MODIFICATIONS
For most folks, the MS1202-VLZ works just1. PRE-FADER MOD (AUX TO MONITOR)
fine the way it is. But for special applications,
This modification changes AUX SEND 2 to
there are three signal routing changes that can
be pre-fader, pre-mute instead of post-fader,
be performed easily on the MS1202-VLZ. Easy
post-mute. (OFader� refers to the channel
for someone with soldering experience, that is.
GAIN knob, and OMute� refers to the channelOs
If you donOt know how to solder, find a techni-
MUTE/ALT 3-4 switch.) In order to convert the
cian that can. This is NOT a good place to learn!
entire mixer, it must be done on each channel.
Y Modification A changes AUX SEND 2 to be
Is slightly more involved for the stereo chan-
pre-fader, pre-mute instead of post-fader,
nels 5�12. The work area is on the underside
post-mute.of the circuit board, near the channel AUX
Y Mod B changes AUX SEND 1 (in postSEND knobs.
mode) and AUX SEND 2 to receive signal1. Remove all cords, including the power
regardless of the channelOs MUTE/ALT
cable, from the MS1202-VLZ.
switch position, but still be post-fader
2. Place the mixer upside-down on a dry,
(GAIN knob).
non-marring surface.
Y Mod C changes the SOURCE matrixOs
3. Remove the screws that attach the bottom
MAIN MIX selection to tap the stereo
cover. Keep track of what screws go where.
signal before the MAIN MIX level control
Remove the bottom cover.
(pre) instead of after (post).
4. Using a sharp OX-acto� type knife, cut the
UL Warningconductor at point �AO (channels 1�4) or
the conductors at points �ALO and �ARO
Caution! These modification instructions
(channels 5�12). Be careful to cut all the
are for use by qualified personnel only. To
way through the conductor, and do not cut
avoid electric shock, do not perform any ser-
any nearby traces.
vicing other than changing the fuse unless
5. Add a jumper from point �BO to the square pad
you are qualified to do so. Refer all servicing
at point �AO (channels 1�4) or from points �BLO
and modifying to qualified personnel.
to �ALO and �BRO to �ARO (channels 5�12).
Mackie Disclaimer
6. Repeat for all channels.
Any modification of any Mackie Designs7. Check your work very carefully, then put
product must be performed by a competentthe bottom cover back the way you found
electronic technician. Mackie Designsit. YouOre done!
accepts no responsibility for any damages
or injuries caused by any modification,
regardless of the source of the modification
instructions or the qualifications of the tech-
nician performing them. In the case of such
damages, Mackie Designs may declare
warranty privileges void. BE CAREFUL!
A Note About Jumpers
Ch.Os 1�4Ch.Os 5�12
When installing jumpers, do not run their
5jumper
ends through holes in the circuit board.here
5
Rather, solder them flat against the desiredjumperBR
here
B
pad (the flat silver area, possibly with a hole inBL
AL
the middle). Make sure the ends of these flat
4
wires do not extend beyond the pad.cutA
4
hereAR
cut
here
Jumper
Solder
BEFOREAFTER
#1: Pre-Fader Mod
Holes
26 |
ACEC
