MICROMIX
MICROMIX
GENERAL O
OPERATING IINSTRUCTIONS
1. Connect the AC power cord to a 120Volt AC grounded power outlet (220 to 240 Volts in
export units).
2. Turn the
MAIN
and
MONITOR MASTER
controls to
0
for now, then switch on the
POWER
.
3. You can connect low-impedance microphones to the 3-pin
XLR
type
MIC
inputs.
4. Connect high-impedance mics or
mono
line-level signal sources (i.e. amplifier
line
outputs,
the output of a
mono
mixer, an electric instrument, etc.), to the 1/4”
BAL LINE IN
jacks on
channels
1
to
6
.
Do not
connect more than one signal source to any of these channels, that
includes stereo outputs (if you try to connect a stereo source to a mono channel using a
Y
adapter, you may get distortion).
5. Connect stereo sources (tape deck, CD player, stereo keyboard instrument, etc.) to channels
7/8
and/or
9/10
via the stereo
RCA
(phono) type inputs. Once again, connect
only
one sig-
nal source per channel, and use shielded patch cords for
all
pre-amp connections.
6. Using
18
-gauge, or heavier, speaker cables (
never
use shielded patch cords to connect
speakers, they cannot handle the high current and will waste power by heating up), con-
nect one
or
two
8-
Ohm main
PA
speakers to the
SPEAKER
outputs on the back panel. If
you have
4-
Ohm speakers, you may connect only one. (
Note:
to deliver maximum power
to a pair of
8-
Ohm main PA speakers, connect only one speaker to each amplifier).
7. If you are employing a separate power amplifier for the monitor speakers, connect the main
speakers, as in
6,
then run a shielded patch cord from the
MONITOR OUT
jack to the
input of the monitor power amp. If you are employing a separate graphic equalizer for the
monitors run a shielded patch cord from the
MONITOR OUT
jack to the input of the
EQ
.
(
A good idea:
remember there is no channel
EQ
on the monitor signals and the built-in
graphic
EQ
is only for the main PA sound). Then, another one from the
EQ
’s output to the
input of the monitor power amp.
8. Position your main
PA
speakers at the front of the stage, pointing directly out at the audi-
ence. Position your monitor speakers on the stage floor, in front of the mic stands, pointing
up at the backs of the mics. (Remember to use
cardioid
or
uni-directional
mics to reduce
the threat of monitor feedback).
9. During a sound check, with the band playing, or other sources feeding the mixer inputs,
make the following control adjustments:
i. Set the channel LOW, MID, and HIGH EQ controls at center. Now, set the channel
GAIN, MON, and EFX controls at “0” and the GRAPHIC EQ sliders at center position.
ii. Turn up the
MAIN
and
MONITOR MASTER
controls to approximately
8
, the
MAIN
EFX
master to around
7
and
MONITOR EFX
master to
5
.
iii. Turn up the channel
MON
controls until the performers can hear themselves at ade-
quate volume levels without feedback.
iv. Turn up the channel
GAIN
controls slowly until each channel can be heard at the
desired volume level through the main
PA
speakers.
v. Turn up the
EFX
controls on those channels requiring reverb. Usually this would be
the lead and harmony vocal channels. Reverb may be used on other channels or on
recorded music, but at low levels.
10.Feedback during a performance is usually caused by one of the monitors. The main PA is
less likely to feed back because the mics are so far away from the main PA speakers.
Therefore, if you are using monitors and feedback occurs, try the following procedures:
i. Turn the MONITOR master down until the feedback stops.
ii. If you have a graphic equalizer patched between the MONITOR output and your
monitor power amp, pull down one or two (but not more) of the EQ sliders in the fre-
quency range where the sound seems to be occurring.
iii. Now turn the MONITOR master back up. If the feedback reoccurs, push the EQ slid-
er(s) back up to center position and try pulling down one or two others.
iv. In the rare case of main system feedback, follow the above type of procedure, but use
the MAIN master and the built in GRAPHIC EQ.
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