I disagree about def tech fudging their specs at least from the products I have herd . The things I like best about the sub is the power and range it offers .
The store I buy from has paradigm def tech and b and w , I've compared it to all of them side by side and hands down killed them for music and movies , its only contender imo was the paradigm sub 15 which is outta my price range . I am not big on I'd companies although I do like my qs8 they don't hold a candle to the paradigm adp but at a 1600 price I had to make a sacrifice which turned out to be decent .