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Topics - BMWFREQ

#1
Preamps and Effects / RG100ES GAIN mod?
April 07, 2011, 02:19:46 PM
Does anyone know how to modify the GAIN stages for the RED and GREEN channels of my RG100ES?  Is it as simple as replacing a resistor and/or cap, and if so, which one(s) and what values?

I've included an excerpt from the schematic with this post for anyone who would care to show me what components need to be changed or added.

Thanks in advance-
#2
Amplifier Discussion / RG100ES Bass mod help!
March 28, 2011, 01:32:58 AM
I would like to modify the bass output of my RG100ES.  I would like to mod the bass so that it's not so round and fat, but rather tighter/more responsive.

If anyone knows how to accomplish this, please reply with detailed instructions and schematic references if at all possible.

Thanks in advance to eveyone that replies.

BMWFREQ-

#3
I just replaced all four of the power transistors in my RG100ES, and would like to make sure they are biased to the correct voltage.  I know there is a trimmer pot on the PC board that is used for this purpose, but I am not sure where the voltage is taken.  I believe they should be biased to -.6volts, just not sure where to probe the board when setting this voltage.

If anyone has done this and can help me out, it would be greatly appreciated.

BMW FREQ