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Re: Confused about sensitivity information [message #16386 is a reply to message #16383]

Wed, 14 April 2004 17:30

Adrian Mack
Messages: 568
Registered: May 2009

Illuminati (1st Degree)

The Eminence sensitivity guide should be showing the real 1w/1m levels of the driver. The graph must be showing something else, maybe 2.83v or something. I'd trust the sensitivity guides numbers, which are the real numbers.

n0=(9.64*10^-10*(Fs_a^3*Vas_a))/Qes_a
=(9.64*10^-10*(118^3*5.8))/0.60
=0.0153

SPL 1w/1m= 112+10*LOG(n0)
= 112+10*LOG(0.0153)
= 93.85db 1w/1m

Reference efficiency converted to 1w/1m sensitivity, it corresponds to Eminences sensitivity guide, but not the graph. The graph must be measured under different conditions.

Adrian

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[Message index]

		Questions on Midrange Drivers By: GarMan on Mon, 12 April 2004 14:57
		Re: Questions on Midrange Drivers By: Adrian Mack on Mon, 12 April 2004 17:56
		Re: Questions on Midrange Drivers By: Adrian Mack on Mon, 12 April 2004 17:58
		Also consider this: By: Bill Fitzmaurice on Mon, 12 April 2004 20:35
		Re: Also consider this: By: GarMan on Mon, 12 April 2004 20:57
		Re: Questions on Midrange Drivers By: GarMan on Mon, 12 April 2004 20:53
		Re: Questions on Midrange Drivers By: Adrian Mack on Tue, 13 April 2004 08:11
		Re: Questions on Midrange Drivers By: Bill Wassilak on Tue, 13 April 2004 08:40
		Re: Questions on Midrange Drivers By: Adrian Mack on Tue, 13 April 2004 09:27
		Re: Questions on Midrange Drivers By: Bill Wassilak on Tue, 13 April 2004 09:48
		Beware predicted HF responses. By: Bill Fitzmaurice on Tue, 13 April 2004 15:11
		Re: Questions on Midrange Drivers By: GarMan on Tue, 13 April 2004 11:46
		Re: Questions on Midrange Drivers By: Adrian Mack on Tue, 13 April 2004 18:45
		Confused about sensitivity information By: GarMan on Tue, 13 April 2004 20:33
		Re: Confused about sensitivity information By: Adrian Mack on Wed, 14 April 2004 17:30
		Same measurement method by different results? By: GarMan on Thu, 15 April 2004 07:18
		Re: Same measurement method by different results? By: Adrian Mack on Thu, 15 April 2004 08:53
		Re: Same measurement method by different results? By: John Sheerin on Wed, 21 April 2004 06:18
		Re: Questions on Midrange Drivers By: Wayne Parham on Mon, 12 April 2004 21:04

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