The Amp Garage

Would anyone happen to know what Power Transformer(s) HAD used for the #5 SSS?

TIA

Steve, thanks for replying to this thread and correcting me. Glad Apex is still around. I’ll be contacting you .

I’m almost certain awhile back Steve mentioned he was going to be closing shop. Hopefully I’m wrong

Thanks

With Steve @ Apex now gone, where is everyone getting their wire from?

TIA

[quote=xtian post_id=378235 time=1507593147 user_id=8493] CC are older technology, prone to drifting in value, decaying over time, and being noisy. CF and MF are more stable, more accurate, less noisy. Why would you want to use CC? Nostalgia? Mystic Mojo? [/quote] Back when I worked on vintage Fende...

Is Carbon Comp resistors undesirable in D-amps? I always see a mix of CF and MF, but rarely CC.

What gives?

[quote="sergio"]Take in mind you will be always in Class AB2 with that CF dc coupled , with bot AX and AT type. I used AT for an experiment and I like it. Bias resistors value changed also!! S.[/quote] Sergio, thank you. I'm really starting to believe that there are more well suited tubes for CF's t...

[quote="sergio"]I used an RFT 12AT7 NOS in CF stage , good choice!
S.[/quote]

That's what I would think. AT7's offer much more current to drive a CF stage,so why do many amps call for the AX7?

I'm gonna try a few different brands...mostly NOS. Do they benefit if they have matched sections?

Mhartman, thanks. Would that be the current production Tung Sol?

splgeo..thanks for the info . Anyone else care to comment? Maybe some folks here who have built an SSS w/CF

Oh..sorry.

SSS

Are there certain brands (NOS or current production) of 12ax7 that perform well as CF? Long or short plates matter?

Lovely....