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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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I'm recapping an original Dyna ST70, it has never had any work done previously.
I obtained an exact replacement for the quad filter cap. It is 30/20/20/20uF @ 525VDC.
The original is wired with the 30uF section directly to the 5AR4 rectifier tube, then after the choke is 20uF, which is the point feeding the finals.
My question: would it make sense to use 20uF at the rectifier tube, then 30uF after the choke? I have seen data regarding the maximum amount of capacitance on a 5AR4, but can't put my hands on it now. It seems less capacitance on the rectifier tube might increase reliability.
Any comments? Thx, Al
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Topic - Question about recapping a Dynaco ST70 - Alpha Al 13:13:47 07/10/14 (26)
- Thanks to all who responded - Alpha Al 12:55:29 07/11/14 (2)
- RE: Thanks to all who responded - Eli Duttman 18:07:14 07/11/14 (1)
- RE: Thanks to all who responded - airtime 09:33:56 07/13/14 (0)
- RE: Question about recapping a Dynaco ST70 - Eli Duttman 19:15:34 07/10/14 (0)
- RE: Question about recapping a Dynaco ST70 - Paul Joppa 17:03:37 07/10/14 (0)
- To answer your specific question... - Steve O 13:42:26 07/10/14 (13)
- RE: To answer your specific question... - Tre' 19:05:43 07/10/14 (0)
- RE: To answer your specific question... - xaudiomanx 17:50:41 07/10/14 (11)
- Pretty much agree... - Steve O 18:51:47 07/10/14 (10)
- It is not just the cap, the load matters as well, and the ST70 is very "loadie" - Chip647 09:10:42 07/11/14 (9)
- RE: It is not just the cap, the load matters as well, and the ST70 is very "loadie" - xaudiomanx 15:09:20 07/11/14 (8)
- RE: It is not just the cap, the load matters as well, and the ST70 is very "loadie" - Chip647 17:18:10 07/11/14 (0)
- RE: It is not just the cap, the load matters as well, and the ST70 is very "loadie" - Steve O 17:16:36 07/11/14 (6)
- RE: It is not just the cap, the load matters as well, and the ST70 is very "loadie" - xaudiomanx 17:36:08 07/11/14 (5)
- Yes, 2 5AR4s would do wonders, but it would also melt your stock power transformer - Chip647 18:23:06 07/11/14 (0)
- RE: It is not just the cap, the load matters as well, and the ST70 is very "loadie" - Steve O 18:14:51 07/11/14 (3)
- Steve O can you please supply link to D. Gillespie?? - johnmil 03:54:24 07/12/14 (2)
- Try this... - Steve O 05:24:11 07/12/14 (1)
- RE: Try this... - johnmil 07:05:53 07/12/14 (0)
- RE: Question about recapping a Dynaco ST70 - Lee of Omaha 13:26:41 07/10/14 (3)
- RE: Question about recapping a Dynaco ST70 - Tre' 14:11:02 07/10/14 (2)
- IIRC... - wheezer 11:51:46 07/12/14 (0)
- Yeah, you're right... - Lee of Omaha 10:04:41 07/12/14 (0)
- RE: Question about recapping a Dynaco ST70 - Michael Samra 13:25:13 07/10/14 (2)
- RE: Question about recapping a Dynaco ST70 - xaudiomanx 17:54:42 07/10/14 (1)
- RE: Question about recapping a Dynaco ST70 - Michael Samra 00:19:34 07/11/14 (0)
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