Outline SUB218 High Power Ground-Stackable Subwoofer – 2 x 18″

Outline SUB218 High Power Ground-Stackable Subwoofer – 2 x 182

Experience seismic bass and unrivalled low-frequency power with the Outline SUB218 High Power Ground-Stackable Subwoofer. Engineered to deliver chest-punching output up to 148.5 dB SPL, this powerhouse is the ultimate choice.

Earth-Shaking Low End

Firstly, the SUB218 features two precision-matched 18″ long-excursion woofers that move massive air volumes with minimal distortion. This means you get authoritative sub-bass that perfectly tracks electronic kicks and acoustic drums. Thus, maintaining the dynamic nuances that keep every audience member engaged and energized.

Energy Retentive Porting Advantage

Moreover, with Outline’s proprietary Energy Retentive Porting (E.R.P.) design, airflow inside the enclosure is optimized to reduce turbulence and port compression. More amplifier power converts into usable sound energy, resulting in tighter transients, deeper bass response, and improved efficiency compared to conventional subwoofers.

Rugged, Road-Ready Construction

The SUB218 withstands the rigors of touring and permanent installation. Its epoxy powder-coated steel grille, recessed handles, and 16 M8 mounting points allow seamless integration with Outline line-array or point-source systems. Therefore, making setup quick and hassle-free.

Key Features

• Dual long-excursion 18″ woofers generating up to 148.5 dB SPL
• Exclusive E.R.P. porting for enhanced airflow and efficiency
• Extended low-frequency response down to 28 Hz
• Durable Baltic birch enclosure with black polyurea coating
• Ground-stackable design with 16 M8 threaded installation points