Thanks for the welcome. I have been lurking around this forum for a few months but haven't taken the "plunge" to post a reply until now. I got bitten by the "bug" about a year ago and have been soaking up as much a I can on this and other forums. I will admit that you guys and this forum are on the next level from the other forums so bear with me when I ask dumb questions. Anyway, getting back to the sub. I guess I assumed since the sub was called "215" it would have 2 -15 active drivers vs the "larger" which has the 12 and 15" drivers. I stand corrected. One other question, I notice in the pictures all the Ampzillas, would anyone know how Brian set up the system? Meaning, what did he use for for interconnnects, speaker wire, source equipment etc. and how did he wire it up? Looks like bi-amp on all the speakers. Anyone who was there know?