Ported or sealed? If your gonna go ported you will not hear some of the higher lows, if you get what im saying. Iv had alot of speaker and amp from the entry level to the high quality stuff. ( 1 of my amps cost more than some peoples cars, and some of mine as well, check profile ) I HAD the W7 in my z awhile ago hooked up to a pioneer D3 which has ok pre-out voltage and i could never turn the stereo up past 15 ( goes to 41 or 43 ) without hurting myself. When it was at 20 i could be parked about 1.5 block away from a car a set off car alarms. also you might need some glue or stronger glue for your side mirrors because my mirror would fall out when i played my music loud. I'd be driving down the street about to change lane and my mirror would be hanging from the holder from the heated mirror wire. Unless you wanna really DTP, 1 in more than enough. But if not go ahead, just watch out for cops. Just make sure you get the right box. If you want so more info on box you can email me and can give you some info. Also i had mine hooked up to a pdx 1.1000 and that was rated at 1000 watts rms at 1-4 ohms, and test at 1265 watts rms at 14.4 volts