How much cubic feet does a 12" or 15" SUB typically consume ? - AVS Forum | Home Theater Discussions And Reviews
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Old 03-29-2014, 05:16 PM - Thread Starter
 
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Guess ? Anyone ?
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Old 03-29-2014, 05:19 PM
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.05 to .5 ft cubed, depends on a number of variables. I would assume . 1 for a 12 and .2 for a 15.

Are you concerned about enclosure volume being affected.

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Old 03-29-2014, 05:27 PM - Thread Starter
 
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.05 to .5 ft cubed, depends on a number of variables. I would assume . 1 for a 12 and .2 for a 15.

Are you concerned about enclosure volume being affected.

Yes. But if it's that small an amount it only effects my port tune 1hz or so.. I can live with that.
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Old 03-29-2014, 05:37 PM
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Yes. But if it's that small an amount it only effects my port tune 1hz or so.. I can live with that.

Yeah it really isn't much, that's why nobody really discusses it. If it was a concern most woofers would probably have their volume listed in their specs.

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Old 03-29-2014, 05:45 PM - Thread Starter
 
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Yeah it really isn't much, that's why nobody really discusses it. If it was a concern most woofers would probably have their volume listed in their specs.

Cool that is what I needed to know. biggrin.gif

So .5 for two 15" is pretty reasonable assumption... and .2 for a single 12" seems reasonable right ?
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Old 03-30-2014, 05:32 PM
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I think SI list the HT18 driver as 0.25 cu ft displacement: http://stereointegrity.com/index.php?id=60
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Old 03-30-2014, 05:35 PM
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Cool that is what I needed to know. biggrin.gif


So .5 for two 15" is pretty reasonable assumption... and .2 for a single 12" seems reasonable right ?

Yeah that would work, and even if you were off by a multiple of 2, it may change your response by a small percentage of a db

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Old 04-02-2014, 10:18 AM - Thread Starter
 
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Yeah that would work, and even if you were off by a multiple of 2, it may change your response by a small percentage of a db

If it's a small amount I can just guess at it and be ok biggrin.gif Thanks again for all the great replies!
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Old 04-02-2014, 10:30 AM
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https://www.parts-express.com/resources-woofer-selection-guide

Put the Guide in Driver size order and note: F3, SPL, and Box size required
It depends on your tradeoffs and compromises ( Low frequency extension, SPL and box size requirements )
Pick ONLY 2 and give up the other wink.gif
( Hoffman's Law )

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