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Old 1st June 2012, 05:55 PM   #1
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Default Recapping Forte 1a any suggestions

Just inherited a Forte 1a amp from my Dad. It came out in 1990 so probably needs electrolytics replaced. Any suggestions for Brand of caps. Also any parts upgrades while amp is apart. Thanks.
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Old 2nd June 2012, 09:27 PM   #2
6L6 is offline 6L6  United States
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Can you post some photos of the internals? Most specifically the big PSU caps?
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Old 3rd June 2012, 06:33 AM   #3
dejanm is offline dejanm  Austria
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Panasonic electrolytics are very good value and they will do the trick in most cases. For a bit more money you can go with Mundorf AG to get a bit more fidelity. If you just got the bonus for a last year results of your company and you are thinking "Oh God, what can I buy that will please me after I just bought my new Ferrari ...", you can go with Jensens - really good but expencieve ...
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Old 5th June 2012, 03:46 AM   #4
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I believe the caps in the amp are Aerovox 45v,24000uf.

I can't any caps this big in 45v. Here is a link to what I believe are BHC Aerovox in 63v, 24000uf.

Can someone point me to some of the brands mentioned in the previous post in suitable values. These above are 20% tolerance. Is that acceptable?

Thanks.
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Old 5th June 2012, 03:47 AM   #5
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Oops forgot the link.

http://www.newark.com/bhc-components...63v/dp/01N5312
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Old 5th June 2012, 09:15 AM   #6
Zen Mod is offline Zen Mod  Serbia
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just go for them , if you can squeeze them in and if price suits you

BHC are premium caps

btw - it's wise first to ask Steve (ApexJr) does he have something for your needs
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Old 8th June 2012, 02:29 PM   #7
6L6 is offline 6L6  United States
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My sincere apologies to the OP, he sent me some photos to look at and post here, and I didn't get a chance to do it before the busiest week of my year... anyway, here are some photos of the caps for those who are interested.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

The biggest concern I would have (other than an appropriate voltage and capacitance rating) is dimensions. The clamp won't work with a bigger diameter at all, although somewhat smaller is workable. Also make sure that the replacement isn't significantly taller than the originals. (Unless you have lots of room above the caps and under the top plate.)

Last edited by 6L6; 8th June 2012 at 02:34 PM.
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Old 8th June 2012, 09:14 PM   #8
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Default Recapping Forte 1a

I measured and believe the BNC 63v, 22000 are identical in size to the originals. Can anyone point me to the appropriate high-speed bridge rectifiers?
IRC or Vishay/Sprague.
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