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Magnet structures [message #27893 is a reply to message #27891]

Thu, 25 March 2004 15:42

Wayne Parham
Messages: 18787
Registered: January 2001

Illuminati (33rd Degree)

Here is an interesting document written by John Eargle that compares various magnet structures and what performance can be expected from them. A horn provides 10dB to 15dB gain and a similar reduction in distortion. But the geometry of the driver's magnetic flux can do that much or more where distortion is concerned.

Three magnetic structures are compared, each having physical symmetry, but each made with a different material or technology. One is an alnico magnet, the other a ferrite and the third is a ferrite magnet with a flux stabilization ring. So this shows what is gained by incorporating this structure. Each page is a high-resolution scanfile, so if your browser scales them down to a small size, you might right-click and save them to your local computers and print or view them with a paint program or image viewer.

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[Message index]

		Paging BillF, GraemeG and SwollenL - Massive hornsub By: DanR on Mon, 15 March 2004 11:09
		Re: Paging BillF, GraemeG and SwollenL - Massive hornsub By: DanR on Mon, 15 March 2004 11:59
		100dB/watt at 20 Hz is overkill. By: Bill Fitzmaurice on Mon, 15 March 2004 12:59
		Re: 100dB/watt at 20 Hz is overkill. By: DanR on Mon, 15 March 2004 14:04
		Re: 100dB/watt at 20 Hz is overkill. By: Bill Fitzmaurice on Mon, 15 March 2004 16:29
		Re: 100dB/watt at 20 Hz is overkill. By: Wayne Parham on Tue, 16 March 2004 17:12
		Re: 100dB/watt at 20 Hz is overkill. By: Bill Fitzmaurice on Tue, 16 March 2004 17:40
		Re: 100dB/watt at 20 Hz is overkill. By: Wayne Parham on Tue, 16 March 2004 22:58
		40hz even seems really impressive with PA By: Mike.e on Mon, 15 March 2004 18:06
		Re: 100dB/watt at 20 Hz is overkill. By: GraemeG on Tue, 16 March 2004 05:07
		Re: 100dB/watt at 20 Hz is overkill. By: Bill Fitzmaurice on Tue, 16 March 2004 06:59
		Magnum hornsub By: Wayne Parham on Mon, 15 March 2004 13:24
		Re: Magnum hornsub By: DanR on Mon, 15 March 2004 14:04
		Re: Magnum hornsub By: Wayne Parham on Mon, 15 March 2004 14:31
		MAG12 - Preliminary Announcement By: Wayne Parham on Tue, 16 March 2004 10:22
		hmm By: Mike.e on Tue, 16 March 2004 16:52
		Where are you? By: Bill Fitzmaurice on Tue, 16 March 2004 17:13
		New Zealand/. By: Mike.e on Wed, 17 March 2004 01:55
		Re: hmm By: Wayne Parham on Tue, 16 March 2004 18:01
		My philosophy is- By: Mike.e on Wed, 17 March 2004 01:59
		Re: MAG12 - Preliminary Announcement By: DanR on Wed, 17 March 2004 10:33
		Re: MAG12 - Preliminary Announcement By: jason on Wed, 17 March 2004 13:37
		Re: MAG12 - Preliminary Announcement By: hulkss on Thu, 18 March 2004 17:47
		Re: MAG12 - Preliminary Announcement By: bill W. on Thu, 18 March 2004 21:52
		Driver Frame Diameter By: hulkss on Sat, 20 March 2004 10:07
		Re: Driver Frame Diameter By: Wayne Parham on Sat, 20 March 2004 21:51
		Project News By: Wayne Parham on Thu, 25 March 2004 15:32
		Magnet weight By: jason on Sun, 21 March 2004 18:43
		Re: Magnet weight By: Wayne Parham on Sun, 21 March 2004 19:15
		Magnet structures By: Wayne Parham on Thu, 25 March 2004 15:42
		B12 - Eminence requests that the driver formerly known as MAG12 be called the B12 instead By: Wayne Parham on Wed, 22 September 2004 21:50
		Re: Paging BillF, GraemeG and SwollenL - Massive hornsub By: GraemeG on Tue, 16 March 2004 05:23
		Re: Paging BillF, GraemeG and SwollenL - Massive hornsub By: Wayne Parham on Tue, 16 March 2004 10:37

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