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Old 8th August 2007, 03:01 PM   #1
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Default PP EL34 circuit wanted

Hi everyone,

I have a freind who is in search of a quality PP EL34 amplifier to build.

He has recently owned an Eastern Electric M520 with NOS tubes and he really liked it. But having audio neurosis like I do, he is in search of something better, possibly a direct or transformer coupled design.

Any and all design ideas are welcome, for the goal is a quality amplifier that plays the music without layers of veiled component characteristics.

Thanks

Norris Wilson
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Old 8th August 2007, 04:25 PM   #2
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Do an EL34 search.
You will find a few LONG threads ! The topic was almost beaten to death . You will spend a lot of time sifting through those threads !
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Old 8th August 2007, 10:26 PM   #3
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hey-Hey!!!,
There is a lot to an amp, circuit, parts, layout. What sort of thing does your friend want? I'd suggest a low voltage, conservative Class A design with a beefy power supply. For the circuit, I'd suggest a two stage with plate-to-grid FB on the EL34's. It would deliver ~20W...
cheers,
Douglas
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Old 9th August 2007, 12:29 PM   #4
OzMikeH is offline OzMikeH  Australia
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This might be suitable. I just started reading it yesterday to learn how tubes work. There are 2 articles, Single ended and push-pull El34 amp projects written for Lunhahl. If you start with this you'll understand enough to tweak it afterward.

http://www.diyaudio.com/forums/showt...498#post470498

Mr Liang does an EL34 pp amp which would get you the tubes, chassis and transformers, you can rebuild it from there.
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