Tube Amps / Music Electronics
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|12/19/1999 5:23 PM|
||Re: Me too, what power tranny?|
You are right about the 270FX - I see 290-295V on the HT secondary with a line voltage of 117-118V. With a 5AR4, this means 365-370VDC which is a bit much for the EL84's. A workable compromise is to use the Sovtek version of the 5Y3. It is not a direct copy of the original - it uses an indirectly heated cathode and drops much less voltage. With the 270FX, I get around 345VDC which is a little kinder to the 84's. The amp still has decent transient response (the NOS 5Y3 has too much sag for my tastes) and the tubes seem to be happier. FWIW....
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