Owner's manual

Manual-4
©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5098 TEL [phone] FAX [phone] WEB http://www.rane.com
OPERATING INSTRUCTIONS
MONO MICROPHONE/LINE LEVEL INPUTS 1-4
The microphone pre-amps in the MLM 82a have a
combination gain trim, Level control. The LEVEL control
adjusts both the input dynamic range and mix level. There is
no need for the typical independent gain trim control found
on most mixers. The PHANTOM POWER switch activates
15 volt Phantom Power for all Inputs selected for microphone
use. With LINE selected, Phantom Power is defeated only in
that Input. 15 volts is sufficient power for all but the most
esoteric condenser microphones. If in doubt, check the
manufacturer’s microphone specs.
SIGNAL PRESENT/OVERLOAD INDICATORS
The MLM 82a has four bi-color indicators for Signal
Present/Overload (green/red). Green indication occurs when
there is a signal present above -30 dBu. This lamp should be
glowing green when signal is present. If this lamp is off,
check these possibilities:
A. The Input may not be connected.
B. There is little or no signal present at the moment.
C. There is a Mic connected to a channel switched to LINE.
D. The Mic needs Phantom Power (See Rear Panel, ).
E. The LEVEL control needs to be increased (clockwise).
F. The cable is not wired properly (See the Sound System
Interconnection RaneNote).
A red glowing LED indicates that the levels are so high that
distortion due to clipping is occurring or imminent.
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 over-
load indicators. Because 12 dB of gain is added after the
STEREO LINE INPUT LEVEL controls, it is possible to
overload a line input without an overload indication. The A
and B OUTPUT OL indicators can overload from the Line
Inputs if the OUTPUT LEVEL controls are set to 10. Al-
though a single Input may be at unity gain, multiple active
Inputs mixed together can cause an overload. If the OL
indicators illuminate, just turn down the OUTPUT LEVELS
until the overload stops—mix ratios will not change.
STEREO LINE LEVEL INPUTS 5-8
The STEREO LINE INPUT LEVEL controls adjust both
A and B Inputs equally. Use the OUTPUT LEVEL controls
together for overall output adjustment, or separately to
control balance.
A single mono input may be used for the A and/or B
inputs. Any mono source connected to A will go to the A
output. Any mono source connected to the B input will go to
the B output. If you wish one or two mono sources to go to
both A and B outputs, press the MONO switch. If you wish to
mono a single stereo source and have it present in A and B
outputs, press the mono switch. STEREO LINE INPUTS 5-8
may each be independently set for mono operation.
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