Tool for producing an LCR network that = a speaker+box?
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 Multi-Way Conventional loudspeakers with crossovers

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 26th May 2004, 09:21 AM #1 CeramicMan   diyAudio Member   Join Date: Nov 2003 Location: Brisbane, QLD Tool for producing an LCR network that = a speaker+box? Where can I get some software/.xls/calculator that creates an RLC network that emulates any particular loudspeaker, given the T/S parameters and box size? Basically I'd like to be able to model the shape of a speaker's impedance curve with a few Ls and Cs and Rs. Thanks! CM
 26th May 2004, 09:29 AM #2 Svante   diyAudio Member     Join Date: Feb 2004 Location: Stockholm The impedance will be Re in series with Le (which is lossy) in series with a parallel RLC resonance circuit. In this parallel circuit R= (Bl)^2 / Rms L= (Bl)^2 * Cms C= Mms / (Bl)^2 Where Cms is the compliance of the driver, Mms is the total moving mass of the driver, and Rms is the total mechanical resistive losses of the driver. In case of a closed box, it can be seen as if the box modifies Rms and Cms, so the effect of a closed box can be included by changing these values. Other kinds of boxed will need another type of circuit diagram than this. HTH __________________ Simulate loudspeakers: Basta! Simulate the baffle step: The Edge
 27th May 2004, 02:39 AM #3 catapult diyAudio Member   Join Date: Dec 2002 Location: Planet Earth Siegfried Linkwitz has a sketch of the electro-mechanical model of a sealed woofer on his web page. Subwoofer design

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