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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: "you generate waste heat, but the tube heaters will not fail prematurely." posted by Eli Duttman on May 20, 2012 at 19:22:28:
Perhaps somewhat oddly enough, finding those low µF values are becoming an issue.
As I mentioned, I ordered a couple of SDS cap boards for the MkIII's, which run pairs of caps in series to cover the high voltages. I found it difficult to locate low µF caps to use, even though values are halved. The lowest I could find in the Nichicon KX were 56 µF @ 450V.
I could use a 20µF oiler, but the MkIII chassis doesn't leave much room for big caps, chokes, etc.
The bottom line is that there is a lot I could do with these, but I've read a many Asylum posts regarding these amps. Unless I'm willing to move the output transformers to a larger chassis, add a new input circuit, and completely re-do the power supply, it seems pointless.
As one poster opined some years ago: "I've done about every mod there is to the MkIII's. Sometimes I think I liked the sound of them better when they were stock."
Unless they overwhelm me when I get them running, I'll either use them occasionally, or sell them.
Thanks for the ideas, Eli. They are always appreciated!
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Follow Ups
- RE: "The 1st filter cap. can't exceed 20 mF" - 1973shovel 15:08:39 05/21/12 (4)
- RE: "The 1st filter cap. can't exceed 20 mF" - Eli Duttman 17:29:50 05/21/12 (3)
- Potato Masher - 1973shovel 05:18:05 05/22/12 (2)
- RE: Potato Masher - Eli Duttman 18:49:35 05/22/12 (1)
- RE: Potato Masher - 1973shovel 06:36:05 05/23/12 (0)
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