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Old 03-06-2009, 01:38 AM
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Huuvola Huuvola is offline
Junior Head-Fi'er
 
Join Date: May 2008
Location: Somewhere in the Sierra Nevadas
Posts: 19
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Thanks for great info from all of you.

Quote:
Originally Posted by Tyll Hertsens View Post
Good question!

The big hump is the free air resonance of the driver.
So,that "acoustic optimizer" in the AH-D7000 that Denon claims is supposed to equalize sound pressure levels on both sides of the driver...perhaps that is responsible for eliminating the impedance hump? I wonder at the mechanism.
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