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In Reply to: Re: Single 45 Amp question and pics posted by Perseo on March 1, 2007 at 05:08:29:
. . . so maybe you have already beefed that up vs. the schematic.If you are thinking 2A3 for more oomph out of your amp, I suggest first trying to eek more power out of your 45s, through more voltage gain (and perhaps more drive current).
If 280v is all you have at the 45 plate, perhaps you could apply some negatve bias to the 45 grid, with less resistance in the cathode, so that through combination bias you would have a full 250v from the 45 plate to cathode.
Follow Ups:
You are right about the beefy tranny in the pic. (good eye for detail). This chassis I had origionally built for a PP 6L6 amp.I realized that I didn't need so much power and changed it to a 45 amp. I already had the tranny mounted there and it looked so good that I left it and only used the 6.3v and 5v taps. The actual hi voltage tranny is down below.
and would make it appear that you don't really need a lot more power.
Yes my 45 will reach live music level and the 2A3 will reach concert level. More power would be rediculious.
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