yes, and the 1500 is prolly pushin nearly 1800. Generally, kicker amps are underrated.
Also, Do NOT get dual 4 ohm L7s and plan to run it on a ZX. ZX series amplifiers are not 1 ohm ohm stable. SX and KX series ARE 1 ohm stable. So again, dual 2 ohm subs....get the zx, if you get dual 4 ohm subs, get the sx. You'll be happy with both, just the ZX will give it more power.