• You've probably already tried switching channels and positions to check it's not the amp or room position right? I managed to burn a coil in one of my PA speakers and it took a while to decide it was a problem with the coil. If you press lightly on the cone you might hear a little scratching.

  • Yeah I’ve tried a few things like that from needle to speaker terminals, need to double check the positioning before I start taking it apart though. Can’t understand why the treble and bass are affected though, in a 2-way box!

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