I have my M22 on-wall and VP100 on-wall (LCR) set up and sounding great, but I am curious as to the freq. response of the center VP100 compared to the M22's. I see the M22's are 70Hz – 22kHz, and the VP100 is 105Hz – 22kHz. Is there a reason the VP100 doesn't go down as low as the M22's?