Does anyone know of any amps or has anyone ever built an amp that uses excessive plate voltage on new production EL34's? I am converting an amp that supplies 680V plates and 335V for screens. I plan to use a quad of them in pentode per channel with a load of 4.5k-6k ohm, but I'm concerned if the (new production) tubes can take it, and also if they will sound OK running at such low current.
thanks,
thanks,
They claim they can.
http://www.jj-electronic.sk//pdf/E34L.pdf
I've run them up to 500V in triode mode which exceeds its g2 rating without any smoke or flames.
Cheers,
Ian
http://www.jj-electronic.sk//pdf/E34L.pdf
I've run them up to 500V in triode mode which exceeds its g2 rating without any smoke or flames.
Cheers,
Ian
Ya know, I just thought of this -- BOI audioworks can match a set for a requested operating point. So, you could tell them you want to run them at 680V plate / 330V screen / I mA idle current (keep it within reasonable plate dissipation limits, of course), and they should be able to set you up with a couple quads tested for that voltage.
They've hooked me up with two very-well-matched quads of KT66s that I basically requested for use at max plate dissipation
They've hooked me up with two very-well-matched quads of KT66s that I basically requested for use at max plate dissipation
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