A month ago I sold a guy a used Alpine PDx1000.1 for his D4 L715. Install it all in his car and he is on his way bumpin. bout 3 days later he shows back up w/ the sub rattling. Sure enough, triple joint is broken. He leaves and comes back w/ a brand new L715 for me to install. Ok, all good now.
Nope. He blows the new L7 in 2 days! Heads to another shop and buys another one. He just left the shop, came by because the PDX was blowing fuses. His 3rd L715 THIS MONTH has a shorted coil. It was showing 1ohm and blowing fuses in the amp (D2, was wired to 4ohm). He left to go get ANOTHER L7.
I wonder how long #4 will last him? He has taken subs in and out of the box so many times I doubt this one will mount securely to the box.
at this point i think he is killing them, that many L7 cant die that fast unless you are doing something horrible to them. they should last at least a week each.
I had some bad luck with l7's before. I went thru 4 of them myself, each only lasting a few days. I bought the first one as a referb for 200ish went thru 2 more referbs, Then Kicker sent out a new one as a replacement, All of these were under warranty. After I got the new one, it was fine for 3-4 months, then I sold it for like 300. Sure he has a good juice supply to the amp? low voltage couse cause the amp to clip it to death. Also is the gain set up? bassboost, ect..? could be just bad luck with bad subs. it happens. However kicker has great CS, so i am glad the are covering him.