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Re: Example please?

Example of what?

Responses to numbers:

1. All driver diaphragms resonate. All have a fundamental, the Fs. All exhibit some form of breakup at higher frequencies. All have limits to displacement. None of this relates to what it takes to time align two drivers. None of it prevents a hard coned driver from being used in a "phase coherent" design. Each individual driver has to be analyzed for proper use, they all differ in many respects.

2. Maybe your terminology is part of the problem. What do you mean precisely by "triggered by excursion"? What is triggered by excursion? All drivers have distortion related output at essentially all frequencies. The drive level causes differing levels of distortion. This is true of all in-band signals as well as any out-of-band (stop-band) signals. Up to Xmax they will be reasonable. Exceed Xmax, they all distort more. It's primarily the motor design that determines this, not the diaphragm material. The crossover design simply has to take this into account.

3. The point of this would be...? To invalidate some usages? This is why a designer chooses the crossover type/Fc for any driver and/or box tuning if not a tweeter. The distortion components and breakup take this into consideration.

4. Again, the phase of whatever resonance you're referring to is really not material. To what specific "resonance" do you refer?

None of this addresses your original points, all of which were factually incorrect. It would appear that you're primarily leading up to your last paragraph in this post.

That last paragraph is also factually incorrect. Your veracity has nothing to do with my disagreeing. Making your case as forcefully as you did when it was so full of inaccuracy is not just a bit frustrating to read when others may think it correct if no addressed.

And please, read some of the papers at the link provided, especially the one named "Time/Phase Alignment Terminology". A number of them require Word, so you may have to download the free Word Reader from MS if you don't have Word.

dlr


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