Hi All. Noob here. No particular electronics background (as you'll see), just a hobbyist.

I have a subwoofer that was doing nothing but cracking/popping, so I opened it up and found 3 leaking capacitors. I'm trying to buy replacements, but I don't know a damn thing about this, so I come to you.

The ones I ID'd are:
10 uf 35 volt 105 degree 11mm high
100 uf 16 volt 105 degree 11mm high
2200 uf 200 volt 105 degree vented 45m high

Questions are:
The first 2 I can find what appear to be matches for on this site

http://www.alliedelec.com/Search/Pr...576&SEARCH=8526576&DESC=SK100M035ST#tab=Specs

http://www.alliedelec.com/Search/Pr...ST&R=8527004&SEARCH=8527004&DESC=SEK101M016ST

but I can't seem to match up the third one.

How close do I have to be? I can find one that has the right numbers, but it's not vented. It's also shorter and the pins seem to be a little closer. Ones listed are 10mm apart. Mine are more like 12 mm apart.

http://www.alliedelec.com/Search/Pr...&R=8620995&SEARCH=8620995&DESC=SLP222M100C4P3

This one seems closer, but there's no image:

http://www.futureelectronics.com/en...oductID=228LBA100M2CGILLINOISCAPACITOR8223596

So, if the capacitance, voltage and temp match, it that good enough?

 

There is an image, sort of.
There is a link to the datasheet which does have the part dimensions.
http://www.illinoiscapacitor.com/search/main/pdf2/Series/LBA.pdf

 

Hi flat5

If that image is at all accurate, I don't think it'll do. It also lists the temp at 85 d, so that also doesn't match, but I don't know how critical that is.

btw I meant the last link. The SLP222M100C4P3 looks like more of a match

 

The capacitors in a speaker crossover operate with AC, not DC. So they must be non-polar.
The capacitors you found are polarized for operating only on DC so they will blow up if used with the AC signal of a speaker.

Digikey used to sell non-polar electrolytic capacitors.

 

Audioguru

Thanks. This is the stuff I need to know. Thinking on this a bit, it isn't really a crossover. It's a powered subwoofer. There's only one speaker.

What is polarized/non-polarized? These look like run of the mill cans with a stripe on one side. I thought that indicated polarity.