I have the quintet micro system, driven by a Sony STR-DE845. I was jammin a little hard and the horns quit working, The only sound were coming out of the tweeter. I was wondering if there is a protection circuit, or if I over drove the and trashed my system. I did swap my rears to see if I fried my mid channel in my reciever and they worked fine. Is there anything I can do to check or troubleshoot. Or should I start shopping for a new pair?