Dana:
It IS beginning to sound like there's a defect, but try one thing before packing it all up: Just hook up a DVD player straight into it's RCA composite connections and play a CD to see if you get bass. Ensure that the crossover is as high as it can go and (if there is one), the bypass...er...isn't. \:\)

Bypassing everything else will let you know for sure.

::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::