The Bose ShowMatch SMS118 is a high-performance, single 18-inch passive subwoofer designed to complement ShowMatch full-range DeltaQ array modules. Built for touring and permanent installations, the SMS118 delivers powerful low-frequency extension and impact in a compact, flyable enclosure. It can be used as a ground-stacked or flown subwoofer, providing flexible deployment for concerts, arenas, houses of worship, and large event venues.
- 18″ high-excursion transducer with 4″ voice coil
- Compact Baltic birch enclosure with integrated M20 threaded pole mount
- Can be flown using integrated ShowMatch rigging hardware
- Compatible with ShowMatch full-range modules for matched performance
- Weather-resistant IPx4 rating for outdoor use
- Available in portable (with handles, grille foam) or installation (fixed rigging) versions
Performance / Acoustical Data
- Frequency Response (±3 dB): 29 Hz – 160 Hz
- Frequency Range (–10 dB): 25 Hz – 200 Hz
- Recommended Low-Pass Filter: 80 Hz – 125 Hz (selectable in DSP)
- Power Handling (Long-Term / Peak): 1000 W / 4000 W
- Sensitivity (1 W, 1 m): 96 dB
- Maximum SPL (continuous): 126 dB
- Maximum SPL (peak): 132 dB
- Nominal Impedance: 8 Ω
Transducer
- LF: 1 × 18″ woofer with 4″ voice coil, high excursion
Physical / Mechanical
- Enclosure: Baltic birch plywood
- Finish: Two-part polyurethane, black
- Grille: 16-gauge perforated steel with powder-coated finish
- Environmental Rating: IPx4 (splash resistant)
- Connectors: 2 × Neutrik NL4 wired in parallel
- Rigging: Integrated ShowMatch rigging hardware for flying or ground stacking
- Pole Mount: M20 threaded pole mount for satellite speakers
- Dimensions (H × W × D): 540 × 793 × 704 mm (21.3″ × 31.2″ × 27.7″)
- Net Weight: 52.2 kg (115 lb)
- Shipping Weight: 56.7 kg (125 lb)
