Air space requirements for a alpine type r 12" dual voice coil
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swr-1242 12" type r, per sub specs
sealed = .7 - 1 cubes
13"x13"x12.5" (alpine rec enclosure)
ported = .75 - 1.75 cubes tuned to 33 hz
18"x13.5"x16.5"
the specs for a round port are 12" deep by 1.25" dia.
sealed = .7 - 1 cubes
13"x13"x12.5" (alpine rec enclosure)
ported = .75 - 1.75 cubes tuned to 33 hz
18"x13.5"x16.5"
the specs for a round port are 12" deep by 1.25" dia.
Last edited by 05civicFun; Aug 27, 2006 at 03:19 PM.
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