Avantgarde Duo 2.2 Stoped working


I have a pair of Avantgarde Duo 2.2's where one channel went out.  The 225 sub still works, but both horns are out on one channel.  Do these have a circuit breaker of some sort?

Cheers
luc
I have Canary M-80 mono amps. Sound amazing with the avantgards. I run XLR IC’s to the subs and and have a set of Von schweikert ribbon speaker cables that run the mid and high horns. No jumper needed. In the light of day, I could not see that the 5UG tube was out and realized when I went to fiddle with it the tube was out. New tube and back in the game! Just in time for family movie night.
how long the tube worked?
it's probably time to check bias on all amps just in case.