On My quest for perfection, Over the week end I tried to Bi-wire my Dunlavy V's, with my 2- Classe CA 400 in monoblock configuration ( no vert or hor biamping yet) I DID everything right: Connect to the right terminal at both amp and speakers, Both amps in balanced/mono configuration, speaker jumper removed, using a seperate speaker cables( same make, same length) for bass and mid's. Here is what happened. The right speaker worked alright with the right monoblock. The left speaker made a lound sharp popping noise like little fire cracker! Scared shit, I disconnected the left speaker right away. Did some trouble shooting and put jumpers back on an ran single wired.Turned out that left amp channel fuses were blown on the left monoblock even though the channels were bridged. What might have happend? Do you think the mono switch on the left monoblock may not have engaged?