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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Simple W5M inquiry re: testing and power cable rewire posted by cdbecker on November 22, 2005 at 12:03:27:
The first electrolytic filter capacitor in the stock W5M power supply is too large for the rectifier tube. A common problem with these amps which causes premature failure of the rectifier. I would use a 4ufd,600v oil cap as the first cap after the rectifier. They are large rectangular caps with ceramic or studs sticking up on the top. Also I would change the 12au7 to 6sn7GTB. Ray
"Polarities are seldom aware of their polarness." Prospero
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Follow Ups
- Re: Simple W5M inquiry re: testing and power cable rewire - grhughes 06:42:43 11/23/05 (6)
- Re: Simple W5M inquiry re: testing and power cable rewire - cdbecker 10:40:48 11/23/05 (5)
- If, you're a beginner I would stick with a kit... - grhughes 14:31:18 11/23/05 (2)
- Re: If, you're a beginner I would stick with a kit... - cdbecker 15:13:58 11/23/05 (1)
- There are many power pentodes that are similar to the KT66 BUT - grhughes 08:18:34 11/24/05 (0)
- So what are some tubes I should keep my eyes peeled for? - cdbecker 11:14:50 11/23/05 (1)
- I would first find an amp I could live with.. - grhughes 14:50:34 11/23/05 (0)
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