Mackie 406M, Owner'S Manual

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not hurt most dynamic mics. Check the micro-
phone’s user manual if you’re not sure.
Caution: Turn all output
levels down before operat-
ing this switch to avoid the
possibility of a “pop” in
your speakers.
Connecting a line-level input to an XLR in-
put connector with the phantom power
switched on could damage the output of the
source device. We recommend using the 1/4"
jacks for line-level inputs.
PHANTOM
POWER CH 1-8
BREAK
(MUTES CH 1-6)
BREAK Switch
As in “take a break.” Push this switch in dur-
ing your breaks and the mono channels (1-6),
monitor send, and effects send are muted so you
don’t run the danger of something going haywire
during your break, like having your system start
feeding back or having some would-be poet jump
up on stage and start reciting his latest epic.
This switch doesn’t affect the
TAPE IN
or
the stereo channels (7&8) so you can go ahead
and run your cassette or CD player while you
are on break.
POWER AMP ROUTING
This handy switch provides the flexibility to
use the internal power amplifiers to power
both the main and monitor outputs, or to
power two main speakers with the internal
amplifiers and use a separate power amplifier
to power the monitor speakers.
When the switch is in the OUT position, the
main mix is routed to the inputs of both
amplifiers. For the mono versions (406M,
408M, 808M), the same signal is routed to the
inputs of both amplifiers. You must have another
amplifier to power your monitor speakers.
When the switch is pushed IN, the main mix
is routed to the input of the
MAIN
power amp,
and the monitor mix is routed to the input of
the
MONITOR
power amp. You can still con-
nect up to two speakers to each amplifier
output, since there are two parallel
SPEAKER
OUTPUT
jacks for each amplifier on the back
panel. Just remember to maintain a 2 ohm
load or greater for each amplifier.
Note: On the stereo versions (408S, 808S),
the left and right signals are summed together
just prior to the
MAIN
power amp input when
the
POWER AMP ROUTING
switch is pushed in.
COMPRESSOR
Pushing this switch in activates a circuit at
the input to the power amplifiers that senses
the signal level and reduces the possibility of
driving the amplifier into clipping. Clipping
creates distortion that not only sounds bad, but
can actually damage your loudspeakers. We
recommend that you leave this switch pushed
in (unless you hate your speakers).
TAPE IN LEVEL
You can connect a tape deck or CD player
to the PPM Series and play back prerecorded
music during your breaks. The tape signal is
added to the main signal path just after the
RUMBLE REDUCTION
switch and just prior to
the
MAIN MASTER
control. This is a stereo
control, but for the mono versions (406M, 408M,
808M), the left and right inputs are summed.
EFX FOOT
SWITCH
RIGHT RETURN LEFT RETURN
SEND
L MIXER OUT R MIXER OUT COMPRESSOR
L POWER
AMP IN
R POWER
AMP IN
EFFECTS
(OVERRIDES INTERNAL EFX) MONITOR
MAINS
TAPE IN
TAPE OUT
LEVEL
+15
U
O O
LINE
L R
R
L
OUT
408S
POWER AMP ROUTING
IN
OUT
STEREO MAINS
LEFT = MAIN
RIGHT = MONITOR
2 X 250W STEREO
Stereo Version Connector Section