Much thanks goes to Doug, Peter,Adam, and Lee for spending over 5 hours here today on calibrating and adjusting the BFD and the twin 600s. There is a VERY noticeable differance with having the two subs, and also with the BFD in the system., as the graph below shows. Blue is without the BFD and pink is with the BFD added, in my opinion, the BFD was worth the extra investement and time. Had it not been for above people, I would have been here for weeks getting it set up on my own.