Vented Box Mounting
Almost as easy to build as the sealed box, the vented or ported enclosure can give you more output at certain bass frequencies. Although this design has an output advantage at some frequencies it also has a sharper rolloff characteristic which will only affect the lowest of bass frequencies. Overall a correctly designed vented enclosure will have some "free" output provided by the port itself.
One major disadvantage to the vented design is the "unloading" of the woofer at very low frequencies. At a frequency
Since the peak pressure inside a vented enclosure can actually be higher than that of a sealed box, the same precautions must be taken to assure that the enclosure is rigid and sealed around all the joints.
Recommended vented enclosure volume ranges
1.75cf for the C10,
Below are specifications for a simple compact vented box for each sub.
Compact |
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Model Enclosure | Woofer | A | B | C | Port |
Volume | Cutout | panel | panel | panel |
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Comp 8 .8 cf | 8x15” | 3”dx7”L | |||
Comp 10 1.5 cf | 12x18" | 18x15" | |||
Comp 12 1.75 cf | 14x20" | 20x13" | |||
Comp 15 3.5 cf | 6"dx9"L |
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