Check these little guys out: http://www.partsexpress.com/pe/showd...number=264-814 I was playing around with a degin where you would have 4 of these drivers in each of the front speakers (ultra-low profile) and WinISD says I can get decent bass below 120 Hz. (closer to 100 Hz. it looks like) The cabinet would be less than 5" tall, 13" wide, and about 8-10" deep. While I will not do this project (paper project ) - the onlt 'wild card' would be if the frequency responce and overall tone would work - as in, with full-range drivers, will the SPL be farily even across the audio spectrum? Just playing around and seeing what you think. It seems 4 potent full-range drivers in a small box could make a great little system if you didn't have room for bigger stuff.