Mackie 1202-VLZ Pro Reference Manual page 8

This modification changes the SOURCE
matrix's MAIN MIX selection to tap the ste-
reo signal before the MAIN MIX level con-
trol ( pre ) instead of after ( post ). This could be
especially handy for live work where the engi-
neer wants to be able to control the MAIN
MIX level (sent to the house system) without
changing the level in his headphones. The
work area is on the underside of the circuit
board, near the MAIN MIX level control.
Caution: This modification also causes the
meters to indicate pre MAIN MIX levels.
They will not longer indicate the signal level
at the MAIN OUTS, but rather the signal
level at the PHONES and CONTROL
ROOM outputs (when MAIN MIX
SOURCE is selected).
1. Remove all cords, including the power
cable, from the 1402-VLZ PRO.
2. Place the mixer upside-down on a dry,
non-marring surface.
3. Remove the screws that attach the bot-
tom cover. Keep track of what screws go
where. Remove the bottom cover.
4. Using a sharp "X-acto" type knife, cut the
conductor at points 'XL' and 'XR'. Be
careful to cut all the way through the
conductor, and do not cut any nearby
traces.
5. Add a jumper from point 'YL' to the
square pad at point 'XL' and from point
'YR' to the square pad at point 'XR'.
6. Check your work very carefully, then put
the bottom cover back the way you found
it. You're done!
CUT
4
HERE
JUMPERS
HERE
5
8