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Re: Subwoofer project update [message #44269 is a reply to message #44265]

Wed, 31 March 2004 18:30

hulkss
Messages: 15
Registered: May 2009

Chancellor

A .75" ID vent is plenty. The cone displacement will still pump the same volume of air. Actually, if the vent is too big, the air will mostly just go back and forth in the vent and not get pumped out and replaced with cooler air. If you look at the power spectrum of audio by far most of the energy on average is up at 60-80 Hz where the cone excursion in the horn at high power is only about 2mm.

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[Message index]

		Subwoofer project update By: Wayne Parham on Tue, 30 March 2004 05:18
		Re: Subwoofer project update By: hulkss on Tue, 30 March 2004 19:08
		Re: Subwoofer project update By: Adrian Mack on Wed, 31 March 2004 02:26
		Re: Subwoofer project update By: Wayne Parham on Wed, 31 March 2004 08:29
		Re: Subwoofer project update By: Wayne Parham on Wed, 31 March 2004 09:40
		Re: Subwoofer project update By: Adrian Mack on Wed, 31 March 2004 16:15
		Re: Subwoofer project update By: Wayne Parham on Wed, 31 March 2004 16:32
		Re: Subwoofer project update By: Tako Tamas on Sat, 03 April 2004 04:40
		Re: Subwoofer project update By: Wayne Parham on Sat, 03 April 2004 09:40
		Re: Subwoofer project update By: hulkss on Wed, 31 March 2004 18:37
		Re: Subwoofer project update By: hulkss on Wed, 31 March 2004 18:30
		Re: Subwoofer project update By: Wayne Parham on Wed, 31 March 2004 18:58
		Re: Subwoofer project update By: hulkss on Wed, 31 March 2004 19:26
		Re: Subwoofer project update By: Wayne Parham on Wed, 31 March 2004 19:54
		Re: Subwoofer project update By: hulkss on Wed, 31 March 2004 22:15
		Re: Subwoofer project update By: Wayne Parham on Thu, 01 April 2004 05:26
		Re: Subwoofer project update By: Wayne Parham on Thu, 01 April 2004 09:09
		Re: Subwoofer project update By: hulkss on Fri, 02 April 2004 17:29
		Re: Subwoofer project update By: Wayne Parham on Fri, 02 April 2004 17:41
		Reducing vent size By: Adrian Mack on Fri, 02 April 2004 19:14
		But...... By: Adrian Mack on Fri, 02 April 2004 19:19
		Re: But...... By: Wayne Parham on Sat, 03 April 2004 09:27
		Re: Subwoofer project update By: hulkss on Wed, 31 March 2004 18:45
		Re: Subwoofer project update By: Wayne Parham on Wed, 31 March 2004 19:00

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