I received my new 20-39PCi last week and set it up Saturday morning while my wife and 2 ½ year old were out for a couple of hours. Speakers calibrated with Avia to 85db with the SVS 2-3db hot. The sub is corner loaded in a room that’s approximately 2000 CF and has a large opening into another 2400 CF. I was really concerned that one SVS might not be able to deal with this much space at reference levels but I was very wrong. Good god this is one amazing sub! More on that later… My wife and son showed up and I started gushing about the SVS. She was skeptical. She always is when it comes to my HT upgrades. I sat her and my son on the couch and threw in my Kodo Drummers CD Ibuki. For those that don’t know the Kodo Drummers use traditional Japanese drums to create their music. There’s lots of very good bass on this CD to be sure. The first track comes on and I’m looking at my wife for reaction. Nothing yet and I’m beginning to think ‘great, she thinks I’m nuts again’ when the first deep drumming starts. I’ll take the expression on her face to my grave. Shock, followed immediately by laughter. She couldn’t believe it. She never sees any difference in my HT upgrades. All I said was ‘see, I told you it would be a major difference’. Later on she said that she was filled with the desire to invite someone, anyone, over to watch a movie. Where’s the toddler recommendation you ask? Well, while we were busy talking about how the SVS improved my entire HT setup my son turns to us and says…"Like a ‘dile marching". What the hell does that mean you say? ‘dile is short for crocodile which is what he calls dinosaurs. Basically, my son said that the sound coming from the speakers made it feel like a dinosaur was walking through the living room. The floor and the couch were shaking and he was in heaven. Shortly after he said "Like a jump bouncing" which translated into english means ‘this is what it feels like when I jump up and down on the floor’. Today he walks up to me and says “Da-E, I want the rumble CD”. Okay, seriously, my son doesn’t know jack about subwoofer A or subwoofer B, he only knows what he experiences and this weekend he was convinced that a dinosaur was in his house! How’s that for a recommendation? As for the more official review…what more can I say that hasn’t already been said? I’m not justifying my purchase when I say that the addition of the 20-39PCi improved my entire setup. I’m running Klipsch KG-4’s as mains, a KV-3 center, and RS-3’s as surrounds. I’ve been very happy with this setup and if I didn’t have the means to get a sub I could have lived with the very good bass that he KG-4’s put out. However, once the 20-39PCi was added it was clear that the KG-4’s greatly benefited from being freed of the task of reproducing the first couple of octaves. The higher frequencies are much, much clearer and the depth of the front array has improved significantly. For the first time I felt like I was immersed in the action during the Lobby Shootout scene in The Matrix. The Lobby now has spatial quality that was just not there without the SVS. I demo’d all of the usual suspects. I was a bit scared when I trotted out the THX intro on TPM but the SVS didn’t blink. I cannot believe how much bass is in this movie. Toy Story 2? The engineers that did the sound for this movie are sick people. The logo scared the hell out of me. I threw in Contact. I’ve always known that there was serious bass in the Okay To Go and Launch scenes but I just wasn’t hearing/feeling it. All I can say is it was as if I was in the middle of the transporter. I could literally feel the sound moving up the front wall, along the ceiling and falling behind and under me as the rings spun around. I’ve never been to any sort of car racing event but I have to believe that Super Speedway comes as close to reality as possible in a HT setting. I thought that it was loud before… Music. I haven’t moved much beyond the Kodo Drummers but I did throw in AC/DC Highway to Hell and David Bowie Earthing. In my best Keanu voice…Whoa! I’m just in awe of the capabilities of this sub. It’s changed the entire dynamic of movie watching in my house. To close I’ll just add that my wife mentioned for the first time that the size of our TV screen is too small for the sound coming out of the speakers. The sound is just too encompassing for how big the picture is. Looks like it’s time to start thinking about a RPTV. Thanks to Tom and Ron. I’d never be able to afford a sub that is capable of creating the bass I’m now expericncing if it wasn’t for your company. You even made a believer out of my wife! I wish you continued success.