Since I wrote the last review, I have been in touch w/ Mirage tech support. They were very concerned with my problem. We determined via e-mail that the front "driven" speaker has blown, or had a defect. They sent me one immediatly as I was willing to install it my self. They did not require that I return the speaker for inspection nor did they ask that the faulty driver returned. Quite a pleasant experience. This has corrected all the problems that I was having and I am now entirley, 100% satisfied with my purchase and Mirage tech support. I would recomend these speakers and to anyone!