Would you buy a pair of speakers by just looking at the measured freq. response?

@ghdprentice this issue is other confounding variables. The scanner is measuring cone breakup modes … sometimes the ( in the example i am most familiar with a very popular and expensive paper 5” mid is often out of phase with the input…. So add in a mid cabinet, inert or not, a large or small baffle and even a simole filter network and correlation…might prove elusive….

My prefered designer is a measure and listen guy….. ( since 1977 )

OP yes…there is a German company that makes a laser scanner of the cone or diaphragm in motion in comparison to the input signal…. You might be surprised how poorly some materials do at reproducing the input…..

Sure as long as the impulse response and the waterfall also look good with an earthworks or better microphone and a competent test setup technician…..

my way of saying this is either a brilliant or idiotic OP ?