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Which one is the better design?
Which one is the better design?
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Old 28th April 2004, 01:04 PM   #1
FrancoB is offline FrancoB  Europe
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Default Which one is the better design?

Need some help deciding which amp would be the best choice.

http://www.worldaudiodesign.co.uk/pdf/kel80crt.pdf

http://www.plitron.com/pages/Products/Audio/circuit.htm

I would appreciate some help from the tube gurus.

TIA

Franco
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Old 28th April 2004, 05:12 PM   #2
Sch3mat1c is offline Sch3mat1c  United States
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Default Re: Which one is the better design?

Quote:
Originally posted by FrancoB
Need some help deciding which amp would be the best choice.

http://www.worldaudiodesign.co.uk/pdf/kel80crt.pdf
I don't like the unbalanced STP (short-tailed) but suit yourself.

Yikes, a cathodyne splitter running two pair! The only time I'd ever trust such an arrangement would be with +600V supply and a chunky triode, say 12B4, for the splitter. And then the drive requirements...

A pair of 6V6, sure, but no quads, not without a buffer (a.k.a. Williamson driver circuit). Although if voltage requirements are low I'd let a CF driver pass for the buffer (also escaping the unstable tendancies of the Williamson circuit).

Tim
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Old 29th April 2004, 07:05 PM   #3
sreten is offline sreten  United Kingdom
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I'm certainly not a tube guy technically.

But I do know the second design uses "ultralinear"
taps on the output transformer, and the first is a
"monoblock" design, very difficult to compare.

Personally my much less than guru opinion
would be go for the complete WAD package.

sreten.
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