Another thing he can try is to build his own boxed subwoofer. I spent almost exactly $300.00 on a 10" polk DX speaker, a sealed box, and a Jensen amp with a built-in low pass crossover. It wasn't very difficult to assemble, and it sounds fantastic.

Crutchfield also sells pre-built "tube" subwoofers that contain their own amplifiers. For instance, there's a Kenwood model that I actually owned at one time (but it got stolen). It cost about the same as the pieces for the assembled unit. It worked, but since it was a ported model and the amp wasn't as powerful, it didn't sound as good as my sealed-box unit does.

With my new car, the box resides in the trunk, so I have to turn it up louder than I did when I had it in my GTI hatchback. But if you position the box carefully in the trunk, you'd be surprised how much of the sound comes into the cabin.

Tony Fabris
Empeg #144