I just replaced them wth new eminence speakers. I have 4 10's and 1 15 out of transporter cabinets. They have aluminum cones. The cabinets were bought new in march 2004. They are in really good shape. Some of the foam where they mount stuck to the cab when I removed them so it tore a little,but other than that they are fine. I can take pictures if anyone is interested. make me an offer.