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Crossover capacitor voltage ratings....

Hello,   I recently started to replace my +20 year old electrolytic capacitors in my PSB Gold i's and have hit a snag.  There are four 100uf 100v bi polar electrolytic caps in each crossover that need replacing.  I found three prospective companies with "audio quality" caps that I may go with for the job.

*Audio Note Kaisei 100uf 100dcv*   or    *Elna RBD 100dcv*   or   *Mundorf (raw) ecap 100uf 100dcv*

Question is....the new caps I just listed all have a voltage ratings as "100dcv".   I assume that this refers to DC current.  So, would the "100dcv" ratings be good-to-go in the crossover where the current capacitor are rated simply as "100v"??  See the issue?  Or should I seek out a voltage on the new cap which is slightly higher?  Or even rated as "100acv"?  If that's the case the pickin's get slim indeed...    Wheeew...

Note:  if any opinions on the above capacitor's sound please chime in!!                Jon
chills
grannyring's avatar
grannyring
6,592 posts
 
Your speakers even if they are rather inefficient and you play your music very loud would be driven with 10-15 volts max. Most of the time only 1.5 - 4 volts. You are fine with 100 vdc!

I would not use electrolytics. If you want the best sound out of the speaker than use film caps. They will cost more and take more room. Check how much room you have and look up these caps for price and size;

solen fast cap
Mundorf Evo in oil
Clarity ESA or SA

These will sound much better if you have the room. The Mundorf Evo are smaller....

grannyring's avatar
grannyring
6,592 posts
 
100 volts AC = 140 volts or so vdc (1.4 x AC volts = DC volts)
georgehifi's avatar
georgehifi
10,312 posts
 
chills
Don’t forget Solen caps, one of the largest if not largest manufacturers. "Some" of the boutique caps are just re-baged Solens. If you do your homework you’ll see they are identical in every dimension, capacity, voltage rating, even the same lead length.

http://solen.ca/product-category/capacitors/

Cheers George

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