In Reply to: RE: Harman Kardon TA5000X output transformers posted by Triode_Kingdom on May 5, 2016 at 07:59:39:
Full pentode mode "finals" are fine, when g2 B+ is regulated at a considerable fraction of anode B+. Max. open loop linearity is obtained.
GNFB, to linearize the O/P "iron" and achieve a satisfactory damping factor, is (IMO) in order.
Eli D.
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Follow Ups
- RE: Harman Kardon TA5000X output transformers - Eli Duttman 14:03:52 05/05/16 (17)
- RE: Harman Kardon TA5000X output transformers - Tubecase 05:22:09 05/06/16 (16)
- RE: You can go old school with VR tubes - DAK 11:36:01 05/06/16 (1)
- Plus: They Glow! - Triode_Kingdom 12:32:41 05/06/16 (0)
- RE: Harman Kardon TA5000X output transformers - Eli Duttman 07:52:33 05/06/16 (8)
- Is This Documented Somewhere I Don't Have to Join Their Crummy Forum? - Triode_Kingdom 10:07:43 05/06/16 (3)
- RE: Is This Documented Somewhere I Don't Have to Join Their Crummy Forum? - Eli Duttman 10:20:55 05/06/16 (2)
- RE: Is This Documented Somewhere I Don't Have to Join Their Crummy Forum? - Triode_Kingdom 10:30:21 05/06/16 (1)
- RE: Is This Documented Somewhere I Don't Have to Join Their Crummy Forum? - Eli Duttman 10:50:00 05/06/16 (0)
- Okay, Eli, I admit... No WAY can a.choke match that set-up, hmmm-nT - Cleantimestream 08:31:51 05/06/16 (3)
- Maybe, Maybe Not - Triode_Kingdom 10:18:35 05/06/16 (2)
- RE: Maybe, Maybe Not - Eli Duttman 10:25:20 05/06/16 (1)
- RE: Maybe, Maybe Not - Triode_Kingdom 10:38:07 05/06/16 (0)
- RE: Harman Kardon TA5000X output transformers - Triode_Kingdom 05:55:42 05/06/16 (4)
- PP 6L6 Small Signal Circuitry - Eli Duttman 11:21:27 05/06/16 (3)
- HK Amps - Triode_Kingdom 19:25:15 05/06/16 (2)
- RE: HK Amps - Eli Duttman 20:04:30 05/06/16 (1)
- RE: HK Amps - Triode_Kingdom 22:12:29 05/06/16 (0)