I bought my SRT6 about 3 months ago, both subs were blown (the foam ring had disintegrated). I didn't know that this could be fixed before, but after a search found replacement foam rings from Parts Express, and now they work great! I was able to get the thump that was missing when I bought the car. My new Infinity speakers for the front will be arriving tomorrow from Amazon (thanks to Carl and Maxichon for the info!)