newman (11/22/82)
I too have been given a straight-faced demo of a loudspeaker producing 15khz square waves then sine waves, with the demonstrator pointing out you couldn't tell them apart. C'mon! A conventional speaker cannot produce a 15khz square wave faithfully because of the rise/decay time! It would come out resembling a mangled sine wave. I think the demo I saw used an 8" woofer too!!