanced jack containing the RM81 overall output signal.
Phantom Power Switches: 8 individual DIP switches for applying 12 Volts of
phantom power to the indicated channel. The phantom power is for powering
condenser microphones.
Channel Inputs 1 - 8: 1/4” TS unbalanced, or XLR balanced input jacks.
C H 6
C H 7
M A S TE
R
+12V
-1 2V
-1 2V
-1 2V
-1 2V -1 2V
+12V
+12V -1 2V
-1 2V -1 2V
-1 2V
-1 2V -1 2V
-1 2V
+12V
+12V
+12V
+12V
+12V
+12V
+12V +12V
+12V
+12V
+12V
+12V
+12V +12V
+12V +12V
+12V
+12V
-1 2V
-1 2V
C H 8
A U X /B U S IN
P R E F A D E O
U T
R 10
7 10
0
R 11
2
10
K
R 21
2
10
K R 31
2
10
K
R 41
2
10
K
R 50
7
10 0
R 51
2
10
K
R 61
2
R 71
2
R 81
2
J9 P H O N E 1 /4
J1
1
P H O N E 1 /4
J1
2
P H O N E 1 /4
J1
3
P H O N E 1 /4
J1
4
P H O N E 1 /4
J1
5
P H O N E 1 /4
J1 6 P H O N E 1 /4
J1 8 P H O N E 1 /4
J1 7 P H O N E 1 /4
R 1 10 K
R 2 10
0
R 3 10 K
R 4 10
0
R 6
C R 1
1N
40
01
C R 2
1N
40 01
C R 3
1N
40 01
C R 4
1N
40 01
C 5 1U
F
C 10
3
10 U C 20
3
10 U
C 10
1
47
U
C 10
2
47
U C 20
1
47
U
C 20
2
47
U C 30
1
47
U
C 30
2
47
U
C 40 3
10 U
C 40
1
47
U
C 40
2
47
U C 50
3
10
U
C 50 1
47
U
C 50
2
47
U
C 60
3
10
U
C 60
1
47 U
C 60
2
47
U
C 70
3
10
U
C 70
1
47 U
C 70
2
47
U
C 80
3
10
U
C 80
1
47 U
C 80
2
47
U
C 2 1U
C 1 12
0P
F
1
16
S W
1A
D IP
S W -8
C 50
5 1
20
P F
C 50
4
12
0P
F C 40
4
12
0P
F
C 30
4
12
0P
F
C 20
4
12
0P
F
C 10
4
12
0P
F
C 60
4
12
0P
F
C 80
4
12
0P
F
C 70
4
12
0P
F
P 1 P 10
0K
J2
0
R C A P C
1
2
3
J1 X LR
F P C
1
2
3
J2 X LR
F P C
1
2
3
J3 X LR
F P C
1
2
3
J4 X LR
F P C
1
2
3
J5 X LR
F P C
1
2
3 J6 X LR
F P C
1
2
3 J7 X LR
F P C
1
2
3 J8 X LR
F P C
P 16
P 10
0K
P 17 P 10 0K
R 11
4
4. 7K
P 15 P 10
0K
R 81
4
4. 7K
R 21
4
4. 7K
P 3 P 10
0K P 5 P 10 0K
R 31
4
4. 7K
P 7 P 10 0K
R 41
4
4. 7K
P 9 P 10
0K
R 51
4
4. 7K
R 61
4
4. 7K
P 11 P 10
0K
R 71
4
4. 7K
P 13 P 10
0K
C 80 6
25
P F
C 70 7
25
P F
C 60 6
25
P F
C 30
5
12
0P
F
C 20
5
12 0P
F
C 10
6
25
P F
C 20
6
25
P F C 30
6
25
P F
C 50
6
25
P F C 40
6
25
P F
C 60
5
12
0P
F
C 70
5
12
0P
F
C 80
5
12
0P
F
3 C
2 B
1 A
3 C
2 B
1 A
3 C
2 B
1 A
3 C
2 B
1 A
3 C
2 B
1 A
3 C
2 B
1 A
3 C
2 B
1 A
3 C
2 B
1 A
R 50 6
47
K
C 40
5
12
0P
F
4
13
S W 1D
D IP S W -8
R 40
7
10
0
5
12
S W 1E
D IP S W -8
C 10
5
12
0P
F
2
15
S W 1B
D IP S W -8
R 20
7
10
0
3
14
S W 1C
D IP S W -8
R 30
7
10
0
C 30 3
10
U
R 60
7
10
0 7
10
S W
1G
D IP S W
-8
R 70
7
10
0
R 80
7
10
0 8
9
S W 1H
D IP S W -8
J1
9 R C A P C
R 5 10
0
I
1
G 2 O
3
U 14 78
12
I
2
G 1 O
3
U 15 79
12
S W 2
S W S
P S T
P L1
P LU
G A C M
A LE
R 10
3 33 2
R 10 4 33 2
R 10
5
49
.9 K
R 10
8
49
.9 K
C 10
7
.1 U F
R 11
0
4. 7K
P 2
P 10
0K
C 10
8
.0 1
R 10 9
4. 7K
P 4
P 10
0K
C 20 8
.0 1
R 21
0
4. 7K
R 20
9
4. 7K
C 20 7
.1 U F
2 3
1
4 U 13
A 45 60
T1
M C I 4 07
4 02
4
6 5
7
8 U 2B
45 60
2 3
1
4 U 2A
45
60
6 5
7
8 U 5B
45
60
6 5
7
8 U 3B
45
60
2 3
1
4 U 3A 45 60
6 5
7
8 U 6B 45
60
6 5
7
8 U 9B
45 60
6 5
7
8 U 8B
45 60
5 6
7
8 U 7B
45
60
3 2
1
4 U 4A
45
60
2 3
1
4 U 5A
45
60
2 3
1
4 U 6A
45
60
5 6
7
8 U 4B
45
60
3 2
1
4 U 1A
45
60
5 6
7
8 U 10
B 45
60
6 5
7
8 U 11
B 45 60
6 5
7
8 U 12
B 45
60
2 3
1
4 U 12 A 45 60
2 3
1
4 U 11
A 45 60
3 2
1
4 U 10
A 45
60
3 2
1
4 U 7A
45
60
2 3
1
4 U 8A
45
60
2 3
1
4 U 9A
45 60
C 6
10
U F
5 6
7
8 U 1B
45
60
6 5
7
8 U 13 B 45
60
C R 5
LD
S R
C 7 50
3
R 10
1
4. 99
K
R 10
2
4. 99
K
R 20
1
4. 99
K
R 20
2
4. 99
K
R 30
1
4. 99
K
R 30
2
4. 99
K
R 40
1
4. 99
K
R 40
2
4. 99
K
R 50
1
4. 99
K
R 50
2
4. 99
K
R 80
1
4. 99
K
R 80
2
4. 99
K
R 60
1
4. 99
K
R 60
2
4. 99
K
R 20
3 33 2
R 20 4 33 2
R 30
3 33 2
R 30 4 33 2
R 40
3 33 2
R 40 4 33 2
R 50
3 33 2
R 50
4
33
2
R 60
3 33 2
R 60
4
33
2
R 70
3 33 2
R 70
4
33
2
R 80
3 33 2
R 80
4
33
2
R 20
5
49
.9 K
R 20
8
49
.9 K
R 30
5
49
.9 K
R 30 8
49
.9 K
R 40
5
49
.9 K
R 40
8
49
.9 K
R 50
5
49
.9 K
R 50
8
49 .9 K
R 80
5
49
.9 K
R 80
8
49
.9 K
R 70
8
49 .9 K
R 60
5
49
.9 K
R 60
8
49 .9 K
R 10
6
18
K
R 20
6
18
K
R 40
6
18 K
R 30
6
18 K
R 60
6
18
K
R 70
6
18
K
R 80
6
18
K
R 61 3
10
0
R 71
3
10
0
R 81
3
10
0
R 51 3 10
0
R 41
31 00
R 31
3
10
0
R 21 3
10
0
R 11 3
10
0
R 70 1
4. 99
K
R 70
2
4. 99
K
R 70
5
49
.9 K
C 13
10
00 U F 16
V
C 14 10 00
U F 16
V
1
ROLL
S CORPORATI
O N
59
68
S
o u th 35
0 We
st
Sa
lt L
a ke
C
ity
, U
tah
84
10
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1
18-Jun-1999
Tit
le
Size: Da
te :
Re
v: of
Rc
R O LL
S M
IX M
A X 8 R
M 81
D
+12V
1
16
S W 1A
D IP S W -8
C 30
7
.1 U F
R 31
0
4. 7K
P 6
P 10
0K
C 30
8
.0 1
R 30
9
4. 7K
C 40
7
.1 U F
R 41
0
4. 7K
P 8
P 10
0K
C 40
8
.0 1
R 40
9
4. 7K
C 50
7 .1 U F
R 51
0
4. 7K
P 10
P 10
0K
C 50
8
.0 1
R 50 9
4. 7K
C 60 7
.1 U F
R 61
0
4. 7K
P 12
P 10
0K
C 60
8
.0 1
R 60
9
4. 7K
C 70 7
.1 U F
R 71
0
4. 7K
P 14
P 10
0K
C 70
8
.0 1
R 70
9
4. 7K
C 80 7
.1 U F
R 81
0
4. 7K
C 80
8
.0 1
R 80
9
4. 7K
10
K 10
K
10
K
Do
cu
men
t Nu
mbe
r:
RM8
1 .S
CH
Sheet:
4. 7K
P O W E R
CONFIGURING THE 1/4” INPUT JACKS AS DIRECT OUTS
The eight 1/4” jacks come from the factory as line inputs and are electrically
mixed with the XLR jacks. They may be used together if desired. To configure a
channel’s 1/4” jack as a Direct Out, first remove the RM81 lid. For each channel
there is a three-pin header with a shorting jumper on two pins. The setting is on
“IN”. By moving the shorting jumper to the other side labeled “OUT”, the jack then
becomes a Direct Output.
SCHEMATIC