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Manual-

MLM 82a

MIC/LINE MIXER

OPERATORS MANUAL

MLM 82a CONNECTION

When connecting the MLM 82a to other components in 

your system for the first time, leave the power supply for last. 

This gives you a chance to make mistakes and correct them with-

out damage to your fragile speakers, ears and nerves.

MIC/LINE INPUTS 1-4

The four XLR jacks provided on the MLM 82a are balanced 

MIC/LINE inputs. They will also accept unbalanced connec-

tors. Use only shielded cable for inputs. For best noise rejection 

use two-conductor-plus-shielded wire, even for unbalanced 

operation. Connect the shield at both ends to help insure proper 

grounding. See the Sound System Interconnection RaneNote 

included with this manual for all cable adaptations. Rane follows 

the AES recommended practice of pin 2 positive, pin 3 negative, 

and pin 1 to shield. Switch any input connected to a microphone 

to the MIC position (

out

) using the associated switches on the 

rear panel. When connecting line level signals, switch the input 

to the LINE position (in). A single phantom power switch is 

provided for the four MIC inputs. 

If LINE is selected, Phantom 

Power is disabled for that input.

QUICK START

This section is provided as a convenience for those in a rush. If you are experienced with this unit or other Rane products, these 

few words will refresh your memory.

INPUTS 1 

through 

may be microphone or line level. The choice between the two is made by setting the 

LINE 

push buttons 

on the REAR of the unit next to the 

MIC/LINE INPUT JACKS

. Each microphone input may be assigned to 

A

B

 or 

A+B

 outputs 

using the front panel 

ASSIGN 

switches.

INPUTS 5

 through 

8

 are stereo line inputs which may be set to mono using the recessed 

MONO

 switches located on the front 

panel.

Internal switches allow setting output signal levels for 

MIC 

or 

LINE.

 The factory default setting is 

LINE

. If the MLM 82a is 

connected directly to a power amplifier, equalizer or recorder input, choose 

LINE 

level. If the MLM 82a is connected to a micro-

phone jack of an existing sound system, choose 

MIC 

level. 

Once Inputs, Outputs, and power are properly connected, with the 

OUTPUT LEVELS 

counterclockwise (

off

), set the Input 

LEVELS 

as high as possible without causing the 

SIG/OL 

indicators to blink red except during extreme signal peaks. Now slowly 

raise the 

OUTPUT LEVELS 

as desired.

Never connect anything except an approved Rane power supply to the red thing that looks like a telephone jack on the rear 

of the MLM 82a. 

This is an AC input and requires special attention if you do not have a power supply 

exactly 

like the one that was 

originally packed with your unit. See the full explanation of the power supply requirements on page Manual-3.

STEREO LINE INPUTS 5-8

The ¼" connectors are line-level balanced/unbalanced 

Inputs. If the MLM 82a is to be used with unbalanced sources, 

consult the Sound System Interconnection RaneNote included 

with this manual for proper wiring. Stereo Inputs use both A 

and B jacks at each INPUT. INPUTS 5 through 8 also serve as 

mono Inputs when the front panel MONO switch is engaged. 

OUTPUTS

The MLM 82a’s OUTPUTS are balanced. The same wiring 

conventions as the XLR Inputs apply. The type of device follow-

ing the MLM 82a must be considered when setting the internal 

Output Level switch. Choose between LINE (0 dB) or MIC 

(-40 dB) output, the factory setting is LINE. If the MLM 82a 

is connected directly to a power amplifier input, choose LINE 

level. If the MLM 

82a is connected to a 

microphone jack on an 

existing sound system, 

choose MIC level. For 

unbalanced OUTPUT 

connections 

do not

 

tie pin 3 (i.e. “–”) to 

ground.

WEAR PARTS:

 This product contains no wear parts.

MIC/LINE MIXER

10

0

2

4

8

6

10

0

2

4

8

6

10

0

2

4

8

6

10

0

2

4

8

6

10

0

2

4

8

6

10

0

2

4

8

6

10

0

2

4

8

6

10

0

2

4

8

6

10

0

2

4

8

6

10

0

2

4

8

6

MLM 82a

POWER

OUTPUTS

1

MONO MIC/LINE INPUTS

2

3

4

7

5

6

STEREO LINE INPUTS

8

LEVEL

LEVEL

LEVEL

LEVEL

OL

OL

OL

LEVEL

A+B

ASSIGN

A

B

A+B

ASSIGN

A

B

A+B

ASSIGN

A

B

A+B

ASSIGN

A

B

LEVEL

LEVEL

MONO

MONO

SIG

OL

SIG

OL

SIG

OL

SIG

MONO

MONO

LEVEL

LEVEL

LEVEL

B

A

OUTPUTS

A

AC IN

B

Summary of Contents for MLM 82A

Page 1: ...input choose LINE level If the MLM 82a is connected to a micro phone jack of an existing sound system choose MIC level Once Inputs Outputs and power are properly connected with the OUTPUT LEVELS counterclockwise off set the Input LEVELS as high as possible without causing the SIG OL indicators to blink red except during extreme signal peaks Now slowly raise the OUTPUT LEVELS as desired Never conne...

Page 2: ...Inputs for that channel have exactly the same level 6 OUTPUT OverLoad LED illuminates within 3 dB of an approaching overload condition To avoid this the associated OUT PUT LEVEL control may be decreased or the problem causing individual Input Level may be lowered 7 A and B OUTPUT LEVEL controls set the Output Level for A and B outputs 8 POWER LED is lit whenever adequate power is applied to the un...

Page 3: ...placement 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 ea...

Page 4: ...nent Check these conditions A The LEVEL control may be turned too high B The Output of the preceding device may need to be reduced C The Input may be switched to MIC with a line level source Switch the Input to LINE STEREO LINE INPUTS 5 through 8 do not have overload indicators Because 12 dB of gain is added after the STEREO LINE INPUT LEVEL controls it is possible to overload a line input without...

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