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RE: Mmmm "it already is phase-coherent resulting from the drivers all being on the same physical plane." ...

Posted by Davey on April 3, 2015 at 09:40:09

In Reply to: RE: Mmmm "it already is phase-coherent resulting from the drivers all being on the same physical plane." ... posted by Satie on April 3, 2015 at 07:09:25:

Well, the 300us exists. You can't explain it away. :)

I understand Jim Griffin's take on this aspect of line-source radiation and chatted with him a few times regarding this. And I understand where you're coming from with your take this, but this is an inherent physical characteristic of the transducer.

A Stanley tape measure will show the relative differences in path length (time smear) do, in fact, exist. No acoustic measurements are necessary to observe/prove that.
Whether our human perception/processing masks this characteristic...our measuring techniques can't fully display it....or how much relative weight we place on this aspect of the radiation, is another topic. A pseudo-line-source like a Maggie speaker will exhibit a comb-filtering aspect to its response if measured in a free-field environment. I don't care what kind of user impulse-response measurements "disprove" that theory. :)

I'm not making any bold statements here....just pointing out the obvious.

I believe "image height rendition" of this sort is "large"ly unnatural and that a point-source radiation is more realistic in a domestic environment. So, where does that leave us? :)

A left turn here (as you like to do often) to a different aspect of this. Obviously Maggies don't have this option, but you might consider why the power-tapering wiring configuration was adopted for the line-array design Jim put forward. :) I know he explains his reasoning in his paper, but think about that a little more. :)

Cheers,

Dave.

Edits: 04/03/15

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