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royj

Responses from royj

Sloped baffle
That's how I was presented this subject. A good link, thank you. Made me flash back to all the horrible homework involved. And then, as the math of physics became ever more advanced during grad school, one wound up using this math daily...Best,Roy 
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Ngjockey,I have looked at this site for very many years. The Soundwest site has enough errors to mislead someone relying upon it for 'basic information' and a bit of the math.Specifically:In its Section one, the author does not understand a tweete... 
Sloped baffle
Certainly, but a lot of other problems would be fixed. 
Sloped baffle
Sounds Real,For an eyeball estimate, the acoustic center is approximately where the voice coil former meets a cone or dome- the glue joint. But this is true only in the upper-middle range of any driver, whether tweeter, mid or woofer, where each o... 
Sloped baffle
Hi Unsound,Thank you for your thoughts. The use of multiple subs does smooth out standing-wave issues. The math used for the theory behind that is formed from adding together the simple sinewave/wavelength equations for standing waves you have see... 
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Sounds Real- You are indeed right about 'just tilting back the front face'. That can be enough to line up the acoustic centers of woofer/mid and tweeter, so that the drivers are possibly in their best positions to combine properly at your ears, no... 
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I forgot to mention a couple of things:When a driver is being run full-range with no crossover or Zobel, its changing impedance curve has no effect on its tone balance when using solid-state amps, but only on tube amps via interaction with their m... 
Sloped baffle
Hi to all,Bombaywalla, you ask-"So the question then becomes: Doesn't the presence of that inductive component of the driver impedance (especially in the case of the tweeter) cause a deviation from first order 6 db/octave behavior? And if so, to a... 
Sloped baffle
Again, I look forward to people coming to understand the concepts behind my waveform illustrations. This understanding is necessary to our discussion here, because we then have agreed on the nature of these concepts at hand and also on some vocabu... 
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Hello to all,I am happy to answer some questions on design. Before that, I need everyone to truly understand the simple difference between the definitions of phase and time coherence.Please open that earlier link to my illustration, and study the ... 
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Kiddman, no one benefits from your insults.If you did the math, or at least read my technical papers and relevant papers in the AES Journals, and above all hear what everyone we know hears, you would agree with me, no doubt.You could read my lette... 
Sloped baffle
Thank you! 
Sloped baffle
Hi all,Sorry to have delayed this post-- unexpected duties arose.I hope the majority will be served by some words below, along with a close study of the diagram I've posted at http://s1374.photobucket.com/user/greenmountainaudio/media/TimeCoherenc... 
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Gentlemen,I am glad to know my previous writings were appreciated, and it's become easier to explain since then.I can clarify some basic technical concepts above, without reference to our products, if you like.Please let me know.Thank you,Roy Johnson 
Afraid to buy new speakers
The closeness to the wall behind certainly boosts any speaker's bass loudness, as I am sure you know. And many speakers are designed with midrange and highs much louder than their bass output, because they 'are designed' for that wall to boost the...