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Author Topic: PA Speaker crossover capacitor help  (Read 699 times)

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Phil B

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PA Speaker crossover capacitor help
« on: 16 December 2008, 14:52:02 »
A capacitor has popped in one of the band PA speakers, which is rated at 400W or thereabouts.

The cap is of the electrolytic, looks to be non-polarised, 100V, 15µF, 85°C and 5% tolerance flavour.

I'm having trouble finding one near to it, does anyone have one lying around or know of any good sites I can order one from?

Cheers
Phil
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Kevin Wood

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Re: PA Speaker crossover capacitor help
« Reply #1 on: 16 December 2008, 15:14:46 »
Maplin do a range of polypropylene capacitors that would be better than an electrolytic.  http://www.maplin.co.uk/Module.aspx?ModuleNo=393

Two 8 uf ones in parallel? Rated to 630v.

Kevin


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Kevin Wood

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Re: PA Speaker crossover capacitor help
« Reply #2 on: 16 December 2008, 15:15:57 »
Failing that, look for motor start capacitors, although not ideal for an audio application they might get you out of trouble.

I will, of course, have a rummage in the junk box later...

Kevin
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Phil B

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Re: PA Speaker crossover capacitor help
« Reply #3 on: 16 December 2008, 15:23:56 »
Mental block, changing it to polys never occurred to me for some reason, I blame seasonal stress!

Might as well do the stereo pair then I suppose

Thanks Kevin
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Kevin Wood

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Re: PA Speaker crossover capacitor help
« Reply #4 on: 16 December 2008, 15:25:53 »
Yep, might as well replace both. If one electrolytic has died the other won't be in great shape, and polys should be more reliable and sound better.

Kevin
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Phil B

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Re: PA Speaker crossover capacitor help
« Reply #5 on: 16 December 2008, 15:42:58 »
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Kevin Wood

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Re: PA Speaker crossover capacitor help
« Reply #6 on: 16 December 2008, 16:04:45 »
Should do nicely. :y

I did try Farnell but had trouble whittling the search results down to less than a couple of hundred. Forgot CPC was a little more user friendly.


Kevin
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