Please don't shoot the messenger on his first post. I appreciate Brian's music, but there is a glaring incongruity in his position that I am surprised all the experts here have not noticed.
The MMThree / MMThree Exact is an active speaker. It has a built in 1000W amplifier to drive the woofers. The more astute will take note of the -3db point. 10Hz. The only way to do that with a box that small, small for 10Hz, is with an active system that increases the drive to the woofer as the frequency drops like many subwoofers do. Frequency correction is active speaker basics.
There is another incongruity that is pretty obvious, but this crowd is harsh, so I will let them figure it out on their own.