Mackie CR1604 Owner's Manual download pdf (Page 29)

UL Warning

CAUTION! These modi-

fication instructions are

for use by qualified per-

sonnel only. To avoid

electric shock, do not perform any servicing

other than changing the fuse unless you

are qualified to do so. Refer all servicing

and modifying to qualified personnel.

Mackie Disclaimer

Any modification of any Mackie Designs prod-

uct must be performed by a competent electronic

technician. Mackie Designs accepts no responsi-

bility for any damages or injuries caused by any

modification, regardless of the source of the modi-

fication instructions or the qualifications of the

technician performing them. In the case of such

damages, Mackie Designs may declare warranty

privileges void. BE CAREFUL!

About Jumpers

We recommend solid (non-stranded) wire,

26–28 gauge (wire-wrapping variety). When in-

stalling jumpers, do not run their ends through

holes in the circuit board. Rather, solder them flat

against the desired pad (the flat silver area, possi-

bly with a hole in the middle). Make sure the ends

of these flat wires do not extend beyond the pad.

CR1604-VLZ Source Mod

This changes the

C-R/PHONES

level control

in the

SOURCE

matrix to receive the main mix

stereo signal pre-

MAIN L-R MIX

fader instead

of post-

MAIN L-R MIX

fader.

You can accomplish the same result that this

modification provides by using two standard

⁄

tip-sleeve “jumper cables” plugged into the

MAIN

INSERT

(

and

) to the first click and the other

end plugged into

STEREO AUX RETURN 4

assigned to

C-R/PHNS ONLY

STEREO AUX

RETURN 4

level will control the volume as well as

C-R/PHONES

level control.

You can also use the

TAPE INPUT

(

and

)

RCA jacks (you will need

⁄

" to RCA cables or

adapters) and assign the

TAPE

source button in

the

SOURCE

matrix.

1. Remove all cords, including the power cable,

from the CR1604-VLZ.

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

marring surface.

3. If you have converted your mixer to the rack-

mount position or have installed a RotoPod,

undo those changes and temporarily configure

the mixer in the original desktop mode. You do

not have to install the pod, just get it out of the

way of the bottom cover.

4. Remove the screws that attach the bottom

cover. Keep track of what screws go where.

Remove the bottom cover.

5. Cut the conductor at points ZL and ZR,

between the square and round pads. Be

careful to cut all the way through the conduc-

tor, and do no cut any nearby traces.

6. Add a jumper from the square pad at point YL

to the square pad at point ZL and another

from the square pad at point YR to the square

pad at point ZR.

7. Check your work very carefully, then put the

bottom cover back the way you found it.

You’re done!

Holes

Jumper

Solder

BEFORE

AFTER

umpers

here

cut

here

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Mackie CR1604 Owner's Manual Page 29

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