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Modification 1&2Modification 3&4
POD
MAIN CHASSIS
MAIN CHASSIS
a
bb
POD
POD
Modification 1 — AUX SEND
PRE-EQ • PRE-FADER • PRE-ALT/MUTE
This modification converts AUX Sends into
pre-EQ/pre-fader/pre-ALT/mute Monitor
Sends. You can modify AUX 2, AUX 3 and/or
AUX 4 on any or all of the CR-1604’s 16 chan-
nels. Converting AUX 3 also converts AUX 5;
converting AUX 4 also converts AUX 6.
1. Remove all cords from the CR-1604 and
place it face down.
2. Remove ribbon cable plate cover (a).
Keep track of what screws go where!
3. Remove pod mounting bolts (b) and
separate pod from main chassis.
4. Remove bottom and side screws from
main chassis.
5. Remove main chassis cover and set it
aside.
6. Cut traces to selected AUX Sends (c).
7. Add jumper wires [shown as grey lines
(d) in illustration] for those AUX Sends
with cut traces. Don’t smash the wires
down tight onto the circuit board. Let
them “arch” above if possible.
8. Replace main chassis cover and reattach
top and side screws.
9. Reconnect main chassis and pod;
replace side screws.
10. Gently nudge any slack ribbon cable into
the main chassis and replace ribbon
cable cover.
Any internal modification of the CR-1604
must be performed by a competent electronic
technician. Mackie Designs accepts no respon-
sibility in the event of improperly performed
modifications or other damages and, in such
cases, may declare warranty privileges void.
* Note: Traces on different channels may
vary slightly from the drawing. (Engineering
sez channel strips are like snowflakes).
Add jumpers (d)
cut traces (c)
PRE-EQ • PRE-FADER • PRE-ALT/MUTE MODIFICATION
AUX 2 AUX 3 AUX 4
TECH
STUFF