FLXX uses a 4 spoke basket and the obsidian uses a 12 spoke. They both have rubber surrounds but the obsidian uses a proprietary surround that works a bit differently. They both used stitched surround/cones but a lot of subs are starting to use that. Cone is your standard 12" paper conethe basket does look similar just the cone an rubber looked the same as obsidian to me.
