One of the CDs I use for Axiom's double-blind tests has some excellent pipe-organ pedal-note content. As kcarlile points out, the EP350 does a fine job of deep bass reproduction, including organ pedal notes. During the listening tests, my notes included the comment "Sub A almost as deep and powerful as Sub B on organ pedal notes." Sub A turned out to be Axiom's EP350. Sub B was the Axiom EP500. The latter has Axiom's DSP processing to produce more linear performance, which translates into slightly deeper extension and more output at the lowest frequency extremes, but it was a very close contest between the two subs.
Axiom Resident Expert