Mackie 1202 Manuel du propriétaire télécharger pdf (Page 28)

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3. MAIN MIX SOURCE MOD

This modification changes the SOURCE

matrix’s MAIN MIX selection to tap the stereo

signal before the MAIN MIX level control

(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 no 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 1202-VLZ PRO.

2. Place the mixer upside-down on a dry, non-

marring surface.

3. Remove the screws that attach the bottom

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!

#3: Main Mix Source Mod

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