When DW made his current 12 x 20 and 12 x 22 bass drums he told John Good his old Ludwigs were 11 deep and that's what he wanted. According to John they contacted Ludwig and were told that they could only be 12 deep, unless Ginger "modified" them himself. Along with his snare, cymbals and hardware he carries those bass drums to all his gigs while DW supplies the toms at the venues.