Search found 3 matches

by sgbrewing
Tue Dec 29, 2020 11:48 am
Forum: Fender Discussion
Topic: Princeton Reverb, LTP PI, No Trem
Replies: 6
Views: 1066

Re: Princeton Reverb, LTP PI, No Trem

sluckey wrote: Tue Dec 29, 2020 2:48 am I would use 1.5K cathode resistors for proper biasing. The only time Fender used 820Ω cathode resistors was when two triodes were sharing the same cathode resistor.
Thanks, what would the difference be if I used 2.2k or 3.3k cathode resistors?
by sgbrewing
Tue Dec 29, 2020 1:59 am
Forum: Fender Discussion
Topic: Princeton Reverb, LTP PI, No Trem
Replies: 6
Views: 1066

Re: Princeton Reverb, LTP PI, No Trem

The bias board does not have a ground connection. It also does not have a bias voltage output. I quit looking after spotting these errors right off the bat. Your circuit is quite a deviation from an original PR. That makes seeing a schematic even more important for evaluating your layout. Thank you...
by sgbrewing
Mon Dec 28, 2020 11:17 pm
Forum: Fender Discussion
Topic: Princeton Reverb, LTP PI, No Trem
Replies: 6
Views: 1066

Princeton Reverb, LTP PI, No Trem

Hi guys, hope you've had a good Christmas! Diving in to my second amp build and I would really appreciate some experienced eyes checking over my work :D During the first lockdown in the UK I built my first amp, a JTM45, and it went really well. Sounds great and was fun to build and research tweaks f...