Marantz CD63 & CD67 mods list - Page 1848 - diyAudio
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Old 30th September 2012, 08:50 AM   #18471
avr300 is offline avr300  Denmark
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Yes, those are the 47nF non polar caps, CD05 and CD06. Either do:

1. Leave those out and replace the corresponding CD04/CD07 with your BG's
2. Put the CD05 and CD06 back in again and replace the CD04/CD07 with your BG's

Last edited by avr300; 30th September 2012 at 09:00 AM.
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Old 30th September 2012, 08:51 AM   #18472
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Those are small value ceramic caps. My philosophy has been to replace those with silver mica if practically possible, otherwise leave well alone...
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Old 30th September 2012, 09:08 AM   #18473
UV101 is offline UV101  England
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Cd05 and cd06 should be removed allowing cd04 and cd07 to be moved closer to the dac. You can then tag surface mount 100nf across the legs under the board.

Lots of people prefer not to use the 100nf caps when you are using black gates.

The golden rule is to get the caps as close to the pin you are decoupling.
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Old 30th September 2012, 09:10 AM   #18474
UV101 is offline UV101  England
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I thought you'd removed the bypass caps across your BG's Ben?

X7r or c0g or even better PPS would be suitable but I'm not sure I'd use mica on the psu rails??
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Old 30th September 2012, 09:17 AM   #18475
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If you're just starting out, I would stick to swapping like-for-like. You're on very thin ice replacing ceramic caps with Black Gates. My experience has been that Black Gates are a good swap for power supply (especially analogue) if you can get them, and silver mica are great alternatives for ceramic. Mundorf AG are great for PSU and Silver-Oil for signal coupling.
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Old 30th September 2012, 09:25 AM   #18476
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Ian - I've pretty much given up on bypass caps across Black Gates in my system except the main smoothers in my amp which are 80v 10,000uF FK - I have 100v 100uF FKs tagged across those right at the load. I tried lots of other caps there but only the 100v 100uF FKs improved the sound.
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Old 30th September 2012, 09:32 AM   #18477
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I've tried X7R and mica on everything where the mica makes sense, and mica wins in my book. I have bags of Wima and X7R bypass caps sitting around but I'm much happier with the sound without them.
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Old 30th September 2012, 09:47 AM   #18478
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I bought Mundor AG 4700/40v for c803/804. But it is too big to fit. Do you have suggestion to fit those Mundorf in those positions and as well I bought 3300/16v Elna silmic for C814 again the lead is to thick to go inside the hole. Do you have any suggestions?

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Old 30th September 2012, 05:57 PM   #18479
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Previous comment made no sense, sorry - please disregard. Where's the beer smiley?
I haven't used silver micas as bypass caps, but I have swapped all original ceramic caps for micas where possible.

I fitted my Mundorf caps by soldering short lengths of thinner gauge wire onto them (Kimber TCSS)
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Old 30th September 2012, 06:37 PM   #18480
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Default cap mounting

Quote:
Originally Posted by badrisuper View Post
I bought Mundor AG 4700/40v for c803/804. But it is too big to fit. Do you have suggestion to fit those Mundorf in those positions and as well I bought 3300/16v Elna silmic for C814 again the lead is to thick to go inside the hole. Do you have any suggestions?

Thanks
Badri
Drill the pcb with a small drill in a dremel, Thats what i did to mount the pana tsups. 22,000 uf.
alan
The values your using are bit small, larger caps make more inpact on the bass. The machine runs better too.
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Last edited by bikeral10; 30th September 2012 at 06:41 PM. Reason: more info
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