HiHas anyone used the LC75342 pre amp/tone board fromYuanJing (China)?
I am building a modified Cooper-Smith 20W amplifier and would like to
use this board as a remote controlled "front end".
The outputs of the preamp board are via 10Uf electrolytics. The input to
the Cooper-Smith is via a 1M potentiometer between input and ground with
the wiper in to a 68k grid stopper feeding a 6SL7 floating paraphase stage.
Can anyone suggest a modification to improve on the signal matching
between the two stages, the Cooper-Smith is set up for a 400mV approx
input level.
Cool that you are building an amplifier! I built the
LC75342 Pre Amp and its noisy as all heck. I am getting a ton of HISS. So if you used it in your Amp I would love to know how it came out! Was it noisy like mine? Did you do anything special to resolve all the hissing? Maybe I should replace the caps on the board with better ones?
LC75342 Pre Amp and its noisy as all heck. I am getting a ton of HISS. So if you used it in your Amp I would love to know how it came out! Was it noisy like mine? Did you do anything special to resolve all the hissing? Maybe I should replace the caps on the board with better ones?
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