Good listening, Lee. Re the Sawallisch recording, which I don't know, an outstanding collection of similar repertoire which you should enjoy is the classic Kondrashin performances, available
here at dirt-cheap prices.
Oh, and as to the M80s, it would appear that since one tweeter works, it isn't the treble section of the crossover, but more likely the silent tweeter itself or a loose wire connecting it to the crossover. Since Axiom will send you another speaker, the exact cause is moot as far as you're concerned. Enjoy that great music, but I hope that you don't like it better with just the one tweeter!
