In Reply to: What capacitors to buy to refurbish old RCA amp? posted by maxhifi on February 9, 2016 at 16:58:34:
"The oil caps in those are fine but you say they are 8uf and the schematic says 14uf.The russian K40y-9 or the k42y will work well for the .1s. The 30uf lytic I would use a poly film cap there as these will outperform an electrolytic by a lot..There are good lytics but for that cap I would use a 35uf at 500v.
This amp has no global feedback that I can see.I would bump the cap's value after the choke if it's only 8uf and personally,I would ditch the 5R4 in favor of Schotkeys.For a single 5R4,you may be close to the limit with four 807s and a 6sl7 under dynamic conditions.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
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Follow Ups
- RE: What capacitors to buy to refurbish old RCA amp? - Michael Samra 00:31:27 02/10/16 (10)
- feedback - FenderLover 19:40:58 02/10/16 (0)
- RE: What capacitors to buy to refurbish old RCA amp? - maxhifi 06:24:57 02/10/16 (8)
- RE: What capacitors to buy to refurbish old RCA amp? - Michael Samra 11:59:58 02/10/16 (4)
- RE: What capacitors to buy to refurbish old RCA amp? - maxhifi 12:24:45 02/10/16 (3)
- RE: What capacitors to buy to refurbish old RCA amp? - Michael Samra 15:41:36 02/10/16 (2)
- RE: What capacitors to buy to refurbish old RCA amp? - maxhifi 16:00:44 02/10/16 (1)
- RE: What capacitors to buy to refurbish old RCA amp? - Michael Samra 16:17:18 02/10/16 (0)
- RE: What capacitors to buy to refurbish old RCA amp? - Eli Duttman 08:56:50 02/10/16 (2)
- Better rectifier tubes - maxhifi 09:14:58 02/12/16 (1)
- RE: Better rectifier tubes - Eli Duttman 11:58:16 02/12/16 (0)