New SE With Triode Mode KT120/150

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Cressy Snr
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#526 Re: New SE With Triode Mode KT120/150

Post by Cressy Snr »

Paul Barker wrote: Sat May 01, 2021 11:10 am Steve Cresswell, might pay you to use youre front end on this present amp as it probably has close enough voltage amplification to the Bugle. But without trashing that amp.
Yes, I was thinking about that, when looking at various schematics. The EF80 looks to be a good driver for the 45 as far as I can make out. Decent voltage drive and good current drive as it exists right now in the present amp.
Sgt. Baker started talkin’ with a Bullhorn in his hand.
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andrew Ivimey
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#527 Re: New SE With Triode Mode KT120/150

Post by andrew Ivimey »

It's never been done!
Philosophers have only interpreted the world - the point, however, is to change it. No it isn't ... maybe we should leave it alone for a while.
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Nick
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#528 Re: New SE With Triode Mode KT120/150

Post by Nick »

Many years ago I built a Yamamoto A-08S 45 Amp kit for someone. That used a 717A as the driver valve, that was running as a pentode, you you could try the EF80 like that instead of triode strapped. The EF80 is not that dissimilar.
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steve s
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#529 Re: New SE With Triode Mode KT120/150

Post by steve s »

Or how about these.. more in line with the 45 regarding age.

http://www.r-type.org/exhib/aaa0625.htm
The tube manual is quite like a telephone book. The number of it perfect. It is useful to make it possible to speak with a girl. But we can't see her beautiful face from the telephone number
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