I'm not a sub expert but have been spending a lot of time figuring out my 'future' sub configuration. My initial plan was to upgrade my Descent i to a BF 212. Then the real discussion started. First, Chops enlightened me about running high level connections to my Descent i. I spent much of today on that project, and that will go live tomorrow. Next, I was surprised to learn that going to two (or even more) subs appears to be beneficial in balancing out the bass across the room. I want to be careful trying to explain this but apparently, the more subs you have, the easier it is to physically place them for good bass. That's very appealing to me as I have two (or maybe two and a half) places I can put a sub. If multiple subs helps me with my bass, I'm going for it...