I do a lot with car audio. In fact, I am a car audio dealer/installer. I have a vintage ampeg 2X15 cabinet that I hooked up to my Rockford Fosgate 501bd amp just to see what kind of low end potential it had. (The V4 head wasn't working at the time, and still isn't) I was very impressed. I experimented with the exact opposite. I hooked up a pair of Image Dynamics 12"s to my Trace Elliot combo to see what kind of sound I could get. The way it ended up was just as I suspected. Subwoofers in cars are meant to produce the lowest notes as loud as possible, so the clarity certainly lacked. However, with the equalization set a bit differently, both on the 9band EQ and my onboard preeby, I got my celestion ten (in the combo) and the car subs to sound pretty good with more low end rumble than I had ever heard a bass amp produce. My new scheme is to buy a Fishman preamp and hook it up to my car amp which will go in to the most efficient subs I can get. Infinity, JBL, JL Audio, or whatever else I find that does the trick. Probably eights so I can have a little of the higher end bass frequencies. Has anyone done this before and had good results? I will carry out this plan of mine eventually, but for now I want to know what YOU have done and what worked out the best. I've seen and installed come crazy stuff, and things that sound good in a complete car stereo system, but now I want to target the bass guitar. Any thoughts?