Does anyone know if Markbass cabs have a tweeter protection circuit?? I finally went to the Guitar Denter and tried some cabs. The 104HF 4x10 I tried had a non-functioning tweeter. Not a big shock on GC floor models of any brand. Still sounded really,really good. If I new that it was simply a blown fuse, I might fool the salespeople there into believing there is something majorly wrong and get a smokin' deal.(I've worked this exact same deal on another cab). Any info would be appreciated.