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Re: How do you calculate the optimal back chamber size for a frontloaded bass horn? [message #16578 is a reply to message #16577]

Thu, 03 June 2004 05:31

Bill Fitzmaurice
Messages: 335
Registered: May 2009

Grand Master

You have to be able to measure impedance. After the horn is complete mount the driver but leave the cabinet back off and run an impedance plot; there will be a peak at about 1/2 the driver Fs, which is the Fs(h). Put the cabinet back on and run another plot; that peak will ideally move up to the horn Fc. If it doesn't go up to the Fc the chamber is too big. If it goes above the Fc the chamber is too small.

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[Message index]

		How do you calculate the optimal back chamber size for a frontloaded bass horn? By: Peter Krojgaard on Thu, 03 June 2004 02:16
		Re: How do you calculate the optimal back chamber size for a frontloaded bass horn? By: Bill Fitzmaurice on Thu, 03 June 2004 05:31
		Thanks a lot and a few more questions! By: Peter Krojgaard on Thu, 03 June 2004 10:36
		Re: Thanks a lot and a few more questions! By: Bill Fitzmaurice on Thu, 03 June 2004 11:35
		Re: Thanks a lot and a few more questions! By: Peter Krojgaard on Thu, 03 June 2004 12:58

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