Boz running at 50volts..the preamp is working but clipping..can someone guide me to how to set the bias? im getting only 4volts after resistor R103.. and 1.2volts at IRF150 Source pin before 100ohm (R108)..pls help..thanks in advance..
rgds
tone
rgds
tone
The powermosfet IRF150 is not suitable for BOZ. You should use some TO220 fets like IRF610 or IRF510, then every thing will work.
I concur with the IRF510 suggestion. I've been using that config
for the last few years and its working very well.
Erik
for the last few years and its working very well.
Erik
I have used the IRF610 but the amp also clips with very high inputs. (>1,5 volt). I put on the input a 100k POT in series. And adjusted until it was gone.
See also:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=1917&highlight=BOZ+distortion
See also:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=1917&highlight=BOZ+distortion
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