My brother-in-law has a pair of real nice Mirage OM-5 speakers with built-in powered subs. One of the subs isn't functioning, and neither of us is a very capable electronics guy. We checked for loose wires, but that's about the extent of our troubleshooting. I suspect the amp has gone bad, but . The closest Mirage repair place is 250 miles from us, and shipping isn't really an option with this beast. They're probably ~15 years-old, and I'm not sure Mirage even supports them anymore. Anybody know someone in the Baltimore area who fixes such things?