First, ALL the grungy-sounding resistors, caps, and magnetic hookup wire everywhere in the amp will be replaced with HIGH-quality stuff, so PLS let us not get drawn off topic in this thread.
The amp currently uses a quad of cheap, edgy-sounding (IMO) Solen FastCaps**, 47/630s, with no bypass caps, in the only capacitance following the choke which follows the 5U4G 'rectifier'*. See the link for the schematic diagram.
After considering many alternatives including motor-run caps, the current alternatives for that about-200uF of capacitance are as follows. Not included in the descriptions of the alternatives below are whatever small, HIGH-quality film-type bypasses I might use. Since all of these alternatives are affordable, price is not a factor.
1. Obbligatto film-and-oils, one 70uF plus two 47s plus a 33, totaling 197uFs.
2. WIMA 600VDC DC Link, rectangular, one-each 100uF, 60uF, and 40uF.
3. WIMA 700VDC DC link, cylindrical, one each 143uF and 59uF.
If you've had experience with any of these in poweramp PSs, I'd love to read about it.
* That's in quotes because it's doing no rectification, being fed with filtered DC.
** and if you like the sounds of these caps, I'll soon have 8 for sale, cheap! :-)
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Topic - A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - jeffreybehr 19:05:05 04/20/14 (31)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - Abacus Music 21:40:21 05/01/14 (3)
- Could we have some details on the amp(s)? Have you bypassed... - jeffreybehr 22:43:14 05/01/14 (2)
- RE: Could we have some details on the amp(s)? Have you bypassed... - charles1dad 00:25:28 09/16/14 (1)
- Indeed a long time. Actually, I've done nothing but bypass... - jeffreybehr 16:17:32 09/16/14 (0)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - Vincin 01:04:32 05/01/14 (1)
- 'As a first time moddler...'. What on earth gives you the idea that I'm... - jeffreybehr 10:23:37 05/01/14 (0)
- FWIW, I'll soon start work on the output-PS caps. - jeffreybehr 17:49:14 04/27/14 (1)
- RE: FWIW, I'll soon start work on the output-PS caps.t - charles1dad 07:52:18 04/28/14 (0)
- Consider new Jupiter COPPER FOIL caps - Jon L 18:01:43 04/25/14 (3)
- RE: Consider new Jupiter COPPER FOIL caps - SETdude 16:59:09 04/26/14 (1)
- RE: Consider new Jupiter COPPER FOIL caps - Jon L 22:39:54 04/26/14 (0)
- RE: Consider new Jupiter COPPER FOIL caps - RC Daniel 23:15:05 04/25/14 (0)
- Final? Hah! Two more alternatives...both Electronic Concepts' Unlytics. - jeffreybehr 14:53:47 04/23/14 (0)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - Stuben 09:04:18 04/23/14 (3)
- Mortgage my house? I know you're speaking figuratively, but all these alternatives... - jeffreybehr 15:22:40 04/23/14 (1)
- RE: Mortgage my house? I know you're speaking figuratively, but all these alternatives... - Stuben 14:37:42 04/24/14 (0)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - wheezer 09:51:32 04/23/14 (0)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - amioutaline? 06:09:42 04/23/14 (0)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - drlowmu 09:06:24 04/22/14 (1)
- The 600s are overspec'd by 75VDC and the 700s by 175VDC. (NT) - jeffreybehr 14:55:13 04/22/14 (0)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - Michael Samra 22:23:57 04/21/14 (0)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - morricab 12:34:56 04/21/14 (0)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - Salectric 08:58:06 04/21/14 (0)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - Diogenes 07:25:08 04/21/14 (6)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - Blackdog 19:39:55 04/21/14 (1)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - charles1dad 20:05:28 04/21/14 (0)
- Yup! But 'need' is a rather vague term. Some owners of these... - jeffreybehr 10:57:18 04/21/14 (3)
- RE: Yup! But 'need' is a rather vague term. Some owners of these... - charles1dad 19:10:50 04/21/14 (2)
- charles, I have NO idea what 8-Watt SET poweramp I'd prefer. The reviews led me to believe... - jeffreybehr 19:22:26 04/25/14 (0)
- RE: Yup! But 'need' is a rather vague term. Some owners of these... - RC Daniel 00:31:21 04/25/14 (0)
- RE: A final (I hope) question about main-PS (600VDC) caps for my Frankensteins - wheezer 21:57:26 04/20/14 (0)