The L7 I have is brand new in the box (not a speaker box just the retail packaging box) and the rms is 750 watts RMS and 1500 watts peak, but you are correct they blow easy when you push rated power to them, the hifonics subs will take 1200 watts rms all day long and over 3500 peak for burping at competitions, i run mine at 2000 watts everyday in a daily driver. if you hook 1 dual 4 ohm sub to a zx1000.1 it will be 2 ohm load on the amp so you will get 1000 watts to the sub so if you want to run it slightly underpowered to keep it from blowing use the 750.1 per sub, i can do those at about 250 each shipped
the price is 150 plus 10$ flat rate USPS shipping and yes I accept paypal [email protected]
the warranty starts the day you buy it for 12 months but kicker will not cover burned or blown voice coils, that is why i recommended the hifonics (which is what i use to compete with now) because they put out better quality sound and alot more of it and they will take alot of abuse, if you want boxed speakers ready to go in kicker brand ported boxes I can have them drop shipped right to your door as well, the only reason i am selling the 1 L7 i have so cheap is because a customer ordered it then never paid for it so I am selling it at cost. be careful if you are buying on ebay as you have no warranty at all and you cant force the seller to give you 1 even if they say it has 1. because authorized dealers are not allowed to do internet sales at all so kicker and most other companies will not honor the warranties.
also you dont need 2 amps you can use 1 bigger amp and still run 2 subs just by changing how you wire the subs at the amp. 1 large amp costs less than 2 smaller 1's usually just not with kicker brand