Search found 20 matches

by rdavy
Sat Mar 09, 2024 7:25 pm
Forum: Technical Discussion
Topic: Tweedle Dee PI - LNFB and trimmer
Replies: 38
Views: 1424

Re: Tweedle Dee LNFB

Also keep in mind, the 1 Meg grid leak resistor is 10 Meg in the Tweedle Dee.
by rdavy
Sat Mar 11, 2023 1:41 pm
Forum: Fender Discussion
Topic: Deluxe Reverb, one channel, no tremolo
Replies: 40
Views: 8158

Re: Deluxe Reverb, one channel, no tremolo

Yeah, it's pics like that one that make me wanna build yet another amp :lol:
Looks fantastic!
by rdavy
Sun Mar 05, 2023 5:08 pm
Forum: Fender Discussion
Topic: Deluxe Reverb, one channel, no tremolo
Replies: 40
Views: 8158

Re: Deluxe Reverb, one channel, no tremolo

I'm curious how you're going to label the faceplate. Love the curly maple!
by rdavy
Sat Mar 04, 2023 12:08 am
Forum: Garage Talk
Topic: RIP David Lindley
Replies: 6
Views: 869

RIP David Lindley

https://claremont-courier.com/latest-ne ... -78-72983/

Huge inspiration for a lot of us here.
by rdavy
Sun Jan 08, 2023 1:49 pm
Forum: Technical Discussion
Topic: Tube dead on arrival?
Replies: 8
Views: 924

Re: Tube dead on arrival?

I just recently had a brand new 6V6 screen grid internally short to ground. Very frustrating because I thought I had done something wrong.
by rdavy
Mon Jan 02, 2023 8:16 pm
Forum: Fender Discussion
Topic: Princeton Reverb kit Screen Grid Problem
Replies: 8
Views: 1346

Re: Princeton Reverb kit Screen Grid Problem

Well, new JJs made all the difference. Amp works as it should. It's frustrating because the tubes they supplied the kit with were "NEW" tubes. Is there a chance that when the tube heated up, the screen grid connected to the suppressor grid and that's what grounded it? Either way, thank you xtian for...
by rdavy
Mon Jan 02, 2023 7:38 pm
Forum: Fender Discussion
Topic: Princeton Reverb kit Screen Grid Problem
Replies: 8
Views: 1346

Re: Princeton Reverb kit Screen Grid Problem

Will do and will update with results. Solved the bias issue. A 1.2meg resistor got sorted into my 1k5 bin and I missed the color code when installing it on the tube socket. Replaced it with the correct resistor, dumb mistake on my part.
by rdavy
Mon Jan 02, 2023 5:37 pm
Forum: Fender Discussion
Topic: Princeton Reverb kit Screen Grid Problem
Replies: 8
Views: 1346

Re: Princeton Reverb kit Screen Grid Problem

I would expect the same bias voltage on both pins 5. That's a little weird. Is your cabinet shielded? I wonder if you shorted something when you put your chassis in the cabinet. I thought so too, one of the 1K5 grid resistors I put in must not be in spec from the other (will investigate). The cabin...
by rdavy
Mon Jan 02, 2023 3:15 pm
Forum: Fender Discussion
Topic: Princeton Reverb kit Screen Grid Problem
Replies: 8
Views: 1346

Re: Princeton Reverb kit Screen Grid Problem

Continuity between pin 4 and ground was what I was referring to.
With the power tubes out, my B+ off the rectifier tube is 415vdc.

V6 - 6V6
pin 3 413vdc
pin 4 408vdc
pin 5 -24.5vdc

V5 - 6V6 (the tube in question)
pin 3 413vdc
pin 4 408vdc
pin 5 -28.9vdc
by rdavy
Mon Jan 02, 2023 1:45 am
Forum: Fender Discussion
Topic: Princeton Reverb kit Screen Grid Problem
Replies: 8
Views: 1346

Princeton Reverb kit Screen Grid Problem

Hello all, I just built a Mojotone PR kit for a friend with small mods (no tremolo, added mid control and pre-phase inverter master volume) and everything tested fine until I put the chassis into the cabinet for a final run-through. I turned the amp on and it started to smoke. I opened it up and the...
by rdavy
Sun Oct 23, 2022 11:12 pm
Forum: Trainwreck Files
Topic: Nuke Schematic
Replies: 17
Views: 139525

Re: Nuke Schematic

I will say that I did remove the mod in my amp and bring the circuit back to stock.
by rdavy
Sun Sep 18, 2022 1:13 pm
Forum: Dumble Discussion
Topic: SSS known for flabby low end?
Replies: 14
Views: 3214

Re: SSS known for flabby low end?

Have you tried a different speaker?
by rdavy
Sun Jan 09, 2022 6:12 pm
Forum: Dumble Discussion
Topic: PT from ODS #075 on Reverb
Replies: 2
Views: 530

Re: PT from ODS #075 on Reverb

martin manning wrote: Sun Jan 09, 2022 4:42 pm 125mA for a 100W amp?
Maybe that's why it was replaced at some point?
by rdavy
Sat Jan 08, 2022 12:33 pm
Forum: Trainwreck Files
Topic: Nuke Schematic
Replies: 17
Views: 139525

Re: Nuke Schematic

rdavy, when you say you modded your Normal channel, are you meaning that you modded your Normal channel to the Nuke 'Vibrato' channel specs? Did you keep the Reverb channel intact? If so, what 1/2 tube did you rob to create the 3rd stage? Thanks. Also, to the author, looking at that 3rd stage, expl...
by rdavy
Thu Dec 09, 2021 10:56 pm
Forum: Garage Talk
Topic: Kluson Users Awareness Campaign!
Replies: 9
Views: 1465

Re: Kluson Users Awareness Campaign!

I believe WD Music owns Kluson now. I agree, they are really nice tuners for the money.