L-Acoustics | SB15M - High power compact subwoofer: 1 x 15''

L-Acoustics | SB15M - High power compact subwoofer: 1 x 15''

The L-Acoustics SB15M is a compact, high-power subwoofer featuring a single 15 inch driver in a bass-reflex enclosure. It delivers up to 137 dB SPL with extension down to 40 Hz. The SB15M is the recommended subwoofer for the L-Acoustics Kiva II and XT series.

Deep, tight bass in a compact footprint

Looking for a compact subwoofer that still delivers serious low-end impact? The L-Acoustics SB15M pairs a direct-radiating 15 inch driver with a bass-reflex enclosure featuring L-Vents. These laminar-flow ports increase low-frequency efficiency and reduce port noise. The result is precise, musical bass with plenty of punch, even at high sound pressure levels.

Maximum power, minimal size

With a maximum SPL of 137 dB (peak at 1 m) and usable low-frequency response down to 40 Hz (-10 dB), the SB15M adds substantial low-end power to small and medium-sized sound systems. The enclosure weighs just 36 kg and features two handles, making it easy to transport and set up. That makes it a strong fit for rental and touring applications.

Flexible deployment: standard or cardioid

The SB15M can be ground-stacked or flown, either as a standalone subwoofer array or combined with other L-Acoustics loudspeakers. By combining two or more units with the matching presets, you can create omnidirectional or cardioid patterns. This reduces low-frequency energy on stage and in the space behind the array. The integrated 35 mm pole-mount socket makes it easy to place a satellite speaker on top.

Built for professional use

The enclosure is made from premium-grade Baltic birch plywood and protected by a coated steel grille. With IP55 protection and anti-corrosion treated rigging components, the SB15M is designed for intensive use in both rental and fixed installations.

What is the SB15M suited for?

• Live events and band performances
• Rental and touring systems
• Theaters, conference centers and venues
• Hospitality, clubs and retail chains
• Fixed installations where space is limited

Pair it with

The SB15M is the natural low-frequency complement to the L-Acoustics Kiva II and the XT series (such as the 5XT and 8XT). For amplification and processing, use an L-Acoustics amplified controller: LA2Xi, LA4X, LA8 or LA12X.

Want to know more?

Need advice on a complete setup with the SB15M, for example combined with Kiva II or XT loudspeakers? Contact us and we'll be happy to help.

Acoustical

• Low Frequency Limit (-10 dB): 40 Hz
• Maximum SPL: 137 dB with LA2Xi (bridge mode) / LA4X / LA8 / LA12X; 131 dB with LA2Xi
• Nominal Directivity (-6 dB): Standard or cardioid
• Transducers: 1 × 15" cone driver
• Acoustical Load: Bass-reflex, L-Vents
• Nominal Impedance: 8 Ω

Physical

• Connectors: 2 × 4-point speakON
• Rigging and Handling: 2 × handles; 2 × coupling bars and 2 × locking tabs; 1 × 35 mm pole socket
• Dimensions (H × W × D): 580 × 429 × 520 mm
• Weight (Net): 36 kg
• Cabinet: Premium-grade Baltic birch plywood
• Front: Coated steel grille, acoustically neutral 3D fabric
• Rigging Components: High-grade steel with anti-corrosion coating
• Finish: Dark grey brown Pantone 426 C; pure white RAL 9010; custom RAL code on special order
• IP Rating: IP55