Replacing electrolytic caps in crossovers - what voltage rating to use? - diyAudio
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Old 29th November 2005, 01:03 PM   #1
Ruach is offline Ruach  Singapore
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Default Replacing electrolytic caps in crossovers - what voltage rating to use?

Hi guys,

I am replacing the 17-year old electrolytic capacitors in the crossovers of my Infinity Kappa 7 speakers.

These capacitors are rated at 100V.

Will it be ok if I were to use 63V or 50V capacitors as their replacement?

I am thinking of using Elna Silmics as replacements. 100uF Solens are too big and too expensive for me right now.

Appreciate your help. Thanks.
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Old 29th November 2005, 03:56 PM   #2
simon5 is offline simon5  Canada
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What's the impedance of the speakers and what's the power level you're playing with?

It would be way better to use 100V caps. You can make a 100V cap by using 4 of the 50V caps in series-parallel.
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Old 29th November 2005, 04:01 PM   #3
Ruach is offline Ruach  Singapore
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Thanks.

The impedence is between 4 to 6 ohms.

How do you go about getting a 100V out of 50V caps?

Do you connect - + + - ?
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Old 29th November 2005, 10:17 PM   #4
simon5 is offline simon5  Canada
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Let say you have a 100uf 100V cap.

With two 100uf 50V caps, - + + - will give you a 50uf 100V cap.
Then you parallel that with another pair to get back at 100uf.

What is the maximum power you plan to use with these speakers?
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Old 30th November 2005, 12:54 AM   #5
alfa147 is offline alfa147  Turkey
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you can use 63v 100mf capasitors.it is not problem with hi-fi amplifiers.But be careful about polarity.
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Old 30th November 2005, 10:56 AM   #6
rabbitz is offline rabbitz  Australia
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You are better off giving the eletrolytics the flick and using metallised polypopylene and even the ones cheaper than the Solens would be better than the original.
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Old 30th November 2005, 07:30 PM   #7
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Default caps value

So an 18uf + another 18uf dosn't =36uf unless you double that again?
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