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fl, fb and fh [message #42445 is a reply to message #42442]

Fri, 12 September 2003 15:18

Wayne Parham
Messages: 18835
Registered: January 2001

Illuminati (33rd Degree)

The most succinct way I can describe bass-reflex behavior is to say that the Helmholtz resonator has influence between fb and fh. It reduces cone excursion between fh and fb and augments bass output between fb and fl. Ported systems can generally be made to have a lower cutoff in a smaller box than sealed systems.

The terms fl, fb and fh are discussed further in the posts called "Behaviour of vented loudspeaker systems" and "Measure impedance."

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[Message index]

		Subwoofer Group Delay and such. Long post, but I hope its interesting, maybe :P By: Adrian Mack on Fri, 12 September 2003 02:13
		Aren't we By: mollecon on Fri, 12 September 2003 05:59
		Possibly... but heres another thought By: Adrian Mack on Fri, 12 September 2003 10:28
		An attempt at an answer... By: mollecon on Fri, 12 September 2003 13:03
		fl, fb and fh By: Wayne Parham on Fri, 12 September 2003 15:18
		Impedance Peaks relating to damping and GD By: Adrian Mack on Fri, 12 September 2003 17:03
		A short comment. By: mollecon on Fri, 12 September 2003 19:35
		An even shorter comment By: Adrian Mack on Fri, 12 September 2003 22:37
		Choices and optimizations By: Wayne Parham on Fri, 12 September 2003 23:28
		Re: Choices and optimizations By: Adrian Mack on Sat, 13 September 2003 01:25
		Re: Choices and optimizations By: Wayne Parham on Sat, 13 September 2003 03:39
		Cool. By: Adrian Mack on Sat, 13 September 2003 08:35
		Re: Cool. By: Wayne Parham on Sat, 13 September 2003 17:22
		Re: Cool. By: Adrian Mack on Sun, 14 September 2003 00:45
		Re: Cool. By: Wayne Parham on Sun, 14 September 2003 01:37
		Re: Cool. By: Adrian Mack on Mon, 15 September 2003 01:22
		Ah, I figured most of it out By: Adrian Mack on Mon, 15 September 2003 01:40
		Pneumatic loading By: Wayne Parham on Mon, 15 September 2003 07:14
		Re: Pneumatic loading By: Adrian Mack on Mon, 15 September 2003 08:14
		Re: Pneumatic loading By: Wayne Parham on Mon, 15 September 2003 08:44
		Sowy for budging in again By: mollecon on Sun, 14 September 2003 16:39
		Horn phase By: Wayne Parham on Mon, 15 September 2003 02:22
		Re: Horn phase By: Adrian Mack on Mon, 15 September 2003 06:32
		Re: Horn phase By: Wayne Parham on Mon, 15 September 2003 07:54
		Almost... By: mollecon on Sat, 13 September 2003 16:33
		Electrical, mechanical and pneumatic properties By: Wayne Parham on Sat, 13 September 2003 00:25

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