I find this hard to beleive. But no big deal, I am on a quest for best under 300 sub. At the moment I have the JBL E250p, and on its way in about 4 days is the H100 (Dr. Hsu Acoustech), these 2 will be compared next to each other, I will keep the winner. Then will get the X-sub to compare against the winner. But I may go ahead and have all 3 here for subjective tests. Ah what the heck, you only live once.... All 3 it is... The one that is rated to hit the lowest is the H100 (24hz), however Buck PM'ed me and made a good statement, the JBL over the H100 may have a higher spl range.... We will see.
These tests may go as far as outside in a large back yard over looking a canal.
So this would be closer to anechoicly correct. However there are other houses over 150ft away, I can only do so much....