[JayG]

Ive also been looking for a decent sub for my Boxster. I often have my wife in the car, so a footwell or behind the seat enclosure wont work. I have the basic sound system, no rear or door speakers although I am about to add the rear speakers.

I want to go with a sub under the right seat. 2 in depth would work for the speaker without raising the seat rails, but I think 13" diameter may be too big. I was not planning to have an enclosure for it, just the speaker under the seat. I realise that is not the best way for bass, but ya got to work with what ya got.

There are a few powered subs that are smaller, but the only one I found that would fit without raising the seat is no longer made and I have not been able to find one on the web anywhere

When you get the sub, it would be interesting to see if it would fit under the seat with the magnet in the section that is lowered in the floor pan