Well folks, I received my SVS PB2-ISD today courtesy of BAX Global delivery. My main two reactions are "it is big" and "it blends seamlessly." There's no trick to making the PB2-ISD disappear really. I just set mine up, calibrated speaker levels with test tones and a Radio Shack SPL meter and am now enjoying perfectly blended music. The best thing I can say about any subwoofer is that it does its job without being intrusive for music yet can still provide that "raise the floor" feeling for movies. The subwoofer came very well packaged on a shipping pallet. The shipping box was completely unmarred--wish UPS would get it right this way more often. Shipping weight was about 150 lbs and unpacked the subwoofer is about 115 lbs. After unpacking it I wrestled it up a couple flights of stairs and put it near its corner. At Tom Vodhanel's suggestion, I removed the base plate from mine and have it sat with the ports and controls facing up and the drivers facing forward into the room. It fits in a corner best this way in my situation. The screws for the base plate are accessed by pulling off the rubber feet. There is no grille available so the two 12" drivers are unprotected, but they do look good. The finish on the PB2-ISD box is plain but extremely durable, kind of reminds me of asphalt shingles. My theater/music room is about 20 feet by 13 feet and sits over a garage (wooden floor). I have Polk RTi150 speakers as mains. They are biamped with a Rotel RMB-1075. After calibrating, the first thing I listened to was some of the good bass effect tracks from the Lord of the Rings movies. I then moved on to DVD-Audio from a Toshiba SD-9200. I have a second pair of RTi150s as the rear speakers for multi-channel hi-resolution audio. Next I listened to a bunch of CDs with varied synthesized and natural bass lines that I'm very familiar with--the usual stuff I'd take with me to audition speakers elsewhere. I can confirm that the PB2-ISD meets its stated purpose of being an excellent subwoofer for music. It blends well with the Polk RTi150s, which hit effectively down to 26Hz by themselves. I run the Polks large in all media modes. The PB2-ISD is being run tuned to 20Hz (one port blocked). The PB2-ISD really does blend in, adding solid bass where it wasn't before. My previous subwoofer was a Polk PSW-450. The PSW-450 is not a bad subwoofer, but quite anemic, wheezy, and boomy in comparison to the SVS. And, for those concerned about home theater with the PB2-ISD, do not be. Although the PB2-ISD is the little brother to the PB2-Plus in terms of drivers, amp, and ports, it does indeed make some serious rumbling effects. I haven't heard the PB2-Plus, but the PB2-ISD is more than enough for me for home theater use. This is a heck of a bargain.