Rolls MX902 User Manual
MX902
Professional Compact Mixer
MIC 1
TRIM
+6
dB
LINE 1
-6 dB
12.5 k
-15 +15
HIGH
60
-15 +15
LOW
+50
MIC 2
TRIM
+6
dB
LINE 2
-6 dB
12.5 k
-15 +15
HIGH
60
-15 +15
LOW
+50
MIC 3
TRIM
+6
dB
LINE 3
-6 dB
12.5 k
-15 +15
HIGH
60
-15 +15
LOW
+50
PHANTOM
PWR
4/LEFT/MONO
-15 +15
-15 +15
AUX 1
SEND
5/RIGHT
12.5 k
HIGH
60
LOW
AUX 2
SEND
6/LEFT/MONO 8/LEFT/MONO
7/RIGHT 9/RIGHT
12.5 k
-15 +15
HIGH
60
-15 +15
LOW
LEFT OUT
12.5 k
-15 +15
HIGH
60
-15 +15
LOW
RIGHT OUT
AUX 1
RET LEFT/MONO
AUX 1
RET RIGHT
CLIP
R
L
R
AUX 2 RET
L
MX902
PWR
12 - 18 VDC
POWER
+
-
0 10
AUX 2
0 10
AUX 1
L R
PAN
-OO +1 5
LEVEL
1
0 10
AUX 2
0 10
AUX 1
L R
PAN
-OO +1 5
LEVEL
2
0 10
AUX 2
AUX 1
L R
PAN
-OO +1 5
LEVEL
3 4/5
0 10
AUX 2
AUX 1
L R
BAL
-OO +1 5
LEVEL
0 10
AUX 2
0 100 100 10
AUX 1
L R
BAL
-OO +1 5
LEVEL
6/7
0 10
AUX 2
0 10
AUX 1
L R
BAL
-OO +1 5
LEVEL
8/9
0 10
AUX 2
RETURN
AUX 1
0 10
RETURN
-OO +15
LEVEL
HDPHN
-OO +1 5
LEVEL
MAIN
HDPHN
OUT
OWNERS MANUAL
Thank you for purchasing the ROLLS MX902 Prof essional Mixer. This unit is designed and manufactured to provide
years of useful service. Please read the following manual carefully .
The MX902 is a compact mixer for small mixing applications . It has an external power supply adding to it's already
quiet and transparent operation. An important feature of the MX902 is it's ability to operate on +12 to +16 Volts DC .
This means that the unit is perfect for mobile sound reinf orcement where a car or camer a battery may be the only
source of power . The MX902 is in a durable steel chassis, and ma y be optionally r ac kmounted.
FEATURES
• Runs on +12 Volts DC - perfect for mobile operation
• 3 XLR Mic Inputs each with trim control
• 9 Total 1/4" unbalanced inputs, RCA Tape Inputs
• +24 Volt Phantom Power
• 2-band EQ
• 2 Auxiliary Sends; 1 pre-fade, 1 post-fade
• 2 Stereo Auxiliary Returns
• Balanced 1/4" Outputs
• Tape Outputs are pre-Master fader
• Tape Inputs share the Aux 1 bus
• Headphone Output w/level control
INSPECTION
1. Unpac k and inspect the MX902 bo x and pac kage .
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 .
TABLE OF CONTENTS
Introduction ................................................................................................................................ 1
Features ................................................................................................................................
Inspection ................................................................................................................................
Front P anel Description ................................................................................................................... 2
Channel Descriptions ...................................................................................................................
The EQ Section...................................................................................................................
The Auxiliary Section .........................................................................................................
Pan/Bal Controls .................................................................................................................
Level Control ...................................................................................................................
Master Section ...................................................................................................................
Auxiliary Return Controls ....................................................................................................
Headphone ...................................................................................................................
Master Level ...................................................................................................................
Jack P anel Description ................................................................................................................... 3
Channel Inputs ...................................................................................................................
Trim Controls ...................................................................................................................
Main Right and Left Outputs ...............................................................................................
Auxiliary Outputs and Inputs ...............................................................................................
Phantom Po wering ..............................................................................................................
Operation ................................................................................................................... 4
Signal Processor Connection ........................................................................................................... 5
Live Example ...................................................................................................................
Schematic ................................................................................................................... 6
Specifications and W arranty ............................................................................................................. Rear Cover
1
Front Panel
CHANNEL DESCRIPTIONS
HIGH: Boosts or cuts the 12.5 kHz or high frequency portion of the signal.
LOW: Boosts or cuts the 60 Hz or low frequency portion of the signal.
AUX 2: Controls the amount of post-fader signal that is sent to the Aux 2 bus
and output.
AUX 1: Controls the amount of pre-fader signal that is sent to the Aux 1 bus
and output.
12.5 k
-15 +15
HIGH
60
-15 +15
LOW
12.5 k
-15 +15
HIGH
60
-15 +15
LOW
PAN: Varies the amount of relative signal sent from Channels’ 1 through 3 to
the Main Level control.
BAL: Varies the amount of stereo signal from channels 5/6 through 8/9 to the
Main Level control.
LEVEL: Controls the overall output signal level of the channel.
MASTER DESCRIPTIONS
AUX 2 RETURN: Controls the amount of input signal from the RCA Aux 2 Return
jacks.
AUX 1 RETURN: Controls the amount of input signal from the Aux 1 Right and Left
Return jacks.
HEADPHONE LEVEL: Controls the amount of level of signal from the Headphone
Output.
HEADPHONE OUTPUT: 1/4” TRS stereo jack for connection to stereo headphones.
NOTE: Do not use a mono 1/4” TS plug in this jack. Doing so may result
in serious damage to the MX902.
MAIN LEVEL: Controls the amount of signal sent to the Right/Left output jacks.
0 10
AUX 2
AUX 1
L R
PAN
-OO +15
LEVEL
3 4/5
0 10
0 100 10
L R
-OO +15
CLIP
L
L
AUX 2 RET
R
MX902
0 10
AUX 2
RETURN
AUX 1
0 10
RETURN
-OO +15
LEVEL
HDPHN
AUX 2
AUX 1
BAL
LEVEL
R
PWR
12 - 18 VDC
POWER
HDPHN
OUT
+
-
-OO +15
LEVEL
MAIN
2
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