Mackie 1202-VLZ Pro Reference Manual page 12

This modification changes the tap point of
the Mix-B Source switch (engaged) from pre -
fader/ pre -mute to post -fader/ post -mute. It
must be done on each channel. For example,
if you have a 24•8, the modification must be
done on all 24 input channels.
See Figure below. This modification takes
place on each channel strip in an area under
the Mix-B Source switch.
1. Remove power cable.
2. Cut the conductor at Point G.
3. Add a jumper at Point H.
4. Repeat for all input channels.
BEFORE
cut here (G)
AFTER
add jumper (H)
This modification converts the Mix-B Source
switch to a Mix-B MUTE switch. The switch
will no longer be able to source the channel
signal. This modification must be done on
each channel. For example, if you have a
24•8, the modification must be done on all
24 input channels.
See Figures below. This modification takes
place on each channel strip in an area under
Mix-B Source switch.
1. Remove power cable.
2. Cut the conductor at Point G.
3. Add Jumper to point H.
4. Repeat for all input channels.
BEFORE
cut here (G)
AFTER
12
add jumper (H)