At this point, I think your best bet at this point is to get to the crossovers and visually inspect them for any damage. Have you had these long or are they a recent purchase? I know when I traded for a couple pairs of Epic CF-3's a couple years back, I had one pair of crossovers with a couple of burnt resistors on them as they had apparently been ran hard. If I'm not mistaken, the crossovers are literally part of the terminal cups on those like the Epics on very crowded boards. Should be super easy to just unscrew them to inspect and take photos. My personal rule of thumb is, if I do something to one side, do the same to the other or you may end up with varying results again.