Location: Middlesex, UK
Posts: 4,482
I'm Alex.
A few years ago, my cosmetically immaculate Radford ZD50 was feeding B&W DM5's (not that loud), when all of a sudden one channel went dead.
The ZD50 had thrown a wobbly and put heavy DC into one speaker. This is despite it's protection devices.
Fortunately, the 2A fuse in the DM5 blew, speaker was fine after fitting a new fuse. Amp still needs looking at.
Spendorman