Concrete Audio Ported Subwoofer Enclosure – 2×12″ Birch Wood Bass Box

Drive deeper, louder bass with the Ported Subwoofer Enclosure, engineered to house two 12″ subwoofers and deliver powerful low-frequency performance with enhanced efficiency. The ported (bass-reflex) design reinforces low bass tones by directing airflow through tuned ports, resulting in stronger, more impactful output compared to sealed boxes — perfect for car, truck, and custom audio installations.

Constructed from 3/4″ birch wood for rigidity and optimal acoustics, this enclosure includes oxygen-free copper wire screw-in terminal cups for secure connections and poly fill to help smooth resonance and improve sound quality. Designed for use with Concrete Audio C0 and C1 series 12″ subwoofers and similar drivers, this box is built for serious bass lovers and system upgrades.

Key Features:

• Subwoofer Fit: Designed for 2 × 12″ subwoofers

• Enclosure Type: Ported (bass-reflex) for deeper, louder bass

• Construction: Durable 3/4″ birch wood

• Terminals: Oxygen-free copper wire screw-in cups

• Internal Fill: Poly fill for resonance control

• Compatibility: Works with C0 and C1 series 12″ drivers

• Ideal For: Car and truck audio systems, custom builds