Bose ShowMatch SMS118 18″ Passive Subwoofer

• 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)