What to do with 2x Stancor A3830?

El Zombre · 25th March 2007, 07:13 PM

20W max out, 5k primary, I think.

I have plenty of guitar amps and related tubes, some radio tubes, too.
I was thinking of building my face hifi amp with these transformers. Any suggestions for a schematic?

Thanks in advance,
D

sorenj07 · 25th March 2007, 07:29 PM

5K is a nice medium impedance that would work with a low-powered 6L6GT (no need for GC) or EL34 schematic. Alternatively, you could probably use a couple of 6GW6's if you're careful. They're TV sweep tubes with a plate dissipation of around 17W. Another idea is to use the Russian 6P3S tube, it's kind of like a 6L6GT with a plate dissipation of 18W or so.

As for driving the tubes, I'd suggest the venerable LTP, either cathode-resistor biased or with a CCS, most likely followed by a driver stage using low-Ra tubes like the 12BH7 or some such.

What does your budget look like?

El Zombre · 27th March 2007, 01:14 AM

Thanks, sorenj07.

But ... is there some already worked out schematic that can be recommended?

I've found this site to be pretty helpful, but I'm a bit weary of building from scratch as this is my first build. Oh yeah, and the full specs for the Stancor A 3830 are linked below the useful design link - too many choices, ack!!

Designing SE hi fi amp: http://www.tubes.mynetcologne.de/roe...ematics_e.html

Stancor A3830 specs:
http://members.cox.net/dalehcook/rad...instruct.shtml

25th March 2007, 07:13 PM	#1
El Zombre diyAudio Member Join Date: Mar 2007	What to do with 2x Stancor A3830? 20W max out, 5k primary, I think. I have plenty of guitar amps and related tubes, some radio tubes, too. I was thinking of building my face hifi amp with these transformers. Any suggestions for a schematic? Thanks in advance, D __________________ Everything I need to know I learned from catching smart people and eating their braaaaains...

27th March 2007, 01:14 AM	#3
El Zombre diyAudio Member Join Date: Mar 2007	Thanks, sorenj07. But ... is there some already worked out schematic that can be recommended? I've found this site to be pretty helpful, but I'm a bit weary of building from scratch as this is my first build. Oh yeah, and the full specs for the Stancor A 3830 are linked below the useful design link - too many choices, ack!! Designing SE hi fi amp: http://www.tubes.mynetcologne.de/roe...ematics_e.html Stancor A3830 specs: http://members.cox.net/dalehcook/rad...instruct.shtml __________________ Everything I need to know I learned from catching smart people and eating their braaaaains...

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25th March 2007, 07:29 PM	#2
sorenj07 diyAudio Member Join Date: May 2006	5K is a nice medium impedance that would work with a low-powered 6L6GT (no need for GC) or EL34 schematic. Alternatively, you could probably use a couple of 6GW6's if you're careful. They're TV sweep tubes with a plate dissipation of around 17W. Another idea is to use the Russian 6P3S tube, it's kind of like a 6L6GT with a plate dissipation of 18W or so. As for driving the tubes, I'd suggest the venerable LTP, either cathode-resistor biased or with a CCS, most likely followed by a driver stage using low-Ra tubes like the 12BH7 or some such. What does your budget look like?

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