Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: labb on August 02, 2020, 08:26:50 am

Title: Princeton Reverb build
Post by: labb on August 02, 2020, 08:26:50 am

Just finished building the PR without reverb or trem and it turned out pretty good. The amp is really quiet. You don't know it is on untill you hit a note. Seems to start breaking up at about 12:00 on the volume . Only issue so far is that the dang thing is really loud. At 2 on the volume it is shaking the walls. When I can get it back from the player I will install a MV. That should fix it. I was intending to post some pics but I saw P2P's pic and don't want to shame myself..Take care, be safe...

Title: Re: Princeton Reverb build
Post by: vampwizzard on August 02, 2020, 12:21:56 pm

no shame in where your skills are at right now! Which PR did you do? Blackface? Did you keep the reverb load resistor/filter cap in there?

Title: Re: Princeton Reverb build
Post by: labb on August 02, 2020, 12:53:53 pm

AA1164 and yes on reverb load resistor and cap..I did cheat a little the transformers are over sized, 330-0-330 volt 120 ma. the OT is 20 watt. basically the deluxe transformers. Running 450 v. on the 6V6 plates, 155 v. on the pre amp tube plates and 185 v on the PI. I gave it a mid range pot and it is set up to switch out the tone stack.

Title: Re: Princeton Reverb build
Post by: vampwizzard on August 02, 2020, 02:34:40 pm

awesome! would love to see pics of it!