I have been very impressed with these newer subs from B&W...musical, clean, accurate, and fairly deep bass for their prospective price points...the entry level $500 model has no right to sound this good!...I equate this to B&W's enormous research pockets...ie. driver construction...sealed design...and a certain British attitude to "get it right" without selling out to the HT crowd(extension vs accuracy)....at this price point..what one usually gets is a ported, cardboard box with fart bass!....Not so here...