The STS118E is a passive, installation-grade 18-inch subwoofer that matches the scale and voicing of high-output Bose Professional loudspeaker systems. With extension down to 29 Hz, the STS118E provides the low-frequency impact required for music-forward and high-energy applications while remaining practical for permanent installations in both indoor and outdoor environments. The STS118E is optimized for ground-stacked placement and includes integrated suspension points, allowing system designers to adapt deployment based on room layout, sightlines, and architectural requirements. A universal pole cup supports both standard 35 mm poles and M20-threaded poles for temporary applications.
The IP55-rated construction enables deployment in exposed and semi-exposed locations across a wide range of venues. Finished in black, the ShowTime STS118E integrates cleanly into a variety of architectural environments while delivering long-term durability. When paired with compatible Bose Professional full-range loudspeakers, processors, and amplifiers, the subwoofer provides a reliable low-frequency foundation that supports high-output sound systems with consistency, durability, and predictable performance.
| Frequency Range (-10 dB) | 29 Hz - 263 Hz |
|---|---|
| Calculated Maximum SPL @ 1 m | 125 dB (free-field), 131 dB (half-space) |
| Sensitivity | 96 dB (SPL/1W at 1 m) |
| Power Handling, Peak | 3200W |
| Nominal Impedance | 8Ω |
| Low-Frequency | 1 x 18.0-in (457 mm) high-excursion woofer |
| Crossover | 80 Hz - 200 Hz, requires active crossover in DSP |
| Horizontal Coverage | Omnidirectional below 200 Hz |
| Vertical Coverage | Omnidirectional below 200 Hz |
| Suspension/Mounting |
(4) stainless-steel M10 attachment points (top panel) |
| Enclosure Material | Exterior-grade birch plywood |
| Grille | Powder-coated perforated stainless steel, paintable |
| Color | Black |
| Environmental | Rated for direct-exposure outdoor installations (IEC 60529: IP55) |
| Ingress Protection | IP55 |
| Dimensions (H x W x D) | 22.2" (563 mm) x 22.4" (570 mm) x 29.1" (738 mm) |
| Weight | 85.1 lbs (38.6 kg) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
