hey im the guy to talk to. i have 2 s15l7 sittin in my trunk. i have a single 1250 watt planet audio and it is turn half way down. check this amp out. also the 850 watt planet audio. these amps will bridge to other planet audios if you wanted to add on. personally i would go with the 1250 watt. i got mine for 360$ and it comes with a 6 year factory warranty. how can you beat that?
It is still a Boss Audio product, even though it is their top of the line, I would look for a better amp, just my oppinion though. you will run those subs at a 1.33 ohm load.