I'm putting a system into my 1999 Buick Lesabre. The component speakers will be Boston NX57s and 97s, and I'll have a nice head deck for them, maybe a small 4-channel amp. My question is on the sub part.

I'm looking for a subwoofer setup to deliver a nice extra thump, but I don't want to be cruising around with my windows rattling and trunk sounding like someone's using a grinder inside of it. Just enough sound to accent the music and make me feel a good thump.

I'm THINKING about using a single JL audio 12w3v2(or whatever it is) in a sealed box and putting my 600-wat Rockford 2-channel amp on it. Should that amp not work out, I can get my hands on an Alpine Class D 700w. Now, here's what I'm unsure of. Will this be enough sub/amp to deliver the limited amount of boom I want, or should I go to 2 subs and more amp, or 1 15 and more amp, or any other posibility. I'm hoping someone has experience with these things here because my car before this had a hatch so 2 10s rocked my fucking world, but I'm clueless here.