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Old 10th March 2007, 07:21 PM   #1
lovitz is offline lovitz  Canada
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Default Volume Displacement Calculation

How does one calculate the volume displacement of the driver in a vented enclosure?

Bassbox Pro is giving me this option, but I can't find anything on how to calculate it.

Thanks.
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Old 10th March 2007, 10:28 PM   #2
Svante is offline Svante  Sweden
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Default Re: Volume Displacement Calculation

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Originally posted by lovitz
How does one calculate the volume displacement of the driver in a vented enclosure?

Bassbox Pro is giving me this option, but I can't find anything on how to calculate it.

Thanks.
I'm not sure I fully understans the question, but the volume displacement of the driver is always Sd*X, where X is the excursion of the cone (which is limited to Xmax).

The volume displacement of the system is larger around the helmholtz frequency, since most of the volume displacement is taken care of by the port. There is no simple formula that covers the entire frequency range for the system volume displacement as a function of driver excursion.
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Old 10th March 2007, 10:33 PM   #3
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Default Re: Volume Displacement Calculation

or are you asking how much room the driver takes up in the box?
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Old 10th March 2007, 11:09 PM   #4
lovitz is offline lovitz  Canada
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oh don't tell me it's that easy Cal....haha or is it?
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Old 10th March 2007, 11:45 PM   #5
Svante is offline Svante  Sweden
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Ah, so there is a box i bassbox to fill in the volume displacement of the driver, and you are wondering what to put there?

Ok, could be that it is the room that the driver takes... Silly me.
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Old 11th March 2007, 12:52 AM   #6
lovitz is offline lovitz  Canada
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I think your right. I saw volume and liters and thought it was something different.

So all I have to do is convert millimeters to liters for that value??


Thanks again guys!
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