Re: Planning on getting two Kicker CVX 12 inch subs.
I run 2 of them in 2.5 cubes sealed net single chamber off 1000 RMS at a 2 ohms. I have dual 2 ohm subs wired to 2 ohms, obviously. I'm definitely happy with them. If you run them at 1 ohm, you'll probably need some electrical upgrades. I honestly don't think they'll take a full 750 watts. I don't think I'd give one more than 600 RMS. I'd get an amp that'll do somewhere between 1000 to 1200 RMS. If you didn't get the subs yet, get dual 2 ohms and run them at 2 ohms. You've got a lot of options amp wise for that kind of power at 2 ohms and you'll have to do minimal electrical upgrades.
94 Caprice Classic LS: DEH-P800PRS, TS-C720PRS, MRV-F545, MRD-M1005, 2 Fi X 12s in 2.5 net cubes sealed; 97 Grand Cherokee TSi: CDA-9855, TS-D1720C, MRV-F345, MRD-M605, SWX-1043D in .54 net cubes sealed
Resident Jeep Expert, Mother Fucker