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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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I have had an amp builder (who shall remain nameless) try to convince me that, when using only one triode of a dual triode such 12AU7/12AX7, with the filaments run in 6.3 parallel, it is necessary to use pins 6,7 and 8 to reduce hum.
In other words, he claims using pins 1, 2 and 3 (as opposed to pins 6,7 and 8) will induce hum.
A 12A_7 has two identical triodes, so this makes no sense to me.
Am I nuts, or is the amp builder nuts?
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Topic - Dual Triode Wiring and Hum Question - baileyler 07:54:14 04/27/12 (12)
- RE: Dual Triode Wiring and Hum Question - Triode_Kingdom 11:19:11 04/27/12 (6)
- RE: Dual Triode Wiring and Hum Question - baileyler 11:31:33 04/27/12 (5)
- Reference to this phenomenon mentioned in AX84 forum: - Triode_Kingdom 13:00:27 04/27/12 (4)
- RE: Reference to this phenomenon mentioned in AX84 forum: - baileyler 14:13:08 04/27/12 (3)
- RE: Reference to this phenomenon mentioned in AX84 forum: - Triode_Kingdom 15:32:23 04/27/12 (1)
- RE: Reference to this phenomenon mentioned in AX84 forum: - baileyler 16:32:20 04/27/12 (0)
- Are you really using AC on the heaters? - Chris O 15:02:38 04/27/12 (0)
- RE: Dual Triode Wiring and Hum Question - deathtube 667 09:25:58 04/27/12 (0)
- "Am I nuts, or is the amp builder nuts?" Well, this is an Asylum. - Chris O 08:23:56 04/27/12 (3)
- Tis the old saw, correlation is NOT causation. Has tripped me up way more than once.~nT - Cleantimestream 10:34:58 04/27/12 (0)
- RE: "Am I nuts, or is the amp builder nuts?" Well, this is an Asylum. - baileyler 08:30:15 04/27/12 (1)
- RE: "Am I nuts, or is the amp builder nuts?" Well, this is an Asylum. - Chris O 08:36:08 04/27/12 (0)
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