Galaxy Audio RM Series User manual

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www.galaxyaudio.com/RM10.php

CONTENTS
Introduction.............................................................
The RM10...............................................................
Uses.......................................................................
Input Channels.......................................................
Phantom Power......................................................
Volume Controls.....................................................
Output Section........................................................
Auxiliary Buss Section............................................
Tone Control...........................................................
Led Indicators.........................................................
Specifications.........................................................
Phoenix Block Inputs..............................................
Frequency Response.............................................
Warranty.................................................................
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2&3
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5
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10

1
INTRODUCTION
Thank you for purchasing the Galaxy Audio RM10 Rack
Mount Mixer. For updates on all of our products and owners
manuals please visit www.galaxyaudio.com. The RM10 is a
space-saving multi-purpose rack mountable Mic/Line mixer.
Designed to solve many of the patching and mixing problems
that arise when connecting various audio devices together. The
19" 1RU mixer features a variety of input and output connectors
to accommodate most pro and consumer audio situations.

2RM10
Some of the uses of the RM10 Rack Mount Mixer include:
1.) Main mixer for small House of Worship, educational
classroom and athletic facilities
2.) Adding inputs to an existing mixer by creating a sub-mix
of two or more sources before sending the signals to the
main mixer or powered speaker
3.) Serve as the main mixer for solo or duo acts as well as
AV presentations
4.) Microphone level output allows for connection to any
microphone input of an existing system.
RM10-Rack Chassis

3
RM10
Using the RM10:
The following illustration shows just some of the many ways the
RM10 may be connected with other audio devices. For best
performance, always use high quality shielded cables of the
correct type. Switch the power on and turn all Volume Controls
to minimum before connecting other audio devices to the RM10.
Input Channels:
Input Channels are labeled 1 through 10 and are located on the
back of the unit. Inputs 1 through 8 are Balanced 3 Pin Phoenix
Block connectors. Channel 9 though 10 accepts Stereo RCA
Jacks. Channel 10 also has an additional 1/8" Stereo Summing
Input Jack located on the front of the unit next to the Channel 10
Volume control.
*iPod is a registered trademark of the Apple Company Inc.

4RM10
Phantom Power:
Two Phantom Power Switches control the 48Vdc Phantom
Power on Channels 1 through 8. Phantom Power Switch one
controls Phantom Power for Channels 1 through 4 and Phantom
Power Switch two controls Phantom Power for Channels 5
through 8. Phantom Power is supplied to the Phoenix Block
connectors when the Phantom Power switch is in the “In
Position”. If Phantom Power is not required the Phantom Power
Switch should be in the “Out Position”.
Volume Controls:
Volume controls, which correspond to channels 1 though 10 are
located on the front of the RM10. Channels 1 through 8 also
feature Pad Switches located on the back of the unit below each
channels input jack. Pad switches will reduce the gain by –20dB
to accommodate very strong input signals. The Pads are
engaged when the switches are in the in position. Optimum
performance is obtained when the when the Volume Controls
can be set generally in the middle of their range rather than at
the extreme MIN or MAX.
Output Section:
Various Output jacks are located on the back of the unit. The
mix created with the 10 input Volume controls will appear at all
Output jacks. A balanced microphone level output is present at
the Phoenix Block labeled “Mic Out” and a balanced line level
output is present at the Phoenix Block & ¼" jack labeled “Line
Out”.

Auxiliary Buss Section:
A ¼" TRS stacking jack is located on the back of the unit
between the Channel 10 Stereo RCA jack and ¼" Line Level
Output jack for linking multiple units together. When two RM10's
are bussed together the output of both units will be identical with
the exception of master level and tone controls which are
independent in each mixer. This can be useful for auxiliary feeds
to recordings, or overflow systems etc.
Tone Control Section:
Two shelving tone controls are provided in the main output
section. The Low control provides 12dB of boost or cut at
200Hz, the Hi control provides 12dB of boost or cut at 10kHz.
LED Indicators:
Green LED indicators for Input Signal Presence are located next
to each channel. When signal is detected the LED will illuminate
Green. A 10 Segment VU meter is located above the Master,
Low and High Tone Controls. The VU meter displays the Output
level from –21dB to +6dB in 3 dB steps.
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RM10

6RM-10
Specifications:
Channels 1 through 8
Electrical:
Differential balanced or unbalanced
Input Impedance:
18k ohms Differential
9k ohms Unbalanced
Max Input:
2.25V RMS (+7 dBV, +9 dBu) with Pad
Minimum Input:
3mV RMS (-50 dBV, -48 dBu)
Nominal Input:
30mV RMS (-30 dBV, -28 dBu)
Phantom Power:
+48V DC
Channel 9 & 10
Input Impedance:
RCA: 10k ohms
1/8" Stereo Unbalanced : 10k ohms
Max Input:
2.25V RMS (+7 dBV, +9 dBu) with Pad
Minimum Input:
3 mV RMS (-50 dBV, -48 dBu)
Nomimal Input:
30 mV RMS (-30 dBV, -28 dBu)

7
RM-10
Phoenix Block Inputs/Outputs
Two Band EQ:
LOW: +/- 12dB @ 200 Hz
HIGH: +/ - 12dB @ 10kHz
10 Segment VU Meter:
-21dB, -18dB, -15dB, -12dB, -9dB, -6dB, -3dB, 0dB,
+3dB, +6dB
Distortion:
THD 0.05% (22Hz-22kHz @ Nominal Volume)
Noise:
S/N >100dB
Power Requirements:
12V dc at 1.3A, supplied by external power supply
Frequency Response:
20Hz-20kHz +/-3dB
Weight:
4.95 lbs (2.24kg)
Dimensions:
19" L x 1.75" H x 6.25" D
(482.6mm x 44.45mm x 158.75mm)
Pin 1: Ground
Pin 2: +
Pin 3: -

8RM-10
Tone Controls Flat
Low Boost 12dB
Low Cut 12dB
High Boost 12dB
High Cut 12dB

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RM-10
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Printed in China V004172013
1-800-369-7768 www.galaxyaudio.com
© Copyright Galaxy Audio 2012
WARRANTY Information can be viewed online at
http://www.galaxyaudio.com/warranty.php
THREE YEAR LIMITED WARRANTY
Specifications in this manual are subject to change without notice.
For the most up to date manual and information
visit www.galaxyaudio.com.