L-Acoustics SB15P Self-Powered Subwoofer

The SB15P is the recommended subwoofer companion for the 108P and 112P self powered enclosures, lowering the system operating range down to 40 Hz.

The SB15P contains a 15’’ direct radiating LF transducer integrated into a compact bass-reflex tuned enclosure. Featuring optimal size, frequency, and tuning ratios, the SB15P combines the advantages of a self-powered enclosure with the addition of onboard DSP control. The integrated 15’’ transducer provides exceptional power handling and cone excursion capabilities with the added benefits of low thermal compression and reduced distortion. The integrated amplification and DSP module ensures optimum driver protection while allowing the enclosure to deliver an exceptionally high SPL level. The cabinet design and tuning approach optimize the temporal behaviour of the enclosure and maintains the inherent musicality and definition characteristics at the very highest operating levels.

• Designed for seamless pairing with L-Acoustics full-range loudspeakers
• Compact enclosure optimized for mobile and fixed installations
• Internal signal processing for phase and response optimization
• High power density design for increased output-to-size ratio
• Rugged touring-grade construction for professional transport and deployment

Low Frequency Response

• Low frequency limit (-10 dB): 40 Hz

Maximum SPL

• Maximum SPL: 133 dB (peak @ 1 m, half-space, pink noise CF4)

Transducers

• 1 × 15" LF driver
• Bass-reflex enclosure design
• 4" voice coil

Amplification & DSP

• Amplifier power rating: 1000 W / 8 Ω
• DSP resolution: 24-bit / 48 kHz
• Balanced input stage, max input level: +12 dBu (0 dB setting)

Electrical & Connectivity

• 2 × XLR inputs (parallel)
• 2 × PowerCON® mains connectors
• Voltage: 120 / 230 V selectable via switch

Physical Specifications

• Dimensions (H × W × D): 440 × 520 × 520 mm (17.3 × 20.5 × 20.5 in)
• Net weight: 36 kg (79.4 lb)

Enclosure & Materials

• 18 / 24 / 30 mm Baltic birch plywood construction
• Finish: dark grey brown (Pantone® 426C) or pure white (RAL® 9010)
• Front: steel grille with acoustically transparent Airnet® cloth

Rigging & Installation

• Integrated pole mount socket
• Optional ETR15P mounting bracket support