I recently assembled a Flabulanche. Here is an image of the guts(component side):
Now I will first say that I assemble this from parts I had laying around, so I ended up substituting a few things. I'm curious to know if my substitution of certain parts is what is causing my issue.
Instead of 1N5817 diodes I used 1N5818 diodes, but I wouldn't think that would matter so much. Instead of the 2N5457 I used J201. My supply voltage after the voltage doubler is about 17.98V, but even with my 10K trimmers dialed all the way down, I get about 12.7V at T1, about 13.5V at T2, and about 14.4V at T3. I am also getting a gate type of effect with both HI and LOW compression settings. Basically if I play lightly the sound won't come through, but if I dig in on the guitar it will come through. My guess is these problems arise from using J201's instead of the 2N5457 and not working with the bias circuit, but I would appreciate someone smarter than me to tell me that is the case.
Thanks for any insight.
Now I will first say that I assemble this from parts I had laying around, so I ended up substituting a few things. I'm curious to know if my substitution of certain parts is what is causing my issue.
Instead of 1N5817 diodes I used 1N5818 diodes, but I wouldn't think that would matter so much. Instead of the 2N5457 I used J201. My supply voltage after the voltage doubler is about 17.98V, but even with my 10K trimmers dialed all the way down, I get about 12.7V at T1, about 13.5V at T2, and about 14.4V at T3. I am also getting a gate type of effect with both HI and LOW compression settings. Basically if I play lightly the sound won't come through, but if I dig in on the guitar it will come through. My guess is these problems arise from using J201's instead of the 2N5457 and not working with the bias circuit, but I would appreciate someone smarter than me to tell me that is the case.
Thanks for any insight.