The Amp Garage

These are Rosenthal resistors. Rosenthal later became Draloric. I don’t know about the composition though.
https://www.vishay.com/en/company/brands/draloric/

Ah ok :D It’s interesting to see so many little differences between the layout and original pics (and your build), noval sockets turned 180 degrees etc… One more question. Are these nte caps metalized polyester? I just started my own 183 build and try to find subsitudes similar in composition an con...

Very impressing build! Possibly you can‘t go further in terms of cloning.. There seem to be an additional grounding point for the loop jacks. What‘s the difference in grounding them at this spot? Thank you. I am not sure of the effect other than it possibly eliminates a ground loop at the EFX send/...

Very impressing build! Possibly you can‘t go further in terms of cloning..
There seem to be an additional grounding point for the loop jacks. What‘s the difference in grounding them at this spot?

B+ filter capacitors, I think it‘s called doghouse.

Gruß,
Josef

Hi Glenn, how did you do the grounding of the pot housings? If there is a thick layer of powdercoating on your chassis, there is a chance your pots are not grounded. And if your coax is soldered to the pot housings… This could be the reason of your noise problem.

I don‘t know if it‘s down just momentarily but this may help you:

https://web.archive.org/web/20201021095 ... schematics

Is this one of the Dumbles sold by the Roy brothers in Germany late 70s? According to an article I read in a german magazin years ago, these Dumbles were produced in a small batch(a dozen or so) with identical circutries. I‘m relativly new to this amps, but my first impression is this is not a mod D...

A quick update: got it all working now and I'm very happy with the result. I like the FET a lot so I'm thinking about making it switchable..
I will post some pictures as soon as I have a cabinet.

Josef

Nice build and great sounds, Niki! This circiut loves singlecoils or brighter sounding humbuckers like filtertrons IMO
Which transformers are you using?

ah relays :D they've been the one consistent problem area in builds for me :mrgreen: :oops: make sure your relays aren't polarised ones is my advice then they will always work with the layouts posted. If you've bought polarised relays , which is easy to do by mistake, certainly with the OMRON mini ...

Thanks to all for your help so far. The OD is working now, the switch had no ground connection :D . I measured 22v at the relay and about 17v when it's engaged. I ended up playing it for an hour or so before I realized the alligator clips are still inside the amp :oops: this amp is just.. wow.. it's...

Thanks xtian and drew, to be honest I built a TAD 5e1 kit an a bunch of pedals before but thos is the first ‚real‘ amp I built from scratch. There are some minor things I feel a bit unconfortable with but overall its ok. There is no clicking or something when i flip the channel switch. Also there ar...

Hi all! :D my name is Josef and I'm from Regensburg, Germany. I found this forum a few weeks ago and since then I lurk around here whenever I can find some time.. I build the 50w 3rd gen ODS from the files section- my first amp ever :lol: . It was quite challenging but also a really interesting jour...