my brother-in-law is the audio guy at his church.
he has a crossover board which separates low and hi freq audio
and sends it to a woofer or tweeter.
He says that visually he sees a blown cap which is 8.2 mfd 100 wvdc
I told him that if it was tube gear, I would use a 10 mfd @ 160 wvdc
but since this is solid state which I'm not familiar with I'm not sure.
Also the guy at radio shack told him to replace with exact value
Also, i'm thinking this is an electrolytic by size?
It has nothing to do with solid-state VS tube. It should be close to the correct value but 5% should be fine (and if it's stereo, get a bunch of them, find the two that match the best, and the replace the same cap in both speakers). If you can't find close matches, you can parallel them with little ones to get them as close as possible. For stereo, matching the values is a lot more important than getting the exactly right value.
It shouldn't be electrolytic for a crossover, although there are non-polarized electrolytics. Some manufacturers use use polarized electrolytics for AC applications, but it's a dumb idea. Just get regular film caps.