SYVA SUB Infra Subwoofer 1x12-Inch LF

Syva Sub Infra Subwoofer – High-Performance Passive Bass Reflex Subwoofer for Professional Audio Systems

The L-Acoustics Syva Sub is a premium passive subwoofer engineered for high-fidelity low-frequency reproduction in live sound, touring, and fixed installation environments. Designed as part of the Syva series, this 12-inch infra subwoofer delivers deep, controlled bass response with exceptional efficiency, making it ideal for integrators seeking reliable performance from compact yet powerful systems. With its robust construction, optimized acoustic design, and seamless integration capabilities, the Syva Sub stands out in professional audio applications where precision and durability are paramount.

At the heart of the Syva Sub lies a high-excursion, direct-radiating 12-inch woofer mounted within a meticulously tuned bass-reflex enclosure. This configuration enhances low-end extension while maintaining clarity across the entire frequency range—particularly beneficial in setups requiring tight control over subharmonic content. The cabinet itself is crafted from premium-grade Baltic beech and birch plywood, ensuring structural rigidity and minimal resonance. A coated steel grille combined with acoustically transparent fabric protects internal components without compromising sound quality. Additionally, the enclosure features an integrated signal connector on the top panel, enabling easy daisy-chaining to companion full-range enclosures—a critical feature for streamlined system deployment in line array or distributed speaker arrays.

Key specifications highlight the Syva Sub’s versatility: it operates at a nominal impedance of 8 ohms, supports RMS power handling up to 250 watts (calculated based on average impedance across usable bandwidth), and achieves a peak SPL of 128 dB at one meter under half-space conditions using pink noise with a crest factor of 4. Its frequency response spans from 27 Hz to 120 Hz (-10 dB), offering wide coverage suitable for both music reinforcement and speech intelligibility enhancement in complex acoustic environments. The unit also includes two anti-vibration mats for secure ground stacking—an essential detail often overlooked but crucial for stability during transport and setup. Four strategically placed mounting studs allow safe vertical stacking when used with Syva Low or other compatible models, ensuring optimal system alignment and safety during live events or installations.

This subwoofer excels in scenarios demanding consistent low-frequency output without distortion, such as large-scale concerts, theater productions, corporate AV installations, and mobile DJ rigs. Whether deployed as part of a modular line array system or used independently in smaller venues, the Syva Sub provides accurate bass extension that complements midrange and high-frequency elements seamlessly. Its IP55-rated protection makes it suitable for outdoor use or environments with moderate dust and water exposure, further expanding its utility beyond traditional indoor stages.

Users consistently praise the Syva Sub for its balanced output, ease of integration, and rugged build quality. Many note how the sub blends effortlessly into existing systems without overpowering adjacent speakers—a testament to its thoughtful engineering. Reviewers frequently mention improved audience immersion due to deeper, more articulate lows, especially when paired with the Syva Low model. Professionals appreciate the inclusion of proprietary connectors, which simplify cabling and reduce potential points of failure during long tours or frequent reconfigurations.

Common questions include inquiries about compatibility with non-L-Acoustics amplifiers, the necessity of a dedicated controller, and best practices for placement in different room shapes. While the Syva Sub is designed to work optimally with the proprietary amplified controller (which includes a tailored preset for precise tuning), it can function effectively with external amplification if properly matched to the transducer’s electrical characteristics. For optimal results, placing the sub near walls or corners should be avoided unless using advanced DSP tools to manage boundary effects. Proper spacing between stacked units and careful consideration of phase alignment are recommended to maximize coherence and minimize cancellation issues.

Product Categories : Subwoofer