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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: Small IDHT tube cathode bypassing posted by twystd on July 6, 2015 at 14:14:19:
I spent a whole day at one point with a huge stack of capacitors, sitting on the carpet linking them up in various combinations. All possible combinations sounded worse than none, even though there was clearly an impedance mismatch which was far from ideal. At that point I gave up.
Soon after I discovered filament bias with the 26 tube I was using, and life just got better and better from that point, which is now quite a few years ago just after Thomas Meyer started telling us about his filament bias experiments. I built a 26 preamp with a LL1660 and filament bias, then the Coleman regs came out in their first version and it got better still, then several updates of the Coleman regs came out and here we are today. I now use the 4P1L in place of the 26.
Going back to cathode bypasses for me would be like living in a mud hut.
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Follow Ups
- I agree - avoid bypasses like the plague - andy evans 15:26:32 07/07/15 (3)
- RE: I agree - avoid bypasses like the plague - drlowmu 23:14:11 07/09/15 (0)
- RE: I agree - avoid bypasses like the plague - twystd 18:04:16 07/07/15 (1)
- Yes - filament bias on outputs doesn't go much beyond 4P1Ls - andy evans 06:59:56 07/11/15 (0)
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