Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => Amplifier Discussion => Topic started by: Bluesman90 on July 01, 2020, 11:03:07 PM

Title: Pignose 7-100 fizz
Post by: Bluesman90 on July 01, 2020, 11:03:07 PM
Hello friends! I recently purchased a Pignose 7-100 but I can't get good clean sounds as there is some fizz in the background. Is this normal in the Pignose? Is there a way to fix this fizz?
I am attaching a video where you can hear this fizz.

https://youtu.be/_ewFZHYTvT8
Title: Re: Pignose 7-100 fizz
Post by: phatt on July 03, 2020, 03:25:44 AM
I'm not in the know about that amp but I'd guess the circuit is basic and the fizz maybe just the way they come.
Being a basic unit, Crossover Distortion of the power stage is likely the issue.
If you can dig up a schematic for that amp and post it, others here might be able to help tweak the circuit for you.
Phil.
Title: Re: Pignose 7-100 fizz
Post by: tonyharker on July 03, 2020, 06:21:46 AM
See here:
https://sites.google.com/site/pignose7100/ and

https://slowbean.net/thread/pignose-7-100-from-70s-with-germanium-transistors/?tagid=4180,4700,4958,5204,5217,5225,5240,5378,5905,6237,6830,7244,7413,7585,7655,7717,8306,8308,8390,8438,9188,9311,9327,9329,9556,9804,9828,9864,10059,10081,10199,10200,10292,10403,10404,10484