Kicker cvr 10's keep blowing need help?

[Garrett]

I have 2 cvr 10's powered by a 750 watt kicker amp. Ive blown about 10 subs over a two year period so obviously something is hooked up or set wrong. It wasn't a problem before because I used circut citys return policy to replace them but there out of business so i need to figure this out before i buy some more subs. Any suggestions would help thanks