Planar Speaker Asylum

RE: How Are Oscillations In MMGs Measured?

67.168.20.189

In Reply to: RE: How Are Oscillations In MMGs Measured? posted by JimOfOakCreek on August 07, 2008 at 20:52:56

You can measure transducer vibrations by placing the microphone very close to the transducer surface...about 1/4 inch...and then exciting the driver with impulsive signals.

You can measure vibrations in/on the baffle structure by attaching an accelerometer to the surfaces at various points.

I did quite a bit of this when I was fiddle-farting around with the MMG oak-framed replacements. I modified one MMG and left the other one stock to view the relative differences.

Caution. You may not like what you see when performing tests like these. :) The Magnepan transducers store a considerable amount of energy relative to other, more conventional, electro-acoustic transducers.

Cheers,

Dave.

Follow Ups:

"Fiddle-farting" Is that a technical term?? (nt) - CometCKO 16:44:38 08/08/08 (0)

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