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Re: Altec 902 / Edgarhorns: compensation experiments [message #17673 is a reply to message #17671]

Thu, 24 March 2005 21:17

Wayne Parham
Messages: 18737
Registered: January 2001

Illuminati (33rd Degree)

My experience with the round 650Hz tractrix horns Edgar sells is that they need 8dB compensation above 8kHz with an Eminence PSD2002 and 12dB compensation above 4kHz with a JBL 2426.

JBL 2426 on Edgar round 650Hz tractrix horn

Start EQ around 4kHz at 6dB/octave so that there's some boost at 8kHz and full augmentation at 16kHz. The collapsing DI of the tractrix horn provides some EQ, but not enough to make response flat above 8kHz with either the JBL 2426 or the Eminence PSD2002.

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[Message index]

		Altec 902 / Edgarhorns: compensation experiments By: Floyd Andrews on Thu, 24 March 2005 17:13
		Re: Altec 902 / Edgarhorns: compensation experiments By: Wayne Parham on Thu, 24 March 2005 21:17
		Thanks, Wayne! By: Floyd Andrews on Fri, 25 March 2005 09:53
		Series and Shunt Resistance By: Wayne Parham on Fri, 25 March 2005 12:38
		Re: Series and Shunt Resistance By: spkrman57 on Sun, 27 March 2005 11:07
		Uniform DI verses Collapsing DI By: Wayne Parham on Sun, 27 March 2005 15:34
		Wish i understood everthing you said... By: spkrman57 on Tue, 29 March 2005 12:32
		Re: Directivity Index, Collapsing DI, etc. By: Wayne Parham on Tue, 29 March 2005 14:45
		I understand a little bit better now! By: spkrman57 on Wed, 30 March 2005 12:01
		Re: I understand a little bit better now! By: Wayne Parham on Wed, 30 March 2005 17:58
		Re: I understand a little bit better now! By: spkrman57 on Thu, 31 March 2005 06:35
		Re: I understand a little bit better now! By: Wayne Parham on Thu, 31 March 2005 07:10
		Re: I understand a little bit better now! By: Bill Martinelli on Thu, 31 March 2005 20:28
		Re: Directivity vs Omni-directional By: GarMan on Thu, 31 March 2005 07:39
		Uniformity By: Wayne Parham on Thu, 31 March 2005 08:07
		Re: Directivity vs Omni-directional By: Mike.e on Wed, 06 April 2005 19:58
		Re: Series and Shunt Resistance By: Floyd Andrews on Mon, 28 March 2005 19:19
		Re: Series and Shunt Resistance By: Floyd Andrews on Mon, 28 March 2005 19:25
		Re: Series and Shunt Resistance By: Wayne Parham on Mon, 28 March 2005 20:41

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