MACKIE LM-3204 - Manual (Page 11)

11
Quick recap: In the up position, the Tape
Monitor switch selects the main Left and
Right bus outputs for the monitor circuits and
the meters. In the down position, the Tape
Monitor switch selects the Tape Inputs for the
monitor circuits and the meters.
MICROPHONE PREAMPLIFIERS
Another Mackie bonus feature! How did
this come about? Was there just too much
blank space on the back panel? Did some-
body say, “Well, what if you have a
microphone?” We’ll never know. But the
happy fact is, in addition to all the fabulous
stereo line input features you could possibly
want, there are two high-performance
Mackie microphone preamplifiers hidden
away on the rear panel, just in case you need
them.
The mic preamps each have a standard
XLR-3 input connector, a trim control, and
switchable phantom powering. However, they
don’t go anywhere (non-normalled). That’s up
to you.
To use a mic preamp, simply patch one of
the (unbalanced 1 ⁄ 4 ") Mic Out jacks into any
one of the line input jacks of the mixer. Patch
’em in mono, patch ’em in stereo, patch ’em
anywhere your cord will reach.
NOTE: While dynamic
mics ignore phantom
power, ribbon mics don’t.
Make sure that the Phan-
tom Power switch is off
before plugging in a ribbon mic. Wouldn’t
want to barbecue your Beyer
® …
The Long Arm Exercise revisited
The mic Trim knob will add from +10dB
to +50dB of sensitivity to an LM-3204 input.
For proper level setting, put all the controls
in your signal path at the “U” detent and
solo the input module you are using for a
mic input. Then, while someone is making
appropriate noises in front of the micro-
phone, adjust the mic trim so that the peak
levels read about 0dB on the meters.
If you are using condenser microphones,
don’t forget to engage the Phantom Power
switch, located between the two mic trim knobs.
LAYOUT
AND
FUNCTION