Posted by Duke [ 208.98.184.23 ] on November 21, 2008 at 22:03:15:

In Reply to: compression driver Q posted by Halfront on November 18, 2008 at 14:16:47:

For one thing, a dome is much more rigid. A flat diaphragm would be in breakup mode beginning at an unacceptably low frequency, or if made sufficiently rigid (perhaps via honeycombing) would not have adequate top-end extension because of mass roll-off.

I presume the phase plug plays a role in tweaking the shape of the wavefront; hopefully somebody who can speak to that with authority will post.

Duke

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