Anyone try sharp cutoff pentodes in a p-p output stage?

aletheian · 28th November 2005, 12:26 AM

Just wondered if anyone has tinkered with the idea. I was considering wiring up some 6au6's or something like that in p-p class A just for kicks. I thought if anyone had a circuit, it would save me some load line math.

Eli Duttman · 28th November 2005, 01:08 AM

All sharp cutoff means is that the type is linear. Remote cutoff, which indicates variable gain, is to be avoided.

Power O/P from 6AU6s will be LOW. Take a look at the data sheet for the 7054. The 7054 is a 12 V. only heater automotive variant of the 12BY7.

aletheian · 28th November 2005, 01:19 AM

Quote:

Originally posted by Eli Duttman
All sharp cutoff means is that the type is linear. Remote cutoff, which indicates variable gain, is to be avoided.

oops... I should have said "signal pentodes" like EF184, 6au6, EF86, etc.

Miles Prower · 28th November 2005, 06:28 AM

Consider 6AG7's

28th November 2005, 12:26 AM	#1
aletheian diyAudio Member Join Date: Apr 2004 Location: Philly	Anyone trysharp cutoff pentodes in a p-p output stage? Just wondered if anyone has tinkered with the idea. I was considering wiring up some 6au6's or something like that in p-p class A just for kicks. I thought if anyone had a circuit, it would save me some load line math. __________________ Heghlu'meH QaQ jajvam!

28th November 2005, 01:08 AM	#2
Eli Duttman diyAudio Member Join Date: Apr 2004 Location: Plainsboro, NJ	All sharp cutoff means is that the type is linear. Remote cutoff, which indicates variable gain, is to be avoided. Power O/P from 6AU6s will be LOW. Take a look at the data sheet for the 7054. The 7054 is a 12 V. only heater automotive variant of the 12BY7. __________________ Eli D.

28th November 2005, 06:28 AM	#4
Miles Prower diyAudio Member Join Date: May 2005 Location: USA Blog Entries: 6	Consider 6AG7's __________________ There are no foxes in atheistholes www.dolphin-hsl.com

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