OK, what type of distortion is when drivers are emanating same/similar frequencies from different areas of the diaphragm?
Yes, but the point is to be able to stiffen a much larger area of the diaphragm to a higher frequency before it's no longer pistonic to keep from the above happening, or at least much reduced.
GM
Yes, but the point is to be able to stiffen a much larger area of the diaphragm to a higher frequency before it's no longer pistonic to keep from the above happening, or at least much reduced.
GM
Wheres the data that shows that increases in diffraction results in the higher contrast of dynamics?
I'm starting to think the lack of IMD within a system is a strong factor for the subject since a driver has such small excursion vs output, within a proper horn system...
http://www.gedlee.com/Papers/AES06Gedlee_ll.pdf
The lack of nonlinear distortion is usually leading to lower subjective loudness perception - until you try to talk to the one sitting next to you …..
Regards
Charles
The lack of nonlinear distortion is usually leading to lower subjective loudness perception - until you try to talk to the one sitting next to you …..
Regards
Charles
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This is one of the reason you see inwall monitors in big control rooms ( low diffraction, second main reason is the gain in low end as situation about BSC is inverse, you gain up to 6db for low end from 200hz approximately) and multiway system ( lower imd amongst other).
The one in the link below is a 4 way, all Tad drivers ( 2x15"+ 2x12"+ TH+ Et) i can't remember the xover points but the Et was used to get rid of the bad breakup of the 2" cd.
The low end is mono iirc. All driven by Bryston amps and BSS active filtering ( last time i visited the place it may have changed since). The CR is HUGE and the picture doesn't render the space well ( the desk is almost 5meter width).
Google Image Result for https://www.innamoramento.net/fichiers/galeries/annuaire/65183.jpg
The sound is not bad and can be very LOUD but it is more impressive looking than it sounded good to me.
The main issue being the SSL 9000j which make comb filter heaven at listening position.
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Dessenting View
1) Size is a principal determinant of a compression drivers cost, and output capacity at its low frequency bound. Also in this region, the suspension, has modes of its own.
2) The diameter of the moving sub-system is not the sole nor principal determinant of its high frequency response. Geometry and material(s) used, are far more important. WHG
3) To the exclusion of 1) above, equivalent HF performance may be achieved using diaphragm diameters ranging from 1.5" to 5".
WHG
1) Size is a principal determinant of a compression drivers cost, and output capacity at its low frequency bound. Also in this region, the suspension, has modes of its own.
2) The diameter of the moving sub-system is not the sole nor principal determinant of its high frequency response. Geometry and material(s) used, are far more important. WHG
3) To the exclusion of 1) above, equivalent HF performance may be achieved using diaphragm diameters ranging from 1.5" to 5".
WHG
In that case, I can attest that prosound oriented speakers in general and Altec/GPA components in various TL alignments in particular meets this with many dBs to spare.
GM
Example
Rhetorical question made earlier:
"Why does smaller voice coil reduce IMD?"
Off course by itself it does not.
WHG
Rhetorical question made earlier:
"Why does smaller voice coil reduce IMD?"
Off course by itself it does not.
WHG
Absorb all on this site and you too will be an expert: Quarter Wavelength Loudspeaker Design
Depends on the type, but is generally superior to vented and can be superior to sealed, though no 'free lunch', you pay in [much] larger cabs.
MLTL might could be used if ported, max flat impedance TL if sealed.
GM
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I had the KEF (Fig. 6, Alt units) version as a kit back in the mid 70's: http://www.keith-snook.info/wireles...e Transmission-line loudspeaker Enclosure.pdf
Still remember the excellent bass response that was deep, transient and non resonant. Had the wool fill too. Can't remember the exact kit number...
Still remember the excellent bass response that was deep, transient and non resonant. Had the wool fill too. Can't remember the exact kit number...
So by chance, I'm reading about the WESTMINSTER ROYAL....the first thought that came to mind was that when we discussed using a compression driver within a coaxial woofer....many people spoke of modulation introduced by the moving woofer/faux horn...yet the Tannoys are highly regarded... whats the deal?