TRU SPEC Elite Prefab Kicker Solo X 12" L7X Sub Up Port Back Subwoofer Enclosure

Dialed in to the manufacturer's specifications, the TRU SPEC Elite Prefab 12" Up Port Back enclosure is a subwoofer-specific, prefab solution built for Kicker Solo X L7X 12" drivers. Its MDF construction, 3.00 ft³ net internal volume, and 31 Hz tuning are tailored for tight, usable bass in a back-ported, up-port configuration.

• Target subwoofer: 12" Kicker Solo X L7X — designed to house and perform with that exact driver, ensuring proper enclosure volume and mounting compatibility.
• Enclosure type / Configuration: TRU SPEC Elite Prefab, Up Port Back — a prefabricated enclosure configured with an up-ported design facing the back of the vehicle for targeted bass delivery.
• Internal volume: 3.00 ft³ net — provides a defined air mass for the driver to move, influencing low-end extension and efficiency.
• Box exterior dimensions: 34.00" W × 14.00" H × 22.90" D — footprint to help plan fitment in trunk or cargo areas.
• Material & thickness: MDF, 0.75" walls — a dense, rigid construction intended to minimize panel flex and maintain enclosure integrity under load.
• Tuning frequency: 31 Hz — sets the port’s effective resonant frequency, shaping where the bass starts to roll off and how low it can go.
• Port area: 45.50 in² — the cross-sectional size of the port, affecting air flow and tuning stability at the target frequency.
• Construction details: Double baffle, triple flush baffle, bracing, and 45's — combined to increase rigidity and reduce unwanted panel resonance for cleaner bass.
• Shipping weight: 90 lbs — adds mass to the enclosure, reflecting its solid build and helping to stabilize installation in the vehicle.

Benefits: In a typical car audio setup, this enclosure provides a precise, prefab solution for the Kicker Solo X L7X 12" sub, offering a defined 3.00 ft³ internal volume and 31 Hz tuning that support deep, controlled bass without settling into flabby low-end. The up-port-back configuration, 45.50 in² port, and robust 0.75" MDF construction with internal bracing and multiple baffles contribute to rigidity and reduced distortion under power, helping the system deliver tighter transients and clearer midbass in a compact footprint. The prefab design also shortens install time while ensuring consistent performance across installations.