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Re: Pi speaker design and measurement

John -

You know, you've thrown the word "fraud" around quite a bit here. In fact, that was the opening idea of this thread.

But where "fraud" is concerned, you suggest familiarity with subjects you know nothing about, and act as though you have knowledge of documents you've never read. Recent examples include the paper by Dr. Toole, where you first suggest that you have an intimate familiarity with the subject, and the later admit you didn't even read the article before commenting on its contents.

As an aside, I understood this document to express views that were very sensible, but from your stated views, I wondered why you hadn't objected to the idea of spatial averaging and scoffed at his comments about waterfall plots and the like.

So just in case you haven't really read the π Crossover Document, I'll provide the link again here.

To make a case that time alignment is important is one thing, but to suggest that those who don't agree with you are "frauds" is irresponsible in the extreme. Most of the industry sides against you in this matter, because most of the industry mounts their speakers on a single baffle.

Now then, if you want to discuss crossover design with me, that's fine. If you're going to do so, then start. Get out the slide rule and roll up your sleeves. But stop this nonsense of making unfounded accusations, hoping to hide behind the time alignment issue.

You made a claim that a Butterworth crossover doesn't "sum flat." So rather than speak about this vaguely, how about you quantify yourself.

Anything else makes your statements inaccurate, deceptive, even fraudulent.

So quantify your claims.

Wayne Parham


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