I'm looking for the schematic for a mackie cr-1604, not the vlz model..can anyone help?

You should be able to get this directly from Mackie service. Please see the link below for the contact information. Please note that the exact model number adn serial number will be required to insure that the correct transformer is obtained. There are a few variants of the 1604,

Dan

Link: http://www.mackie.com/support/service/index.html

Use the main left and right... the CR outputs are INTENDED for running control room monitors.

The best way is to use a two-way crossover between the mixer and the amplifiers. In your case, the low output from teh crossover would go to the powered subs, the highs to the QSC. Use the crossover adjustment to set the frequency crossover point to get the sound quality you require.

Dan

Mackie 1604 ---> Crossover --- Highs ---> QSC --->Speakers
'
-----> Crossover --- Lows ---> Powered Subs.

If the faders have become noisy, they may be changing due to poor contact. Try putting a small amount of CRC226 in the center of the slot of each fader and then move fader knob to top and bottom. CRC226 is available in the electrical department of Home Depot in a small can with spout... about $2.70

The manual can be downloaded from the link below.

Dan

Link: http://www.mackie.com/pdf/archive/cr1604_om.pdf

If you havent ground looped the chanels. Most of the time the chanels need to be cleaned.

get in contact with this company, i am sure they can help you

http://www.mackie.com/products/1604vlz3/

Easiest is to use a 1/8 inch stereo to 1/4 inch splitter cable (1/4 mono's) and plug into the tape input. Then use the tape level knob.

IF you want to use sliders, then plug the spliter 1/4 inch plugs into two channels and set the PAN controls for these to opposite ends and then you have to adjust two sliders to control the gain.

Mackie does sell parts. If you cannot afford or get the part, procure some metal and make your own. Mackie is headquartered in Woodinville WA I believe.

(800) 898-3211 Monday-Friday, 8am-4pm Pacific Standard Time

You may be getting a small amount of cross-talk. How high are the gain settings and sliders when this occurs? Also, can you describe the overall setup that you are using? I'll check the prints, but you should not be getting any volume unless the gains are maxed.

Dan