I have dual VTF-3 MKII subs in my 13x24 basement theater. The two VTF-3 subs hit hard as heck and can make you feel as thought the entire house is coming down around you. I've measured my two VTF-3 subs down to 16Hz at some serious decibals that is way more that I can take in a room this size. Sure you can always find a sub that plays louder, but it's not all about decibels its also about the quality of the sound and the VTF-3 is one of the best sounding subs I've ever heard. The VTF-3 is a serious performer in Hz, dB and sound quality. Very few subs are good at all these things. Also the VTF-3 is probably the first upgradable sub and by adding a turbo for only $200 you have a sub that will supposedly play as loud as "two" VTF-3 subs with the same top notch sound quality.
I'm not bashing Axiom subs or speakers and I even own some Axiom speakers. The VTF-3 is just a great sub and two has to be felt and heard to be appreciated.
