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Re: altec gear in a pi box?? [message #37534 is a reply to message #37530]

Sat, 27 July 2002 00:57

Wayne Parham
Messages: 18748
Registered: January 2001

Illuminati (33rd Degree)

Check out the "Pi Alignment Theory" document. This shows what I do to align a cabinet - To pick a size and to tune it to specific frequency. It's based largely on the application of a Helmholtz resonator to provide specific frequency-sensitive loading for the woofer diaphragm. This can be likened to having a mass on a spring, and damping it with another mass on a spring which combines together in a complementary fashion.

I don't know specifically where to find more information on the internet, but I suspect there's tons of it out there. First, do a search for "Helmholtz" to find information on his work. Then, do a search for "Thiele" and "Small" for information about theirs. I'm not sure you'll find the work of Brian Davies online, but I've got a copy of his excellent implementation paper, which I can make available if you're interested.

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[Message index]

		altec gear in a pi box?? By: EZ_Angus on Thu, 25 July 2002 19:08
		π speakers with Altec parts By: Wayne Parham on Thu, 25 July 2002 19:45
		the 500Hz. xover "myth" By: Sam P. on Fri, 26 July 2002 05:19
		Re: the 500Hz. xover "myth" By: Tom Brennan on Fri, 26 July 2002 07:11
		Tommy, I based my remarks upon Altec's By: Sam P. on Fri, 26 July 2002 08:32
		Re: altec gear in a pi box?? By: EZ_Angus on Fri, 26 July 2002 08:01
		Re: altec gear in a pi box?? By: Wayne Parham on Fri, 26 July 2002 12:52
		Re: altec gear in a pi box?? 825 cabinet By: Tom Brennan on Fri, 26 July 2002 20:22
		Re: altec gear in a pi box?? By: EZ_Angus on Fri, 26 July 2002 15:58
		Re: altec gear in a pi box?? By: Wayne Parham on Sat, 27 July 2002 00:57

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