The Amp Garage

Hi Martin, I think you are correct and it is just varnish. This PT is old and looks a little funky. After I swapped in the JJs, there was still an odor. It seemed like a lot less strong, but at this point my mind may be playing tricks on me. Also, I could not get this J201 to bias in range. It wante...

Thanks guys. I'll leave the bias resistor alone for now. The other tube biased lower maybe around 55-57%. I pulled the tubes, sprayed compressed air, cleaned the sockets with deoxit and a toothbrush, looked for any leads that may be close and causing arcing, cleaned the female side of the socket, an...

Very cool, thanks for sharing!

Preamp glass for now. V1 and V2 are RCA grey plate 12AX7A. V3 is RCA black plate 12AT7. PXL_20240510_164414227.jpg Power tubes are fender branded Sylvania short bottle 6L6GC with double top getters. PXL_20240510_164448700.jpg When I swapped the tubes I noted 2 things. First, with the bias set most n...

All good with the smoke test and forming the caps. Put my startup tubes in and biased the amp. All functions are working. Tone stack is not super effective, but I think that is just the design. Reserving tone impressions as I only played briefly and at low volume. But does strike me as more raw sou...

Looks great!

Thank you! I have not used the Jupiter caps before. As the Spragues get harder to find in stock and always more expensive, these seemed like they might be a good alternative.

Orange and blue for my Florida Gators!

-Dan

All good with the smoke test and forming the caps. Put my startup tubes in and biased the amp. All functions are working. Tone stack is not super effective, but I think that is just the design. Reserving tone impressions as I only played briefly and at low volume. But does strike me as more raw soun...

Hi Matt,

Some of those solder joints on the jacks look a bit dry, but may just be the photograph. Have you tried inserting a patch cable in the fx loop jacks?

-Dan

Hi Glenn, I'm excited to watch this build! I wanted to also drop you a note to thank you, because seeing your post reminded me I forgot to order those doohickeys for my two Erwin chassis.

-Dan

... 2. Is there any benefit to switching from the 2nd Gen Deep Switch to the to the version from the 4th/5th eras as this design does? From trying it when this amp would work, I was not that impressed with the 2nd Gen's function. ... You will find most 4th Gen amps that still have a classic tone st...

All wired up! Just need to add fuses and run the startup procedure tonight.

Sorry I misunderstood! Good luck tracking it down.

I've rolled several tubes but keep getting the same result, OD goes in and out, then out completely. I'm starting to suspect I have an error in the relay wiring. The PAB is working fine, but I would appreciate another set of eyes on the OD relay board I'm using from Taylor at AN. From left to right...

What program do you use to draw your circuit board layouts? Corel Draw? Now, don't laugh... PowerPoint. I've done faceplates with it too, just need to save as .pdf. No judgment from me since I still use Microsoft Paint for most things! :lol: I do need to look at Powerpoint now. There are some facep...