Planar Speaker Asylum

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Original Message

What causes panel flapping?

Posted by Taki888 on June 25, 2020 at 15:28:11:
Hi,

Question is mainly for learning/curiosity. I had a pair of 1.6 and Emotiva XPA-1's many years ago.
I recall in few instances there was panel flapping when watching movies. I was told at
the the time to set AVR for Full Size speakers and not to worry. It cannot hurt the maggies.

Is the flapping due to amp clipping which is hard to believe with XPA-1's or is it just one
of the planars weakness, hitting some precise resonant low frequency?

Thanks