Like everything else this may have been posted before but I think its quite worthwhile.
Like others, I need my space in the box to carry stuff. I cant waste the room hauling a monster sub box around to listen to bass thats too loud for me anyway.
Here's the deal
http://www.onlinecarstereo.com/CarAu...roductID=18290

I installed one of these under the passenger seat. I works great and while not a pounder, gives some really nice bass once you get it tuned. It has a slick remote for the amp that you can mount anywhere to be able to quickly boost those songs that are bass enemic.
You cant beat the price.