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DI matching [message #17606 is a reply to message #17598]

Mon, 28 February 2005 13:46

Wayne Parham
Messages: 18688
Registered: January 2001

Illuminati (33rd Degree)

This is called DI matching, and it is a good practice, in my opinion. You run the midwoofer up through the vocal range which does two things: It allows the voice fundamentals to be handled by a single driver and sets the crossover point in the overtone range, which is a natural sounding place to split, in my opinion. It also matches the directivity of the midwoofer to that of the horn tweeter. A 90x40 horn has DI of about 12, and that's what a 12" or 15" speaker has between 1kHz and 2kHz. It is collapsing past 10 approximately where wavlength equals diameter. See chapter 3 of Augspurger's JBL Sound System Design Manual for more information.

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[Message index]

		Distortion mechanisms By: Wayne Parham on Wed, 23 February 2005 15:41
		Re: Distortion mechanisms By: Mike.e on Wed, 23 February 2005 18:05
		Re: Distortion mechanisms By: Earl Geddes on Wed, 23 February 2005 19:17
		Clarification By: Mike.e on Thu, 24 February 2005 14:08
		Re: Clarification By: Earl Geddes on Thu, 24 February 2005 14:52
		Re: Clarification By: Mike.e on Sat, 26 February 2005 23:45
		Re: Clarification By: Earl Geddes on Sun, 27 February 2005 11:00
		Re: Clarification By: Mike.e on Sun, 27 February 2005 20:29
		Re: Clarification By: Earl Geddes on Thu, 24 February 2005 15:07
		So you are saying By: akhilesh on Fri, 25 February 2005 14:11
		Re: So you are saying By: Earl Geddes on Fri, 25 February 2005 14:39
		Re: So you are saying By: akhilesh on Mon, 28 February 2005 08:14
		Re: So you are saying By: Earl Geddes on Mon, 28 February 2005 08:49
		Re: So you are saying By: akhilesh on Mon, 28 February 2005 10:51
		Re: So you are saying By: Earl Geddes on Mon, 28 February 2005 11:36
		Thanks Wayne & Earl By: akhilesh on Mon, 28 February 2005 14:34
		DI matching By: Wayne Parham on Mon, 28 February 2005 13:46
		Re: So you are saying By: Mark Seaton on Mon, 28 February 2005 10:52
		Re: So you are saying By: Earl Geddes on Mon, 28 February 2005 11:29
		I checked up Floyd Toole's work By: akhilesh on Mon, 28 February 2005 11:12
		Re: I checked up Floyd Toole's work By: Earl Geddes on Mon, 28 February 2005 11:42
		CD versus H/LD By: akhilesh on Mon, 28 February 2005 14:32
		Re: CD versus H/LD By: Earl Geddes on Mon, 28 February 2005 14:54
		Re: CD versus H/LD By: akhilesh on Mon, 28 February 2005 15:49
		Re: CD versus H/LD By: Earl Geddes on Mon, 28 February 2005 15:58
		Re: CD versus H/LD By: Earl Geddes on Mon, 28 February 2005 15:52
		Re: CD versus H/LD By: akhilesh on Mon, 28 February 2005 16:23
		Hey, I just saw your website By: akhilesh on Mon, 28 February 2005 11:24
		Re: Distortion mechanisms By: Manualblock on Wed, 23 February 2005 19:10
		Re: Distortion mechanisms By: Wayne Parham on Wed, 23 February 2005 19:33
		Re: Distortion mechanisms By: akhilesh on Thu, 24 February 2005 12:42
		Re: Distortion mechanisms By: Wayne Parham on Thu, 24 February 2005 13:16
		my rant By: pgolde on Fri, 25 February 2005 13:56
		And what about tubes ? By: Eric Mainardi on Wed, 02 March 2005 04:51
		Re: And what about tubes ? By: Wayne Parham on Wed, 02 March 2005 13:23
		Best of both worlds By: wunhuanglo on Thu, 03 March 2005 02:30
		Another link By: akhilesh on Thu, 03 March 2005 05:59
		Some useful links By: Eric Mainardi on Fri, 04 March 2005 02:38
		Re: Some useful links By: Wayne Parham on Fri, 04 March 2005 02:59

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