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Vintage threads from the first ten years
Killing hum in DIY Twin-Amp
 2/25/2000 12:51 PM |
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Keith | Killing hum in DIY Twin-Amp I'm encountering an annoying 60Hz hum in my project amp (5F8a). It disappears when I pull the cathode follower, but pulling the first preamp tube has no effect. I'm using star grounding, and have adjusted my lead dress several times. I don't think it's the heaters, because this problem cropped up rather recently. Overall tone in the amp is great otherwise. Can anyone shoot some ideas my way? Thanks! Keith |
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| Replies: |
| J Fletcher Bad tube? -- 2/25/2000 1:42 PM |