A term used in car audio to reference a forward facing subwoofer alignment that completely isolates the trunk from the cabin of the vehicle so as not to introduce cancellation from the front and rear waves intermingling.
-"what kind of build do you have?"

- "it's a trunk wall with a pair of DSS Savage 12's."

- "that's not a wall."

- "go fuck yourself."
by TaylorFade August 1, 2016
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