Hello,
I have a pair output-transformers coming from a Sherwood S-5000 amplifier. I found out that this amplifier uses a pair of 7189 (E84L) tubes in the output stage.
Because I would like to use these transformers for building a DIY amplifier, I was wondering if perhaps somebody can tell me what the operating points of the 7189 in this amplifier are?
I am most interested in how much current is going through each 7189 tube in the Sherwood S-5000?
BTW, does somebody knows the 'exact' primary impedance of these transformers and at what percentage UL-taps are taken?
Best regards, Tubecase.
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Topic - Sherwood S-5000 output-transformers - Tubecase 10:45:31 04/29/16 (20)
- RE:Please verify that both OPTs have the same model number. - DAK 19:23:22 04/29/16 (6)
- RE:Please verify that both OPTs have the same model number. - Tubecase 05:55:16 04/30/16 (2)
- RE:Please verify that both OPTs have the same model number. - DAK 09:08:55 04/30/16 (1)
- RE:Please verify that both OPTs have the same model number. - Tubecase 09:24:22 04/30/16 (0)
- His are the 7189s because he said they have the UL tap - Michael Samra 01:08:27 04/30/16 (1)
- RE: His are the 7189s because he said they have the UL tap - Tubecase 05:58:02 04/30/16 (0)
- RE:Please verify that both OPTs have the same model number. - Eli Duttman 20:08:54 04/29/16 (0)
- Sherwood S-5000 #B920J4 output-trans per Sam's Photofax - Interstage Tranny 17:35:34 04/29/16 (1)
- RE: Sherwood S-5000 #B920J4 output-trans per Sam's Photofax - Tubecase 05:50:24 04/30/16 (0)
- RE: Sherwood S-5000 output-transformers - Eli Duttman 12:36:08 04/29/16 (10)
- RE: Sherwood S-5000 output-transformers - Tubecase 05:20:13 04/30/16 (4)
- RE: Sherwood S-5000 output-transformers - Eli Duttman 19:32:39 04/30/16 (1)
- RE: Sherwood S-5000 output-transformers - Tubecase 11:52:29 05/01/16 (0)
- 7189/ 6P14P-ER - geezerrocket 09:02:20 04/30/16 (1)
- RE: 7189/ 6P14P-ER - Tubecase 09:31:03 04/30/16 (0)
- I like the Tri/pent for those trafos as there are no surprises. - Michael Samra 01:18:45 04/30/16 (4)
- RE: I like the Tri/pent for those trafos as there are no surprises. - Tubecase 06:23:30 04/30/16 (3)
- RE: I like the Tri/pent for those trafos as there are no surprises. - Eli Duttman 10:44:25 05/01/16 (0)
- RE: I like the Tri/pent for those trafos as there are no surprises. - Eli Duttman 19:16:26 04/30/16 (1)
- RE: I like the Tri/pent for those trafos as there are no surprises. - Tubecase 12:03:52 05/01/16 (0)