TWEEDLE DEE SINGLE CHANNEL + TREMOLO

[fred.violleau]

Hey guys,

Another Tweedle Dee build is on the way!
I want to assemble :
- a single bright channel
- with cathode bypass and NFB as provided on Rob Robinette's website (I love this feature that really extends the palette of the 5E3);
- Dumble PI cathodine (with Lar Mar type II Master Volume and 470k grid stopper) ;
- Tremolo ala Fender 1164 (but one triode only)
- adding a bias supply ala Princetone;

Here is the Schematic I put together:

Tweedle Dee + Harmonic Vibrato Schematic.pdf

Let me know if you see any error, I should start my build next week, turning an old Symphonic Electronic Corp tube amp into a rock machine !

Thanks again
- to Charlie Winston for providing the schematic of the Tweedle Dee,
- to Rob Robinette for the many explorations and tweaks provided on his website,
- to this great community sharing generously its time and knowledge with fellow apprentice like me !

Fred;

[fred.violleau]

Here are a few pics of the donor Symphonic amp.

Originally a stereo tube amplifier with single ended 6V6s, tube rectifier, two 12AX7 and a third smaller tube for tremolo.

Probably 2 x 5 watts output judging the size of the small OT.
3 inputs and a pair of RCA jacks as speakers outputs.

PXL_20240819_231848855.RAW-01.COVER.jpg

PXL_20240818_134319126.RAW-01.COVER.jpg

PXL_20240818_134525249.RAW-01.COVER.jpg

PXL_20240818_134557906.RAW-01.COVER.jpg

I plan on reusing the PT, tube rectifier and 6V6s into a push pull configuration with a single 5E3 Hammond replacement output transformer.

The tube layout gave me a little headache with organizing the components layout. And after a few iterations I have settled on a SSS style For the preamp.