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<blockquote data-quote="newusername" data-source="post: 3442431" data-attributes="member: 562064">The current through the conductor is not included in the equation for BL...that&#039;s still and always will be a function of the magnetic flux and length of coil in the gap.&nbsp; But it&#039;s hard to have any real force in an electromagnetic motor without current going through the coil, no?&nbsp; BL itself doesn&#039;t describe actual force of a motor...it describes the force potential or force factor, as it is often termed.I&#039;m not sure how Qts could be a contributing factor to Fs without actually being in the equation. //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif&nbsp; Perhaps you are confusing Fs with Fc, which is the resonant frequency of a sealed system, where Qts is certainly relevant.The only parameters that contribute or yield to any other parameter are:BLMmsCmsReSdRms (although this doesn&#039;t hold much relevance for subwoofers)Everything is calculated from those six parameters.&nbsp; There are also a couple of stand alone parameters (like Le or Xmax) but those six are what you need to get anywhere.</blockquote>

[QUOTE="newusername, post: 3442431, member: 562064"] The current through the conductor is not included in the equation for BL...that's still and always will be a function of the magnetic flux and length of coil in the gap. But it's hard to have any real force in an electromagnetic motor without current going through the coil, no? BL itself doesn't describe actual force of a motor...it describes the force potential or force factor, as it is often termed. I'm not sure how Qts could be a contributing factor to Fs without actually being in the equation. [IMG]//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif[/IMG] Perhaps you are confusing Fs with Fc, which is the resonant frequency of a sealed system, where Qts is certainly relevant. The only parameters that contribute or yield to any other parameter are: BL Mms Cms Re Sd Rms (although this doesn't hold much relevance for subwoofers) Everything is calculated from those six parameters. There are also a couple of stand alone parameters (like Le or Xmax) but those six are what you need to get anywhere. [/QUOTE]

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