Definitive Technology no longer has replacement drivers for my speakers and I did a lot of research trying to find a suitable replacement. My right tower had a dead 15 and I had lived with it for 6 months since I run transducers in the furniture and an 18" subwoofer in the living room. I was going to buy a pair originally to save on shipping, but I figured I would experiment with the lowest expense. I installed the Mavin within hours of its arrival and was astounded. I have enjoyed my Def T [...read more]