I’ve lurked on this site for a looong time. Today I finally signed up so I could join this discussion. This beast is my baby (along with the rest of the team at Deus), and we were so proud to share it with the hifi community at Axpona! Sure it is big, and ridiculous, but I think you guys will appreciate it more than most. I see the A&D driver above, and that is definitely a big driver. Another brand has chosen it for their flagship products. It is fine for a big, standard driver. That’s not the direction we took. Ours is the outcome of years of R&D, and is 100% custom, and based on a novel new motor topology that allows us to have essentially flat BL like an underhung woofer, but do it with an overhung coil to handle the power. We strive to eliminate as much distortion as possible, and as such have nearly flat BL, KMS, Lex, and Lei for +/- 30mm. 82% BL is 33mm. So yeah, it’s big, but check out the specs on our site. It performs. I didn’t see this post till Friday after work, but when I hit the office next week I’ll share our measurements. They are pretty nice!