Modification 3&4

Modification 1&2

POST-EQ • POST-FADER • PRE-ALT/MUTE MODIFICATION

Add resistor (e)

Add Jumper (d)

Cut here (c)

TECH

STUFF

POD

b b

a

MAIN CHASSIS

POD

MAIN CHASSIS

POD

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 conversion 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.

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 responsibility 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).

32