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Jerrold - CA-50T Microphone Preamp [schematic]
Posted: 22 Jul 2013, 16:06
by tictac
My next door neighbor was cleaning out his mother-in-laws garage and gave me a non-functioning Jerrold P.A. amplifier. It has some interesting mic preamp modules that clip into the chassis. I drew up a schematic and it looks kinda familiar; maybe Rangemasterish, Fuzzfacish, kinda thing?
Seems like a little tweaking could make a nice little noise maker; What do you think?
Re: Does this circuit look familiar?
Posted: 22 Jul 2013, 16:52
by jwpartain1
Plug into to and play it!
If you don't like it, pull the 15k feedback resistor and see what happens.
Re: Does this circuit look familiar?
Posted: 22 Jul 2013, 22:39
by mictester
jwpartain1 wrote:Plug into to and play it!
If you don't like it, pull the 15k feedback resistor and see what happens.
Better yet, pull one end of the 15k feedback resistor and put in a 100k pot wired as a variable resistor. You'll get a variable fuzz effect!
Re: Does this circuit look familiar?
Posted: 22 Jul 2013, 22:51
by tictac
It kinda reminds me of a Colorsound Powerbooster / Overdrive circuit which has a 12K feedback resistor like this one. Yea... gotta play around with this thing
