If you want constant LOW bass just to screw around go on Kazaa and type in this:
Boston Acoustics Bass Test CD - Woofer Bass Hit
Depending on what equipment you're running it will have your hair standing up for about 4 minutes straight.
I had my cousin play it in his Neon with two 10s powered by a PG XS2300, and a PG XS4300 powering two sets of Alpine SPR-175A components and it sounded really nice.
Then we put it in my car with the PB15 running off the Alpine T757 tuned pretty high. My 7" Vifas and Neo8s (Using 4 channels of the Alpine F407) and the PG QX2180 running the tweeters. It was sick

I definetly need some tweaking but I was shaking the hell out of anything near the car with no audible distortion.