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swantzilla 18th April 2011 04:13 PM

Capacitor Question
 
I need a 210uf cap in my midrange crossover section. I know that a 150 and a 60 in parallel equals 210uf. How do audio frequencies react to parallel caps? Would there be a big difference if I went to one big cap compaired to the two smaller ones?

sofaspud 18th April 2011 04:48 PM

IMO no big difference.
How about a standard value 220uF that measures at the low side of its tolerance?

swantzilla 18th April 2011 07:40 PM

Quote:

Originally Posted by sofaspud (Post 2542615)
IMO no big difference.
How about a standard value 220uF that measures at the low side of its tolerance?

I am currently using a 150uf np and a 65uf np in parallel. I was just wondering if audio acted differently than RF.

Face 19th April 2011 12:33 AM

In my experience, splitting the values unevenly had a negative effect on imaging, YMMV.

DF96 19th April 2011 11:04 AM

Yes, audio is usually simpler than RF. Problems are only likely to arise if the capacitors are very different in value and very low ESR; then you might get a resonance.

Given normal manufacturing tolerances, I would just use a 220uF - perhaps selected if you are really fussy.


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