Hilltop Workshop | Subwoofer teardown and compare. B&W PV1, Velodyne SPL10, and a couple of ferals. - YouTube
B&W PV1 Subwoofer - Guide for repair - help | AVForums
B & W PV1 (Test)
B&W PV1D Subwoofer - DIGITALCINEMA
Used bw pv1 for Sale | HifiShark.com
I opened up few subwoofers to look inside. A B&W PV1, a Velodyne SPL10, and a couple of no-names. Hope you find it interesting. :) - Speakers, Soundbars and Subwoofers - StereoNET International