RE: Not as different as they might seem...

Posted by Michael Samra (D) on August 30, 2016 at 16:51:13

In Reply to: Not as different as they might seem... posted by Triode_Kingdom on August 30, 2016 at 14:02:30:

I did a power and distortion test last night and it makes 55 watts but the distortion at that level with a straight 1khz signal in is out of slight and it looks just like a SET amp when it clips..The sinewave basically turns into a sq wave the at 55w..Now,the amp is stock with old filter caps as are thee original 12AU7 tubes.I could wire this amp as a pentode pretty easily by using a second choke to feed G2 screens.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken

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Follow Ups Full Thread

Topic - We were discussing the Fisher 50a which is pretty similar to the 55a - Michael Samra 21:12:51 08/29/16 (18)

one 12AU7 triode as bias voltage regulator - FenderLover 09:42:55 08/30/16 (3)

RE: one 12AU7 triode as bias voltage regulator - Michael Samra 13:41:56 08/30/16 (2)

Thanks! - FenderLover 20:35:50 08/30/16 (1)

RE: Thanks! - Michael Samra 11:27:33 08/31/16 (0)

RF Bypass - Triode_Kingdom 08:45:43 08/30/16 (12)

RE: RF Bypass - JKT 16:49:48 08/30/16 (8)

RE: RF Bypass - Triode_Kingdom 19:39:45 08/30/16 (0)

That what my guess in that it was for spike suppression. - Michael Samra 17:23:07 08/30/16 (6)

RE: That what my guess in that it was for spike suppression. - JKT 18:17:38 08/30/16 (5)

RE: That what my guess in that it was for spike suppression. - Michael Samra 19:51:16 08/30/16 (4)

RE: That what my guess in that it was for spike suppression. - JKT 20:17:55 08/30/16 (3)

I noticed on these amps... - FenderLover 21:04:39 08/30/16 (2)

This other article. - FenderLover 21:06:24 08/30/16 (1)

RE: This other article. - Michael Samra 11:22:52 08/31/16 (0)

THere is a difference in the 50a to 55a - Michael Samra 13:16:50 08/30/16 (2)

Not as different as they might seem... - Triode_Kingdom 14:02:30 08/30/16 (1)

RE: Not as different as they might seem... - Michael Samra 16:51:13 08/30/16 (0)

.67 is the demarcation line for choke loading... above .68 and is no longer choke input~nT - Cleantimestream 07:54:00 08/30/16 (0)

Follow Ups

RE: Not as different as they might seem... - Michael Samra 16:51:13 08/30/16 (0)

RE: Not as different as they might seem...

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