I have the "factory" service manual (from Fosgate, 08/1990) for the CC-2 if anyone is still interested. Aside from the schematics, the important procedure for bias and offset adjustment is present in the manual.
If this site keeps a repository for such documentation, I can contribute it to the cause.
I once fixed the permanently triggered clipping indicator also, which involved re-specification of a resistor to higher power rating. I don't have any notations on this fix, but I might be able to re-examine the hardware to figure out what it was.
If this site keeps a repository for such documentation, I can contribute it to the cause.
I once fixed the permanently triggered clipping indicator also, which involved re-specification of a resistor to higher power rating. I don't have any notations on this fix, but I might be able to re-examine the hardware to figure out what it was.
JeffLloyd the service manual would be very useful! If it's small enough, I think you can attach it as a reply in this thread.
Service manual for Audionics CC2
I would also be interested in getting a hold of the service manual for the Audionics CC2.
Retsel
I would also be interested in getting a hold of the service manual for the Audionics CC2.
Retsel
I just got a cc-2 as a gift and am re-capping. I would love to get a manual so I can adjust the bias and such. What bias voltage should it be set to on the bias test points?
Bias and Offset instructions
I just saw your question. Here are the instructions for biasing the Audionics CC2 amplifier.
1. Remove amplifier cover by removing the 14 black retaining screws. Avoid
heatsink compound, as it is quite messy. All adjustments are made on either
sidle of the amplifier, in the area of the output devices.
2. Bias (the adjustment pot towards the front of the amplifier) is set with no signal input, and is measured across the two bias test points (located in the middle of each set of output devices). With the amplifier cold (just turned on), the bias is set for 6-8 mv across the 2 bias test points. Let the unit sit for an hour to allow for warm up bias drift. Then check the bias again. It should be anywhere from 20 to 27 mv. If it is higher than this, reduce the amount of bias so that it falls within this range. Bias adjustments are made through the heatsink module (see above).
3. DC offset adjustments are made through the rear hole ln the heatsink module (the adjustment pot towards the rear of the amplifier). It ls set by observing the DC output of the amplifier at idle (no signal). Set the sensitivity to its highest range, DC coupled, and adjust the offset pot to 0 volts (mv),+ or - 2 mv. A millivolt meter may be used instead of a scope, if available.
I just saw your question. Here are the instructions for biasing the Audionics CC2 amplifier.
1. Remove amplifier cover by removing the 14 black retaining screws. Avoid
heatsink compound, as it is quite messy. All adjustments are made on either
sidle of the amplifier, in the area of the output devices.
2. Bias (the adjustment pot towards the front of the amplifier) is set with no signal input, and is measured across the two bias test points (located in the middle of each set of output devices). With the amplifier cold (just turned on), the bias is set for 6-8 mv across the 2 bias test points. Let the unit sit for an hour to allow for warm up bias drift. Then check the bias again. It should be anywhere from 20 to 27 mv. If it is higher than this, reduce the amount of bias so that it falls within this range. Bias adjustments are made through the heatsink module (see above).
3. DC offset adjustments are made through the rear hole ln the heatsink module (the adjustment pot towards the rear of the amplifier). It ls set by observing the DC output of the amplifier at idle (no signal). Set the sensitivity to its highest range, DC coupled, and adjust the offset pot to 0 volts (mv),+ or - 2 mv. A millivolt meter may be used instead of a scope, if available.
Misdirected reply?
I did not ask any question about the CC-2, and I have the manual which gives the biasing procedure in the reply. Could it be someone else who asked about this?
I did not ask any question about the CC-2, and I have the manual which gives the biasing procedure in the reply. Could it be someone else who asked about this?
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