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Contentious Panel Speaker Measurements

>Then why no counter measurements from magnepan, can i request
>imp/mag-phase and FR graphs from magnepan....?

Magnepan's Wendell Diller has stated that he doesn't want the company's
speakers measured because they will will reveal proprietary information
regarding the crossovers. This may or not be correct. However, in my
conversations with Wendell, it emerges that he does not like the waterfall
plots that I publish, feeling that they paint Magnepans in a bad light.

With panel speakers, cumulative spectral-decay waterfall plots do tend
to look hashy. This may be due to the multiple arrivals at the microphone,
due to the physically large radiator. Or, as I have conjectured in the
magazine, it might indicate Chaotic diaphragm behavior, ie, while the
average position of the diaphragm responds pistonically to the driving
force, individual elements vary in their response, "shimmering," as it
were.

I don't currently know how to best investigate either conjecture.

John Atkinson
Technical Editor, Stereophile


Edits: 06/21/15 06/22/15
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