It sounds like cadboy knows what I mean. I have it crossed ove at the same freq. as I did with the STF-2 which is 80hz. I posted the same question over at HSU forum, and only response that makes sense is at 20hz the HSu VTF-2 hit's 93db at 20hz, where as teh LMF-1 only hit's 83db. This is according to Tom Nousiane's measured data at http://members.cox.net/fabulousfrankie/Nousaine.htm

I have to play with it a little more.. but I have to say that although the LMF-1 gives more BASS FILL, it doesn't hit as hard as the STF-2. Anyone out there compare LMF-1 to a VTF-3?