How to Calculate volume of enclosure for a mid-range driver? - diyAudio
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Old 4th January 2011, 01:42 PM   #1
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Default How to Calculate volume of enclosure for a mid-range driver?

I know it is able to calculate the volume of the bass driver from its T/S parameters. Closed or Vented.

How about the mid-range driver if I cross it at 250Hz(High-Pass) in a closed box?

Or it is not so important because it just deal with the frequency above 250Hz?

Thanks!
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Old 4th January 2011, 02:07 PM   #2
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As long as there's no bump in the frequency range you'll use the speaker in (or just outside), then you should be fine.
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Old 4th January 2011, 02:52 PM   #3
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I usually design it to always have a rising excursion at lower frequencies, so no hump in the excursion graph. Preferably smooth in appearance.
I also like total Q to be lower than 0.5
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Old 4th January 2011, 08:28 PM   #4
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you can model this in Unibox, it is important because it affects the fall-off rate & this interacts with your crossover slope. However it's not critical unless the box is too small, when you start to get an LF hump.
For me, the internal damping & shape of the rear wall are just as important, to avoid internal reflections
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Impedance varies with frequency, use impedance plots of your drivers and make crossover calculations using the actual impedance of the driver at the crossover frequency
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