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In Reply to: RE: What to make of the Audio Science Review of the Magnepan LRS ? posted by Joe Schmo on March 21, 2021 at 18:48:31
And just the past few years John Atkinson has admitted that he just doesn't know how to adequately measure planar-style speakers, and cautioned others against measuring badly. Nice to see somebody willing to admit they were wrong.
Harry
Follow Ups:
Yep. It's a challenging business. He makes pseudo-anechoic measurements close up, but *you can't do that with a dipole,* it shows ridiculously exaggerated bass.
He also points out that when he measures impulse response, he doesn't know what consists of the actual speaker output and what consists of reflections. It's very hard to get a quasi-anechoic measurement of a line source dipole. You have to measure at the listening seat, not a meter from the speaker (which you should actually do with any speaker), and you have to keep room reflections out of the window by keeping the window and mic more than the speaker height away from walls. Even then -- if you window out the floor and ceiling reflections, you're going to get less bass than there actually is.
I asked him why he didn't do in-room measurements and he said that it would be impractical.
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