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Old 25th March 2007, 08:13 PM   #1
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Default 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
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Old 25th March 2007, 08:29 PM   #2
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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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Old 27th March 2007, 02:14 AM   #3
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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
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