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Modification 3 — AUX SEND
POST-EQ • POST-FADER • PRE-ALT/MUTE
This modification converts AUX Sends into
post-EQ/post-fader/pre-ALT mute Monitor
Sends. You can modify any or all of the
CR-1604’s 16 channels. NOTE: The conver-
sion affects ALL AUX Sends per channel.
1. Remove all cords from the CR-1604 and
place it facedown.
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 trace (c).
7. Add jumper wire (d). Don’t smash the
jumper down onto the circuit board. Let
it “arch above,” if possible.
POD
MAIN CHASSIS
MAIN CHASSIS
a
bb
POD
POD
* Note: Traces on different channels may
vary slightly from the drawing. (Engineering sez
channel strips are like snowflakes).
8. Add 20,000Ω (20K), 1/4-watt resistor (e).
9. Replace main chassis cover and reattach
top and side screws.
10. Reconnect main chassis and pod, and
replace side screws.
11. 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.
TECH
STUFF
Modification 1&2Modification 3&4
Add Jumper (d)
Add resistor (e)
Cut here (c)
POST-EQ • POST-FADER • PRE-ALT/MUTE MODIFICATION