I'm currently using an all Paradigm set-up and finally purchased the Paradigm PW 2200 sub. I think it goes down to 18 Hz and is front-firing. I couldn't be any happier with Paradigm products. Very reliable, well made and not too expensive. I too like deep bass and this sub shakes the foundation.. I'm serious! If you don't want to spend over $1000.00 for a sub, you need not look any further. The PW 2200 goes for $900.00 CAD
happy hunting!
happy hunting!