47hz bump is my room, haven’t run Audyssey yet, but at 76dB, the -3dB point is 32hz. Played some electronic music with tons of bass, switching between a 60hz xover and full band, I couldn’t hear a difference. They’re about 4dB louder than the 150ms too.
They do sound slightly brighter, also have tighter imaging for whatever reason. Due to the 1500hz xover and 1.25” great diameter woofer, and larger horn, I expect directivity control to extend down a bit further that the 1.5khz of the 150m.