The voice coils probably overheated and started chaffing and eventually arced to ground this probably overheated and blew the output transistor(s) in one channel on your amp. You should get the amp repaired - the speakers will need new drivers but you might as well get new speakers as it won't be worth the cost to repair them.
musical fidelity a3.2 blown left channel, repair?
I was out of town a few weeks ago and returned home to find that my roommates managed to blow the right channel of my musical fidelity a3.2, in addition to the woofers on a pair of B&W DM302s. I don't know exactly what's wrong with the amp� but I'd be curious to see what some hypotheses are and if anyone has a good repair recommendation in NYC. I tried using a variety of cables/speakers and nothing could bring the left side back to life; the right side is still pumping out sound, presumably because the amp is dual mono. Still, I'm ignorant of what's actually going on and welcome advice/comments. Hopefully it's just a blown fuse or something, but if not, I'll be in the market for a new integrated amp.