Custom Box Plan — 2020 Honda Accord, Dual Orion HCCA 12s

A complete custom subwoofer box plan, ready to build. Designed for a 2020 Honda Accord trunk running two Orion HCCA 12-inch subs — 4.32 cu ft net, 34 Hz slot-port tune, full cut list, double-wall build directions, amp settings, and wiring. If you're running this setup, this is your box.

Done right, down to the math.

Check out our other DATBOOM manuals: Capacitor Myths (free with code DATBOOMFREE) • Do I Need a Bigger Alternator? • Setting Your Gains Right • Lithium Batteries for Car Audio • Advanced Lithium for Car Audio • Subwoofer Box Building 101