Video - audible effects of diffraction lens on an 8 inch midrange

Here's a short video with all content including woodwork created by John Lapaire of what the mic hears going from on to off horizontal axis on an Eminence Alpha 8 for:bare speaker; scaled EON style lens and truncated Karlson lens.

I hope it plays as John's choice of music brought up copyright issues.

With some cases, EQ could be helpful as coud be rising on-axis response.