I have a JL 1000/1 its about 11 years old I had a pair of 12 inch jl 0w3s on it when I got it they worked fine then I put a pair of power acoustic 15s rated at 1000 watts for the pair and blew them up in a few months a pair of 10 inch kicker cvr rated at 800 watts for the pair they lasted a half an hour and now 2 jls 15 w3 rated at 1000 for the pair and they only lasted a month and this time I had a JL dealer install them is it a problem with the amp?