GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Audio Discussions
In the Thread: How to get a LOT of SET power.

Post Subject: Can it be it?Posted by N-set on: 4/16/2011

Paul, I know NOTHING about pentodes. I looked at the curves:
at 1500V/300mA/-85V loaded with 3.2k will give a whooping 190W
with +/-85Vmax swing, staying in A1. At 2.4k this drops to 155W.
G2 @500V, eating 50mA of current(!)
But the linearity...???? The knee seems soft but the data are very sparse.

I'm wondering if 6E5P, choke loaded, DC coupled can drive it?
The is theoretically no grid current and the capacitances at LF do not matter
(anyway it's a HF tube)?
Then it would be a straight, DC coupled 2 stage
amp, as Romy wanted. The supply will be a but complicated: stacked 200V and 1500V
Seems people are trying it (although with a limited power in this case):

http://www.diyaudio.com/forums/tubes-valves/183163-gu-81m-tube-amp-schematics-3.html

I'm trying to see if this little monster has any following in audio...

I think I have a DC supply to power the heaters, they seem similar to 304TL.

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