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Old 8th May 2013, 11:40 AM   #11
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You all have been a great help, thanks.

Yes, I have a soldering iron, and should be able to (sloppily) replace them.

Lastly, does it matter what direction caps are installed?
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Old 8th May 2013, 11:42 AM   #12
Mooly is offline Mooly  United Kingdom
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Non polarised can fit either way, it doesn't matter.
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Old 8th May 2013, 01:10 PM   #13
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Do something; when you're ordering the electrolytics, get a couple of 0.47F papers (or polystyrenes, or what's available) 100V, and wire them in parallel. If those old caps have got hot enough to melt the plastic back like that, either you're getting too hot in there and you should replace the bass one at the top of your picture too (which will have dried out to a considerably lower value), or you've had RF instability and the inductance of the electrolytic has heated it up (All right, lousy explanation, but genuine possibility), in which case the paper will short out those frequencies.

Either way it's worth opening up the other cabinet before placing your order; you might well want to replace the caps in there, too.
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Old 8th May 2013, 01:17 PM   #14
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Great, Thanks!

Yup, I ordered enough to do both cabinets.
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Old 8th May 2013, 01:30 PM   #15
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Don't forget (after everything's tested) to glue the components to the board. There's a lot of vibration, which can easily break legs of capacitors if they're only held by solder.
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Old 12th May 2013, 02:55 PM   #16
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Originally Posted by DanophonicDan View Post
How can I tell if capacitors are bad?

If they are bad, what's the best place to order them from?
First with very low volume music playing just bypass them with a wire or an alligator-clip setup and see if any sound at all comes out of your midrange.

Yes it won't be properly crossed-over but at low volume and for a few seconds it wont hurt anything.

-If nothing comes out then start looking elsewhere for your problem.

Changing them out once everything is functioning again probably would't hurt and could be a nice upgrade.

I've found EAW to have really decent crossovers for PA speakers. My 153's seem to have a totally different one than yours does -far more components on a board mounted to the side wall of the cabinet -and none of those type of electrolytics
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