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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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In Reply to: Re: the on-axis hole posted by Jmmlc on February 1, 2007 at 01:39:45:
Bonjour Jean-Michel,It is my understanding that the on-axis hole is an artifact of a virtually inevitable mouth reflection. It would take an infinite radius "lip" at the mouth to totally eliminate it. A larger radius "lip" does produce a measurably smaller on-axis hole.
The measurements I linked to are with the HOM[higher order mode]-absorbing refractive foam insert in place. The on-axis dip isn't a HOM artifact, so design features that address HOMs have no effect on it.
The Summa is designed to be listened to somewhat off-axis, which has other benefits aside from smoother first-arrival sound - but that's another story.
A la prochaine,
Duke
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Follow Ups
- Re: the on-axis hole - Duke 03:58:31 02/01/07 (4)
- Re: the on-axis hole - Jmmlc 04:45:37 02/01/07 (3)
- IMO - EGeddes 18:41:36 02/01/07 (0)
- Re: the on-axis hole - Duke 13:06:34 02/01/07 (1)
- Re: the on-axis hole - Jmmlc 09:10:10 02/02/07 (0)
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