Manual- rear panel description – Rane MLM 82a 2003 version User Manual
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Manual-
REAR PANEL DESCRIPTION
1
MIC/LINE INPUTS 1 through 4.
These XLRs connect either balanced Microphone or Line signals, depending on the LINE
switch setting (see 3). Rane adheres to the international and U.S. standard for balanced pin configurations: Pin 1 is chassis
ground (neutral), pin 2 is positive (+), and pin 3 is negative (–).
2
PHANTOM POWER switch
applies 15 V Phantom Power to any Inputs 1-4 that are set for MIC Input.
3
LINE Input selectors
switch the sensitivity and input impedance for either a microphone or line level input. If LINE is chosen,
Phantom Power is deactivated for that Input.
4
¼" LINE INPUTS.
These stereo pairs of balanced inputs accommodate stereo line-level signals. These TRS (Tip-Ring-Sleeve) ¼"
jacks handle either balanced or unbalanced signals. In most cases an unbalanced signal may use a mono ¼" plug (Tip-Sleeve). See
the Sound System Interconnection RaneNote included with this manual for proper connection.
5
A and B OUTPUT jacks.
These balanced XLR’s provide the A and B mixed output. INTERNAL OUTPUT LEVEL switches
allow setting the output level for MIC or LINE level. Pin connections are the same as above in 1.
6
POWER supply input.
This is not a telephone jack. The MLM 82a is supplied from the factory with an RS 1 remote power supply
suitable for connection to this input jack. The power requirements call for an 18 volt AC center-tapped transformer only. Call the
Rane factory for RS 1 replacement or substitution.
7
Chassis ground point.
A #6-32 screw is provided for chassis grounding purposes. See the note below for details.
CHASSIS GROUNDING
The MLM 82a is supplied with an external power supply (the RS 1). This power supply does not ground the unit. On the rear
chassis a #6-32 screw is provided to allow for attachment of the grounding wire. This chassis ground point must be connected to
earth ground either through another product which utilizes a three-prong grounded AC power cord or by attaching the wire to a
known earth ground, (the screw on a grounded AC outlet.)
If after hooking up your system it exhibits excessive hum or buzzing, there is an incompatibility in the grounding configuration
between units somewhere. Your mission, should you accept it, is to discover how your particular system wants to be grounded. Here
are some things to try:
1. Try combinations of lifting grounds on units that are supplied with ground lift switches or links.
2. If your equipment is in a rack, verify that all chassis are tied to a good earth ground, either through the line cord grounding pin or
the rack screws to another grounded chassis.
3. Try moving the device away from high magnetic field sources, such as large transformers used in power amplifiers.
Please refer to the RaneNote “Sound System Interconection” for further information on system grounding.
CLASS 2 EQUIPMENT
BALANCED OR UNBALANCED
B
A
B
A
B
A
B
LINE
RANE CORP.
MADE IN U.S.A.
A
LINE
LINE
POWER
LINE
PHANTOM
600mA
POWER
MLM 82a
5
A
B
OUTPUTS
7
8
6
1
3
4
2
LINE INPUTS
ACN 001 345 482
MIC/LINE INPUTS
BALANCED:
PIN 3 = (–)
PIN 2 = (+)
PIN 1 = (G)
6
7
3
2
5
4
1