I have just seen the prices on these things...and I am wondering...how come nobody talks about these subwoofers??? You certainly hear a lot about the HSU VTF-2. HSU TN1225HO w/o amp = $359 HSU TN1225HO w/ 150 watt amp = $559 HSU TN1225HO w/ 250 watt amp = $709 HSU TN1220HO w/o amp = $499 HSU TN1220HO w/ 150 watt amp = $699 HSU TN1220HO w/ 250 watt amp = $849 The 500 watt amp with active crossover is $699. Apparently the HSU TN1220HO was measured to be -3db at 15Hz! Now...we have seen some TN performance data on the older 1225 (some years ago I believe)...and I have heard that these HSU subs have been much improved since. Dr. Hsu claims that these take up less floorspace than any other subwoofer he has seen (they do look pretty thin if you see the pictures on the website). http://www.hsuresearch.com/ What do you guys think about these?