Procella Audio - P18Si - 18″ Sealed Subwoofer

Procella Audio - P18Si - 18″ Sealed Subwoofer

The Procella Audio P18Si is a purpose-built reference subwoofer engineered for large-scale private cinemas and demanding screening rooms where scale, speed, and authority matter. Built around an 18" long-excursion driver in a sealed enclosure, it prioritizes control and transient precision over artificial boom, delivering bass that is both visceral and articulate. This is not a lifestyle sub; it is a high-output foundation designed to anchor full-range Procella systems with effortless headroom. For installations that demand true cinematic impact without sacrificing musical integrity, the P18Si stands as a serious solution.

At its core, the P18Si employs a high-power 18" woofer optimized for substantial excursion and linearity, allowing it to move significant air while maintaining composure under pressure. The sealed cabinet follows the principles of acoustic suspension, where the trapped internal air acts as a restoring force for the driver, improving damping and producing bass that is tight, tuneful, and free from port-induced overhang . This alignment favors accuracy and transient definition, qualities critical in reference cinema environments where bass must integrate seamlessly with high-efficiency screen and surround channels. Designed for use with dedicated external amplification and DSP, the P18Si can be configured in multiples to scale output and smooth room response, supporting both front-wall and distributed bass strategies. Its robust enclosure construction minimizes panel resonance and coloration, preserving clarity even at elevated sound pressure levels. The result is deep extension paired with disciplined control, allowing low-frequency effects to hit with authority while maintaining texture in musical passages.

Procella Audio builds high-performance loudspeakers, subwoofers, and power amplifiers engineered to deliver cinema-grade clarity, wide, uniform coverage, and massive dynamic output in home theaters, studios, and professional cinemas. Their products use pro-audio compression drivers, constant-directivity waveguides, and scalable system design for immersive sound with precise imaging and deep, controlled bass, delivering professional-grade surround sound systems for home theaters. Procella amplifiers complement their speakers with optimized power and DSP presets for seamless integration.