[Rick Craig]

1/12 octave smoothing and showing room effects below 200hz. The 100-200hz area is the floor bounce reflection. This is the sealed box option.

[Rick Craig]

This is the sealed box impedance which averages 4.5 ohms and only dips to a minimum of 3.97 for a reasonable amplifier load. 

[Rick Craig]

Here are the vertical response curves which start at zero degrees (tweeter axis), then move to six degrees (midrange axis), ten degrees (middle of midrange and woofer axis), and then fifteen degrees (woofer axis). This is a tough test for any WMTMW 3-way as well as MTM 2-ways (the latter typically fare worse since the driver spacing is greater with larger woofers).