The Hsu that measured flat anechoically is the TN1220.....I believe the VTF-3 did as well, but not at clean. All the professional reviews are up on Hsu's site.
Yes...the new VTF-3MK2 and my older VTF-3 are almost exactly the same size. The MK2 has feet....so it is a little taller.
Saturn...did you actually measure your old sub playing lower than the VTF-2?
I think the Hsu would have better sound quality, and two of them would at least match the output if not surpass it. Without really testing it, I do not know. I don't think I would ever need any more output than what my VTF-3 provides.....but I am always looking for better sound quality.
