Bose Professional ShowMatch SMS118 Subwoofer (Each)

The Bose Professional ShowMatch SMS118 is a high-output subwoofer designed to integrate seamlessly with ShowMatch DeltaQ array loudspeakers. It extends low-frequency performance down to 29 Hz and is optimized for use in large-scale professional sound reinforcement systems.

This subwoofer features an integrated rigging system that allows direct integration into ShowMatch flown arrays using optional array frames and accessories. The portable-rated Baltic birch enclosure also supports ground-stack applications, providing flexibility for touring and permanent installations.

The SMS118 includes a front-grille mounted NL4 input to support advanced cardioid array configurations and high-output performance. It is engineered for demanding venues requiring powerful, controlled low-frequency reinforcement with scalable deployment options.

Key Features

• DeltaQ Compatible Design: Optimized for integration with ShowMatch DeltaQ array systems
• 18-inch High-Excursion Subwoofer: Extends low-frequency response down to 29 Hz
• Integrated Rigging System: Supports flown arrays with optional ShowMatch rigging hardware
• Ground-Stack Capable: Suitable for stacked or flown system configurations
• Cardioid Array Support: Front-grille mounted NL4 input for advanced subwoofer array setups

Technical Specifications

Product Type
Professional array subwoofer

Frequency Range (-10 dB)
29 Hz – 300 Hz

Calculated Maximum SPL @ 1 m
121 dB (free field/array)
127 dB (free field/array) peak
133 dB (half-space/ground stack) peak

Nominal Impedance
4 Ω

Power Handling, Long-Term Continuous
750 W

Power Handling, Peak
3000 W

Sensitivity (SPL / 1 W @ 1 m)
92 dB (free field/array)
98 dB (half-space/ground stack)

Crossover
60 Hz – 100 Hz (requires active crossover in DSP)

Low-Frequency Transducer
1 × Bose Professional LF18 neodymium high-excursion 18 in woofer
4.5 in (114 mm) voice coil

Enclosure Material
Baltic birch plywood

Grille
16-gauge perforated steel, powder-coated finish

Suspension / Mounting
4-point quick-pin rigging
4 × M10 top and 4 × M10 bottom inserts
M20 pole cup

Color
Black

Product Dimensions (H × W × D)
540 × 765 × 775 mm
21.2" × 30.1" × 30.5"

Net Weight
136.5 lbs (61.9 kg)

What's in the Box

(1) ShowMatch SMS118 Subwoofer
(1) Installation Guide