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Old 21st July 2014, 12:12 PM   #1
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Default Low Rms Midrange... mechanical resistance

considering the factor of low Rms which is so called as mechanical resistance or the ability of the driver which resists its cone motion with some factor so called mechanical resistance.

Case 1: lets consider that we have a midrange driver with very loose suspension but with lower Qts and hence we might have the driver reacts more for the micro details.

Case 2: lets consider we have the midrange with super stiff suspension but still having lower Qts managing more driver force but when you consider this case the microdetails seems to be lost.

What do you say about this?

For a proper midrange is it better to have loose suspension?
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Old 21st July 2014, 10:38 PM   #2
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Old 22nd July 2014, 06:17 AM   #3
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i did the simulations and got for 6.5inch midrange driver the -3db is at 105Hz and its flat from 200Hz and up.

Very low mechanical resistance as low as 0.02Kg by the formula Rms=(2Pi x Fs x Mms)/Qms
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Old 22nd July 2014, 06:22 AM   #4
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Magnet system is Neodymium here there is an advantage so the only application where the cone gets stabilized will be only through the electrical damping than the mechanical damping.
In deed i had one neodymium midrange which sounds fantastic the best when it comes to the natural tones and also all the nano details.
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Old 22nd July 2014, 09:04 AM   #5
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For bass freqs, high Qms will usually only have a slight effect on Qts. It's the electrical resistance that provides most of the friction. In the kHz range, speaker cones tend to break up into partial oscillations, so you're no longer dealing with one large cone mass, but smaller masses. In that area you probably want the surround to be smaller, softer and lighter than what's needed for bass.
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