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In Reply to: RE: All of the popular dipole woofers systems I've seen posted by E-Stat on May 23, 2021 at 08:48:20
There are a number of speakers that use a single driver. It all depends upon how much output capability is required.
In Jazzman's case, the single driver would seem to be adequate based on the limited SPL ability the main speaker has. It is a symmetrical configuration, apart from the driver itself.
Other than the phase distortion of the crossover, there is nothing less coherent about this approach than a large, full-range panel.
Large, full-range panels are not inherently coherent either since there is phase distortion associated with differing path distances, in the near-field.
There isn't any speaker that's truly coherent (using the strict acoustic definition.) They would have to be much smaller.....and thus not able to produce adequate bass.
Headphones are your best bet if you're really into "coherency." :)
Dave.
Follow Ups:
I may be mistaken, but I believe the Quad 63---owing to it's progressive circles of ESL driver segments---is able to produce very coherent sound. But coherency isn't everything; some still prefer the original Quad ESL to the 63.
Other than the phase distortion of the crossover...
along with a couple other factors. ;)
My choices are driven by what I hear - as opposed to what I read. YMMV.
"Coherence" being a subjective thing for you. I understand.
As I've said many times, I'm not (and neither is anyone else) equipped to argue with somebody's subjective evaluation.
However, the physics are undeniable.
Dave.
Neither speculation nor the use of circular reasoning is used in my evaluation process.
Good day!
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