Coaxial speaker near field measurement
Coaxial speaker and woofer tower measured from 1 meters. 50Hz peak is not real but more of interference from somewhere.
Chorus mondo center speaker measurements
Very old speakers: B&W DM12 from 1985 or something.
Old cheap ones: JPW Minimonitors (tweeter cap changed from electrolytic to mkp).
Main speakers measured from listening position. some oddities occurs.