Vintage Asylum

RE: Did Marantz Ever Install Sprague 160P Caps in the 8B as Stock?

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In Reply to: RE: Did Marantz Ever Install Sprague 160P Caps in the 8B as Stock? posted by AA6U on December 24, 2020 at 14:02:01

it sounds like you are concerned with possible resale value. The early sprague's are probably compromised and I doubt you'll find any 8b's with the original coupling caps.

A later substitute that is better would be the Sprague or SBE 716p series of the same value.

https://www.mylespaul.com/threads/debunking-the-debunked-%c2 (Open in New Window)

Follow Ups:

RE: Did Marantz Ever Install Sprague 160P Caps in the 8B as Stock? - AA6U 09:05:43 12/26/20 (4)
Yes, resale value is my reason for asking the question. The 8b works now with the 160P black beauties but with low bass.

If the black beauties are not original, then I won't have any qualms about replacing them. That's why I'm trying to find out if they are original and hence my post.
Scott
- RE: Did Marantz Ever Install Sprague 160P Caps in the 8B as Stock? - Alpha Al 12:12:26 12/27/20 (3)
  You should be able to look at the solder joints to tell if they came in it.
  
  I recommend not using that amp with those Black Beauties, original or not.
  
  They're notorious for getting leaky or shorting. When that happens, it eats power tubes, and maybe an output transformer.
  - RE: Did Marantz Ever Install Sprague 160P Caps in the 8B as Stock? - AA6U 12:27:24 12/27/20 (2)
    Someone suggested that, but it looks like someone in the recent past unsoldered them to test them, probably for leakage, so that is not going to be revealing on their originality. However, that may be a sign that they were replaced.
    
    I'm hoping there is some Marantz 8b historian expert out there who would know if Marantz ever used the Black Beauties as stock in the 8b.
    
    However, I agree that those Black Beauties are probably ticking time bombs and can't sound as good as new polypropylene caps. I'm not interested in hearing what is purported to be "original" sound because old capacitors will never sound the same as when they were new.
    Scott
    - RE: Did Marantz Ever Install Sprague 160P Caps in the 8B as Stock? - Alpha Al 16:04:30 12/29/20 (1)
      Usually, if they have been unsoldered to test for leakage, it's done at one end only. The other solder joint should be original. No need to take then out completely for that.
      - RE: Did Marantz Ever Install Sprague 160P Caps in the 8B as Stock? - AA6U 17:43:39 12/29/20 (0)
        
        In Reply to: RE: Did Marantz Ever Install Sprague 160P Caps in the 8B as Stock? posted by Alpha Al on December 29, 2020 at 16:04:30
        
        That is how it appears.
        Scott

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