Here is my problem...looking to upgrade my subwoofer (presently a Mirage BPS-100) to either an SVS or HSU or another yet to be researched brand (open to suggestions). I have an SACD setup where I run bass management internally in my Sony 555ES player and run analog direct to my preamp. Problem is, word on the street is that the Sony does the internal crossover at 120htz before sending the signal out to the 5.1 setup. Seeing my present sub has a range of 29-150htz, this isn't a problem right now. However... Seeing as the HSU VTF-3 has a frequency response of 18-90htz, and the SVS 25-31 has a frequency response of 25-100htz, I was wondering if people make subs anymore that have a frequency response of greater than 100htz? I was really looking forward to getting one of these fine subs, but if I'm going to have a 20-30htz gap between the Sub and the mains the way my system is configured, I'm going to have to look in other directions, other manufactuers. Can anyone recommend a different sub? I don't want to get an Outlaw Audio ICBM to rectify my situation, but I may have to if I don't have a choice. Thanks.