box volume?

[95Prober 10+ year member]

quick question. when a maunfactuer recomendeds , say for example, 1.0 cu.ft airspace for a sub, does that mean it INCLUDES the sub displacement ex: .91 + .09 cu.ft for displacement... OR

You must make the TOTAL INTERIOR 1.0 + 0.9 = 1.09 cu.ft ?? thanks

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[squeak9798 5,000+ posts]

It will be a NET cubic volume number. So, if they recommend 1cuft, and the sub displaces .09cuft, you'd need to build a 1.09cuft enclosure.