Mackie CR1604 Owner's Manual download pdf (Page 28)

MODIFICATIONS

CR1604-VLZ Post-EQ Mod

This changes

AUX SENDS 1

and

, with the

pre switch engaged, to receive their signals post-

instead of pre-

. The signal remains post-low cut,

pre-mute and pre-fader. With the pre switch disen-

gaged (up), the signals are not affected by the mod.

The following must be performed for each channel

you wish to modify:

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 point C, between the

square and round pads. Be careful to cut all

the way through the conductor, and do no cut

any nearby traces. Each channel is slightly

different, but this graphic shows Channel 16,

which is very different from the others, and

Channel 15 (respectively), which is similiar to

the remaining channels.

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

to the square pad at point C.

7. Repeat for each channel you wish to modify.

8. Check your work very carefully, them put the

bottom cover back the way you found it.

You’re done!

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.

jumpers

here

cut

here

Holes

Jumper

Solder

BEFORE

AFTER

Ch. 16 Ch. 15

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 50 51

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Mackie CR1604 Owner's Manual Page 28

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