Hi Guys, I'll try to keep this short and sweet for those who are considering getting a sub, but are confused by the many offerings out there. I just got my 2nd 16-46CS+ today and I've been working the behind off my system since I got home and set it up. I have a Rotel RSX-965 receiver (75w RMS per channel), a Samson S1000, dual 16-46CS+ SVS subs, Toshiba DVD, Xbox and POS speakers that will soon be replaced (looks like Axioms at this point) ... Now Tom, Erik and Ron know that I'm all the way in Trinidad, so certain things are not easily available, SPL meters being the most outstanding item at this point. Hence calibration is done by ear .. When I first got my amp and SVS, all was not rosy. I have a small room < 2000 cubic feet, but on very bass heavy tracks, I'd induce clacking on my SVS. This is due to the insane volume levels I like to listen/watch at and likely, poor calibration. I went with the 16-46+ mainly because I wanted the most impact for HT and it's the lowest frequencies that you feel, more than the ones your hear that IMHO, create the best impact for HT. Too, the Ultra is unfortunately to much mula for me and I have to deal with a 40% duty on imported items. However, I digress ... Whenever I really cranked my system to the preferred levels for movies/music I was constantly looking for the amp clipping ... very distracting ... Or I had to set the sub levels lower than I preferred... So I figure why not order the 2nd sub and get some extra headroom? Well let me tell you, 2 SVS's are and entirely different beast from just 1! This time calibration was a snap, I hooked up everything and set the subs to min on my receiver. I stick in the Haunting DVD ... Set the volume to my preferred setting ... Now I live in a concrete house, my HT room is my bedroom, so it's crowded, cluttered, and carpeted. Big windows on one side, but they are permanently shut now. With music cranked, the pictures on the wall in the nest room were jumping, no lie, no exaggeration ... Remember this house is entirely concrete. With the Haunting, the chandelier's were rattling outside, my bedroom door was shaking ... It was just awesome ... There's no clipping or clacking now, even when I push the system till my ears hurt ... I'm the type of guy that blows tweeters once a month ... :b The weird thing is, the bass from the SVS really doesn't sound loud, because it's so clean and there's so little distortion that you don't realize how loud it is till you go outside and realise how loud it is out there, or just view the special effects to the environment while the Haunting is on, lol I purchased these subs, unseen and unheard with the HIGHEST expectations ... To say I'm completely blown away would be an accurate description! I shall now attend to inviting friends over to experience the absolute madness that is SVS.