One sub or two?

I've had 2 Rel Storm III's in my system for several years now. They are paired with Audio Physic Virgo II's. I can't live without the bottem end extension and inhanced upper bass/lower mid-range that running 2 in stereo provide.I run the Rel's (high level) directly off my Virgo binding posts. I plan to go with a full range speaker someday, Revel Salon or Wilson Shasha, once I have heard them in my room A/B-ed with my current system. I have tried in the past but it is hard to beat this setup.

According to Jim Smith in "Get Better Sound", stereo requires two subs for proper imaging; one sub is fine for home theater.

I owned a single REL Storm III, then added another and hooked up as true stereo. I like this setup. And I have owned several other REL subs - they are all awesome, but I definitely prefer the "ST" series over many of the newer models... I LIKE DOWNFIRE!!!

Agree with Loydc comments. I used a single REL for few years & then upgraded to two RELs. The improvements were very evident. Imaging improved the most. Although they say deep bass is non-directional this is something you will immediately disagree with once you hear 2 subs.

Crossing over at 40hz the bass wave is so large it is impossible to distinguish its location...however one has to have true full range output to do this...and a speaker either images well.or it doesn't...regardless of a sub