My opinion on subwoofers has completely changed because of this b&w pv1 : r/audiophile
Bowers & Wilkins B&W PV1 Black Bass Unit LF01533 | eBay
Used bw pv1 for Sale | HifiShark.com
Bowers & Wilkins B&W PV1 Subwoofer | Reverb
MrTechGuyLimited on Twitter: "B&W pv1 repair. These things are not designed to be repaired, the hour or so trying to get the thing apart some could get the PSU out was not
B&W Bowers & Wilkins PV1 home cinema Subwoofer goes nuts! Test and reviews! - YouTube