I am currently starting to research subwoofers for my HT. I am wondering what you Velodyne owners think of there subs? Am going to look into SVS, Velodyne, Sunfire or I might build my own? If I build my own I am looking at least a single JBL 18" driver. Will have to research an amplifier for that driver but there it is . Would like feedback from anyone who has Velodyne 12's and 15's and what thy think?