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Old 19th May 2010, 06:26 PM   #1
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Default Capacitor quality for crossover

Simple question : what capacitor any of you would advise for a high pass cross over at 10kHz. MKT or MMK type ?
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Old 20th May 2010, 05:40 AM   #2
rabbitz is offline rabbitz  Australia
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I'd suggest MKP. See this for some ideas of brands.
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Old 20th May 2010, 08:24 AM   #3
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Default Small precision

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I'd suggest MKP. See this for some ideas of brands.
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MKP or MKT - you write MKP but I never heard about MKP....
Thanks
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Old 21st May 2010, 07:40 AM   #4
rabbitz is offline rabbitz  Australia
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Metallised polypropylene (MKP) are the better type of caps to use in speaker crossovers. Like these:
http://www.soundlabsgroup.com.au/c/C...rs+-+Poly.html

Have a look around at the projects online and you'll find most use MKP caps and very few will use MKT and I've never seen one with MMK.
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Old 21st May 2010, 09:24 AM   #5
wwenze is offline wwenze  Singapore
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MKP is pretty common in commercial speakers also, examples M-Cap, Bennic, Solen
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Old 21st May 2010, 11:28 AM   #6
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Default Cap voltage ratings vs performance

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Capacitor voltage rating vs performance - The Classic Speaker Pages Discussion Forums
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Old 21st May 2010, 02:24 PM   #7
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Hi,

For what its worth, regarding Nicola'a 10kHz point, I received this helpful advice from Friedmann at Visaton last year,
(I hope its ok to quote him, 27/Oct/2009) :

>> "I think a peak at very high frequencies produced by a fullrange speaker is not audible. It is not comparable with a dome tweeter. In contrast a peak in the response of a dome tweeter is bothersome. I recommend testing the FRS8M and I am convinced that you will not miss a supertweeter. By the way, it is nearly impossible to add a supertweeter at such high frequency. The wavelength is so short that phase conditions are super critical. Our experience is that usually a good single fullrange sounds better than with additional tweeter." <<

but, only teenagers can hear past ~ 10kHz if they don't have hearing damage from iPods? Correct me hear, err here!
Regarding capacitor type at 10kHz, would it matter what was used? My question is: .. use as cheap as possible?

Grant
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Old 22nd May 2010, 02:57 AM   #8
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You need to find your own comfort zone between affordability and ultimate audiophile approval. Apex Jr has several large value metalized polypropylene caps cheap.
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Old 22nd May 2010, 06:01 AM   #9
rabbitz is offline rabbitz  Australia
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At 10kHz it's going to be a small cap so should not break the bank.

One thing that has to be considered is usually you get better results adding an inductor to the other driver (mid woofer?) which makes the summing, integration and hopefully phase better than a non filtered driver.
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Old 22nd May 2010, 06:48 AM   #10
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Intertachnik KP-SN tinfoil. Superb cap, not overpriced. Long burn-in.
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