Dunno how many care but I finally finished my Tempest tonight and did some measurements. IT's a 128L sealed design (250w PE). 1.5in walls, first layer is MDF- 2nd layer is soft wood (pine), then internally braced "moderately" with mdf. I'm absolutely impressed with this design. I could not be happier. My last sub was a KSW-12- I could sense quite a bit of boost in the mid 30s. Today was the first time to get the sub "in house." After 3hrs of calibration and adjustiments I got a relatively flat response down to around 22-23hz. BUT to my surprise I pulled a 108 db @ 27hz and 101.5db @ 20hz. These were taken with a room of 1780cf with a hallway opening (apartment). However I'm most excited about the sound of the sub! Its so articluate and accurate (it's what DAN uses ) I did the measurements to see how I compared to my friends 'digm Servo 15. The sub is very tight, very punchy, very relaxed, very "musical", very low and very deep- did I cover all the cliche' sub terms? It does sound great for music crossed at 70hz and is even more amazing for .1 LFE movies. I guess I'm raving....here are the pics for it. There are two pages- click the page tab for the 2nd page. BTW- I used the H/K 3470 for testing with objective musical scores. This HK is 100x2 and purely analog with NO video involved. Amazing 2 ch receiver- sounds like a pair of Parasound monoblocks.Click here for page 1 click here for page 2- DON'T forget to say HI to KAISER!!!