I agree with the other posts. It's time to sell the speakers and move on. It's tough to admit that you made a mistake, but we have all done it. I bought a pair of speakers once that just did not match the equipment that I already had. The highs were bright with too much sibilance. The speakers sounded great when I auditioned them, but just didn't work with my room, equipment, etc. I ultimately sold them, and bought other speakers. That was far easier than going to work on all my other equipment.
Jeff