They are beautiful – the wood is walnut.
The subs have a slightly customized back plate which has two sets of posts, 1 set completely by-passes the x-over and other controls (level and damping) and 1 set which uses the controls. I thought for sure I would want to bypass the controls but actually I have found it works wonderfully well using just my Berning amps to drive both the full range and bass panel wired in parallel (which is how Roger has them intended) Note the bass panels are additional energy for the room…the full range panels function normally with the full signal.