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13
Part 4 — TECH STUFF
SPECIFICATIONS
S/N ratio
90dB ref: +4dBu working level (all channels
assigned, Channels 1–4 panned alternately left/
right, Channels 5–12 set at center, main line out
single-ended, 20Hz–20kHz)
Mic preamp equivalent input noise (E.I.N)
–129dBm @ 150 ohms, 20Hz–20kHz
Maximum gain (mic in to main out)
86dB (to balanced out)
80dB (to unbalanced out)
Frequency response
20Hz to 40kHz, ±1dB (mic in to main line out)
Distortion
Less than .025%, 20Hz–20kHz
Pan attenuation
–67dB
Adjacent channel crosstalk (at insert outputs)
–85dB @ 1kHz
Equalization
Low: ±15dB @ 80Hz
High: ±15dB @ 12kHz
Maximum output level
+28dBu balanced
+22dBu unbalanced (using TRS plug with ring
disconnected)
Weight
7 lbs.
Power requirements
120 VAC, 60Hz, 20 watts
Dimensions
SERVICE
Make sure to save your sales receipt. It’s
useful in establishing when you bought the
mixer and for insurance purposes if some-
one happens to borrow your entire studio
while you are on vacation in Mazatlan.
TROUBLESHOOTING
We haven’t included a gigantic trouble-
shooting chart with circles and arrows and
captions on the back because our Service
Department and support persons are here to
handle that sort of thing. Still, there are
some simple tests you can make before you
call to determine if your MS 1202 is really
the culprit. This saves time all around and
prevents you from feeling sheepish when it
turns out that it’s really your Blort-Tronics
Sonic Defrabulator that’s creating the prob-
lem, and not our mixer.
Problem: Dead Input
Are the gain controls turned up? (Honest,
this happens.)
Unplug all Channel Insert hook-ups.
Try the same instrument and cord in
another channel.
Problem: Dead Output
Are the gain controls turned up?
Unplug all Channel Insert hook-ups from
the mixer.
Switch output cords. For example, if the
left output is dead, switch the left and right
output cords at the mixer. If the problem
moves to the right, it’s not the mixer.
Problem: Noisy Output
Turn all gain knobs and AUX returns
down. If the noise goes away, bring levels
back up one at a time, checking for noise at
each step.
Unplug everything except the output
where the noise was detected. If the noise
goes away, plug everything back in one at a
time, checking for noise at each connection.
Problem: No Power
Check the MS 1202 fuse (see page 7).
Mackie Designs is always striving to improve our mixers
by incorporating new and improved materials, compo-
nents and manufacturing methods. Because we’re always
trying to make things better, we reserve the right to
change these specification at any time without notice.
©1995 All Rights Reserved, Mackie Designs.
Printed in the good ole U.S.A.
6 RACK SPACES
11.470"
2.64"
2.2"
1.425"
19"
10.35"
Shown with optional rack brackets
LEVEL
SETTING
STEPS
TECH
STUFF
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