RE: SET 45

SET Asylum

Single Ended Triodes (SETs), the ultimate tube lovers dream.

In Reply to: SET 45 posted by lugnut1 on April 25, 2015 at 09:55:51:

For best performance, do a simple circuit. That means two stage and eliminate the cap couple.
That means a Morrison Micro, adapted to the Type 45 tube.
There are several of things you can do to update and improve the Morrison Micro. (1) Do NOT parallel sections of the 6SL7 as they will smear and "fight" each other. This means you need to double the value of both the Ra and the Rk, and attach these Rs to only ONE triode section. (2) Change out the 5V4G for a 5U4GB. ( 3) Change all the 1990's style SCR polyprop supply caps to the new and wider band WIMA DC LINK caps. (4) Bypass the Rk of the 6SL7 with multiple, decreasing value film caps, DynamiCaps are made for this. (5) Use a higher Ohms value Rk when converting from a 2A3 to a Type 45 in the output stage, (6) On the Final's tube Rk bypass, use multiple film caps, and NOT a single electrolytic as drawn, and (7) Use a 5K primary SE output, inexpensive ones made by EDCOR, HAMMOND, etc etc .
This little Type 45 amp will EAT all the other circuits you were contemplating, due to its simplicity. Its awesome.
Email me if you have additional questions, need help selecting parts and /or values. Glad to help.
Jeff Medwin

Edits: 04/25/15

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Follow Ups Full Thread

Topic - SET 45 - lugnut1 09:55:51 04/25/15 (12)

RE: SET 45 - David Lawrence 10:21:57 04/27/15 (0)

RE: SET 45 - tsingle999 06:31:50 04/27/15 (0)

RE: SET 45 - vinnie2 04:27:14 04/26/15 (3)

Me too! - amandarae 11:30:52 04/26/15 (2)

RE: Me too! - vinnie2 04:25:11 04/27/15 (1)

RE: Me too! - amandarae 13:54:45 04/27/15 (0)

RE: SET 45 - 91derlust 02:45:23 04/26/15 (0)

RE: SET 45 - Rick R 22:27:15 04/25/15 (0)

RE: SET 45 - drlowmu 16:22:02 04/25/15 (2)

RE: SET 45 - Frihed89 20:42:43 04/25/15 (1)

RE: SET 45 - drlowmu 21:11:26 04/25/15 (0)

RE: SET 45 - Frihed89 11:05:18 04/25/15 (0)

Follow Ups

RE: SET 45 - drlowmu 16:22:02 04/25/15 (2)

RE: SET 45 - Frihed89 20:42:43 04/25/15 (1)

RE: SET 45 - drlowmu 21:11:26 04/25/15 (0)

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