Not only did Jim Wilson have a difficult time getting info from these guys, I can't find any "real" specs from them either. I even took a look at their owner's manual and the specs reminded me of Def Tech. They show a frequency response of 12 Hz to 250 Hz … for a 12-inch driver plus passive radiator? Give me a break. Of course they didn't give a plus/minus range with that, so they can say just about anything, and apparently do. Same with the amplifier. GoldenEar shows 1500 watts (S&V noted it as 1,000 watts RMS and 2,000 watts peak), so I'm not sure why GoldenEar doesn't give accurate specs (again, it's the same knock on Def Tech). A thousand watts is impressive, so why exaggerate? And a spec of 24 Hz - 138 Hz plus/minus 3 dB, while certainly not a world beater, is respectable The one review I could find (S&V) noted it down -3 dB at 24 Hz and down -6 dB at 21 Hz. While a far cry from its stated specs, it's probably a very solid subwoofer, especially from 24 Hz on up, but at $1,000 I would have expected more capability or a nice wood finish and not vinyl. The weight at 42 lbs. is probably average for its small size. Heck, my cheap BIC V1220 weighs 42 lbs.
SVS shows the PB-2000 specs at 17 Hz - 260 Hz plus/minus 3 dB, and they don't tend to exaggerate, however, I don't have a clue what an $800 sub in the USA would end up costing you.