Why are Cube Cabinets so popular in Subs? - diyAudio
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Old 10th July 2016, 12:41 PM   #1
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Default Why are Cube Cabinets so popular in Subs?

It seems commonly accepted that cube-shaped cabinets are one of the least desirable cabinet shapes for speakers, and yet it seems to be one of the most common shapes for subwoofers. Are lower frequencies less susceptible to the negative effects of cubed cabinets, or is there something else that would explain why the cube shape is so common in subwoofer cabinets?

Just curious.
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Old 10th July 2016, 12:59 PM   #2
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Standing waves develop when the distance between two parallel walls is equal to half a wavelength. For 60 cm that's roughly 280 Hz, well above the crossover point of most subs.

As the distance between two parallel walls becomes smaller, the standing wave frequency increases. Majking it rarely a problem for subs, no matter how many parallel walls a cabinet has.

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Old 10th July 2016, 01:10 PM   #3
Ron E is offline Ron E  United States
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Also, lowest surface/volume ratio means lowest material costs for a cube.

Interior enclosure shape also matters very little for upper range speakers because of damping material.
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Old 10th July 2016, 01:30 PM   #4
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That helps a lot. Thanks.
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Old 10th July 2016, 10:19 PM   #5
Erknie is offline Erknie  Australia
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Also it's common to stack two on top of each other for more output, and cube shapes stack well.
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Old 10th July 2016, 10:21 PM   #6
Face is offline Face  United States
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Quote:
Originally Posted by Erknie View Post
Also it's common to stack two on top of each other for more output, and cube shapes stack well.
That's old school thinking. That practice does little to help smooth in room bass response.
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Old 10th July 2016, 10:29 PM   #7
sreten is offline sreten  United Kingdom
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Hi,

Its not just standing waves, the walls physical resonances, which
for a speaker you would want to spread about, are also generally
well above the frequency range of the subwoofer, so near cubic
is really the only sensible option for a near optimised sunwoofer.

rgds, sreten.
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