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Topic: Fender Amp Capacitors |
Liam Sullins
From:
Dayton, Ohio
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Posted 12 Nov 2020 3:30 pm |
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I've built two clones, a 6G16A Showman and a 6G16 Vibroverb and I've seen on original pictures of the chassis of the blue mallorys and yellow atoms look like they're polarized. Is this true? It got me thinking because I'm starting on my next build, a 64 Twin with JBLs, guitar and steel use.
I looked this up before and I forget now. I've never had a problem with them. I do know the electrolytics are polarized, duh. In this picture it has an "o" on these caps. Why?
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66 Sho~Bud Fingertip |
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Lee Warren
From:
Nashville, Tennessee, USA
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Posted 12 Nov 2020 4:18 pm
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Possibly to indicate the outer foil.
Lots of info on the interweb about outer foil. |
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Bill A. Moore
From:
Silver City, New Mexico, USA
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Posted 12 Nov 2020 4:25 pm
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| I don't think it's an issue with modern caps, there used to be a line on the "foil" side. There are "cork sniffing' caps now made that have the markings just like "vintage" caps, but my ears don't know the difference! |
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Ian Worley
From:
Sacramento, CA
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Posted 12 Nov 2020 6:34 pm
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| Bill A. Moore wrote: |
| ..."cork sniffing' caps... |
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All lies and jest, still a man hears what he wants to hear and disregards the rest - Paul Simon |
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Jeff Highland
From:
New South Wales, Australia
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Posted 12 Nov 2020 7:12 pm
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Supposedly make a differece noise wise. Quieter if you have the outer foil towards the anode on a coupling cap or towards ground for cathode bypass caps.
Interesting discussion here
https://el34world.com/Forum/index.php?topic=11427.0#:~:text=The%20banded%20end%20(outer%20foil,band%20is%20at%20%2B%20potential).
I haven't built an amp since I became aware of this but will try next time
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Duesenberg Fairytale
1949 Supro Supreme
1950 National New Yorker
2008 Highland Baritone Weissenborn
2020 Highland New Yorker.
2020 Highland Mohan Veena
2021 Highland Weissencone |
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Mike Marsh
From:
Florida, USA
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Posted 14 Nov 2020 8:26 am Yes, it matters!
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Jeff is correct! It matters The Outer foil has to be on the send side of signal flow to lower the noise level of the amp. This is more than personal opinion its science yo!
Thanks,
Mike
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Williams Series 700 4X5 |
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