Monkeymatic Tamalpais combo sn#2

[Gainzilla]

Been watching your progress here. Really cool build!

A couple questions, and apologies if I missed it. Are you using the transformers you sourced from your friend for this, and are you sticking to his recommended voltage of 350v or whatever it was?

Cheers!

-Bryce

[xtian]

Thx Bryce! Yes, used one of the 6k Schumacher OTs. I have about 390 on the plates. I used a MOSFET B+ dropper with a 50v Zener to dump some voltage from the OEM Fender Hot Rod Deluxe PT. I'm getting just shy of 30 watts clean.

[Gainzilla]

Oh, perfect! I've got a HRD carcass and something like this could be a cool project.

Funny, but the more I read, the more it seems like modern tubes just don't sound as good at higher voltages. Lowering the b+ was the only way I could tame the angry shards of broken glass tone in my p/p el84 amp.

Thx for the info!

[xtian]

Full battle dress applied (new faceplate from indcom.graphics -- formerly PanelCraft, Inc.) and rear panel with...mismatched...black tolex.

[M Fowler]

Looking very good.

[stephenl]

Where did you get the power entry pcb w/ the mov's?

[xtian]

Good question, Steve. I think....it came from a Bugera. But really no idea. It's been in my parts pile for a while.

[stephenl]

Nice Recycle-age. I have a bin of random stuff like that, comes in handy sometimes.

[studiodunn]

Looks and sounds great!

[xtian]

She got a new, dark silver grille cloth. Ooh, pretty.

I put in a pair of Russian 6P6S (6n6c), 400 on plates, biased at 50%. What a cool mod! Amp was too loud to crank before, but with these tubes pushing against the ~7K primary, it's golden! Great distortion at volume with a really clear and tight bottom. Sounds like JTM45 circuitry (Tweed Bassman Normal channel, remember).

Gonna play it at local mid-sized club on Saturday.