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Old 5th May 2005, 02:27 PM   #1
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Default crossover caps. bipolar electros then solen then what?

Hello All,

I am upgrading some speaker crossovers and an considering Solen fastcaps because of the price.

What would be the next 'step-up' in quality after Solen?

Any other suggestions for affordable film caps with good performance?

Thanks

KevinLee
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Old 5th May 2005, 02:41 PM   #2
Magura is offline Magura  Denmark
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PP in oil, or PP in nitrogen if you want the lowest loss factor caps around......counting out PTFE in nitrogen

Magura
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Old 5th May 2005, 02:56 PM   #3
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Magura,

If PP is the dielectric, what is the use for oil and N?

Kevin,

Unfortunatly there are no big film and foil caps available for a resonable price.

If you can't get film/foil ones get metalized. Poliprop is a good dielectric, then you have PTFE and then GoreTex (foamed PTFE).

Solen are fine, but try to get the originals from SCR (who makes them for Solen) they are usualy cheaper.

Hugo
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Old 6th May 2005, 01:59 AM   #4
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Old 6th May 2005, 11:18 AM   #5
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Default Re: crossover caps. bipolar electros then solen then what?

Quote:
Originally posted by KevinLee
What would be the next 'step-up' in quality after Solen?

Any other suggestions for affordable film caps with good performance?
Auricap is a big step up, but a fair price leap too. You won't mind the price after you hear them.
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Old 6th May 2005, 11:23 AM   #6
DirkD is offline DirkD  South Africa
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I have found the Solen film and Foil caps (the white ones) to be very good and not that expensive, You would have to get them from Solen though.

Dirk
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Old 6th May 2005, 12:15 PM   #7
00940 is offline 00940  Belgium
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You can also get industrial Motor Run MKP caps. Cheap and good sounding. See here for some tests on crossover caps : http://home.versatel.nl/geenius/Cap.html .

Such caps are also often on ebay too.
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Old 6th May 2005, 06:36 PM   #8
Magura is offline Magura  Denmark
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PP in oil from Vishay have given me the best results for filters so far, I haven't had time to experiment with the Siemens PP in nitrogen yet.

http://www2.hififorum.nu/forum/topic.asp?TOPIC_ID=38453

Look at the pic like 2/3rd's down the page.

Magura
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Old 6th May 2005, 06:49 PM   #9
Magura is offline Magura  Denmark
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http://www.briangt.com/gallery/magura/PICT0001

This is the theoretically best cap possible. The loss factor is lower than anything else AFAIK.

Magura
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Old 6th May 2005, 07:39 PM   #10
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Magura,

What would be the ESL on those beasts?

The silver ones have oil probably to dissipate some heat, as they are usualy used in pulse or motor aplications, just like the used in tesla coils. The oil is not used as dielectic.

The siemens have N2 inside as dielectric or to prevent corona? Quite interesting... Do you know where I can find more info on them?

Regards,

Hugo
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