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In Reply to: RE: X max posted by Awe-d-o-file on April 20, 2015 at 16:18:59
Xmax tells you when the coil is leaving the magnetic gap and the waveform will be increasingly compressed beyond this point (distortion). Xlim is when you hit the physical limits of cone travel.
Edits: 04/20/15 04/20/15Follow Ups:
I had always thought there was an linear xmax and a mechanical xmax where linear was the limit before performance suffers and mechanical is limit before bad things happen.
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I've just finished building a little speaker using a driver that has an Xmax of +-5mm and an Xdamage of +-9.25mm according to its spec sheet.
From all the spec sheets I've seen Xmax is always maximum linear excursion usually in +- mm while Xlim, Xmech or Xdam all mean the same thing: Max excursion before permanent damage to the driver. It is frequently but not always listed as a peak-to-peak measurement to make it look better.
Both are not always specified and different speaker manufacturers have specified it differently but the common Xmax spec is usually linear excursion and Xlim or Xmech is the mechanical limit (occasionally XmaxL and XmaxM).
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