Recommendations needed for designs of PP pentode strapped as Triode - Page 3

BHD · 22nd October 2004, 02:22 AM

Quote:

There's the Minnesota Audiophile Society

Oops, it's actually the Audio Society of Minnesota. (We're not the Judean People's Front, we're the People's Front of Judea!)

Their website is here:

http://www.audiomn.org/index.html

The Pavek Museum site is here:

http://www.pavekmuseum.org/

Wodgy · 22nd October 2004, 03:04 AM

Quote:

Originally posted by percy
That is re-assuring. I wish the PP-2CS was available, then I wouldn't ask anything else from life ever

Have you emailed Allen? I'd be surprised if he didn't share the circuit with you, unless his attitude about this has recently changed.

planet10 · 22nd October 2004, 05:44 PM

The special bits of Allen Wrights amplifier is the front end... this can be mated with a whole range of output stages... i'm building an EL84 version. Just take his front end and the PP output stage from your choice of amp...

The deluxe version of the amp would also use a constant current source on the cathodes of the output stage & use a SuperReg for the B+ of the diff stage (i'm going to use that same B+ on my output stage as well -- adequately heatsinked Allen says the SuperReg can deliver 3/4 of an amp.

dave

percy · 22nd October 2004, 08:49 PM

Any thoughts on this one ? -
http://www.triode-systems.com/circui...88-circuit.png
(although B+ and other voltages are not shown in the circuit)

This is a WAD (World Audio Design) and it was called the KAT88. Their current 6550 line followed their KT88 line.
(I wonder why? lower costs?)

Has anyone had any experience with this ?

Wodgy, yes I have emailed Allen. No response yet.

planet10 · 22nd October 2004, 09:03 PM

Quote:

Originally posted by percy
I have emailed Allen. No response yet.

Be patient, he is a one man show and sometimes is tied up...

dave

22nd October 2004, 05:44 PM	#23
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	The special bits of Allen Wrights amplifier is the front end... this can be mated with a whole range of output stages... i'm building an EL84 version. Just take his front end and the PP output stage from your choice of amp... The deluxe version of the amp would also use a constant current source on the cathodes of the output stage & use a SuperReg for the B+ of the diff stage (i'm going to use that same B+ on my output stage as well -- adequately heatsinked Allen says the SuperReg can deliver 3/4 of an amp. dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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22nd October 2004, 08:49 PM	#24
percy diyAudio Member Join Date: Apr 2004 Location: MN	Any thoughts on this one ? - http://www.triode-systems.com/circui...88-circuit.png (although B+ and other voltages are not shown in the circuit) This is a WAD (World Audio Design) and it was called the KAT88. Their current 6550 line followed their KT88 line. (I wonder why? lower costs?) Has anyone had any experience with this ? Wodgy, yes I have emailed Allen. No response yet.

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