I had the 10's and blew 2 of them. They sounded nice, but when they're blown... they sound pretty quiet if you ask me!!! They're just made cheap I think. I don't know that much about subs, but my experience is that these subs are definately not ones I would recommend to anyone. One blew, and the other ripped the wire that went from the speaker wire terminal to the side of the sub. I couldn't believe it! I'm in the process of replacing them too. Can anyone recommend a good 10" sub for a Digital Audio class D mono amp (DAD9004) ? I wanna run it @ 1ohm. Thanks. Hope this helps.