My Bass player and I finally got a chance to verbally discuss and dissect the woofer. We are currently writing Adam and Jamie because we feel their design was flawed, causing the speaker cone to oscillate with the drive shaft (note how the edges of the cone move back and forth) and not correctly reproducing the linear in and out motion of a speaker.
So, that in addition to welding the sunroof closed, would produce a more accurate result. In our opinions anyway.
It was surprising to realize that, since Adam and Jamie have observed up close how speakers move at low frequencies (The Brown Note episode with John Meyer).