Dumbleland 300SL on reverb

[rootz]

Just slightly outside my budget range, so I let this one for you guys.

However, these rarely come up on reverb, let alone we can see a bit of the layout of the amp. I think it has been discussed before. At least I remember a lengthy discussion about the transformers. One of the pictures shows a relatively clear presentation of the top of the chassis, with the tube designations, where the bolts are, etc. The layout is very reminiscent of that of the SSS#005. Looks like a board for the preamp and filter/reverb recovery. Both 7025 tubes. Board laid out around the tube sockets. On the back side of the top we see a 12at7 (I suppose) as reverb driver, next a 12au7 (phase inverter) and dual 12bh7 tubes (probably paralleled driver triodes).

Those transformers are from an SVT, aren't they? I wonder if Dumble wired in the dual primaries from the PT: plates on 660V, screens on 345V? I don't know, has that been discussed before?

Anyway, leaving all pictures from the ad of the amp here, we might learn something new from them!

[dbharris]

Very cool, thanks for posting Rootz!

-Dan