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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Re: AC on 300B posted by drlowmu on May 7, 2007 at 21:35:18:
hi,
Even with a 2a3 I doubt it would work to use AC heating. In theory, the hum from the two ac-heated dhts should cancel somewhat when they are coupled in series as common-cathode stages. guess the driver overwhelms that effect since its amplified further.i'm going to try to stay with AC on the 300B. I still maintain that its not possible to get a really quiet amp with AC heating dhts (in SE) without some tricks. Maybe at 2.5v its tolerable.
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- Re: AC on 300B - zarniwoop 07:12:38 05/08/07 (0)
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