QSC KS118 Active Subwoofer
The QSC KS118 is a high-output active subwoofer well suited for mobile entertainment, AV rental, event production, clubs, and performance venues. The 18" direct radiating driver is powered by a 3600W Class-D amplifier, which delivers high sound pressure levels with dynamic and musical sound reproduction of very-low frequencies.
The onboard DSP allows the user to save and recall variable delay and crossover settings, all the while protecting the system. Additionally, two KS118s can be deployed in a cardioid arrangement, which maximizes low-frequency output from the front, while minimizing energy around the sides and rear of the setup.
The KS118 is highly portable with four, rear-mounted, low-noise casters. The birch enclosure is rugged yet stylish and features comfortable aluminum handles and a top-mounted M20 threaded pole receptacle accepts a 35mm pole for easy vertical deployment with K.2 Series and other full-range loudspeakers.
Features
- High output with remarkable low-frequency performance
- 3600W Class-D amplifier module
- 18" long-excursion direct radiating driver
- Omnidirectional or cardioid radiation modes (cardioid setup requires min 2 units)
- Selectable DEEP mode for extremely low-frequency extension
- Adjustable crossover and delay
- Scenes for commonly used applications that can be saved/recalled
- Refined, professional, and elegant appearance in any application
- Rugged painted wood enclosure for lasting durability
- Vertical or horizontal deployment (M20 threaded pole receiver for vertical setup)
- Four low-noise, heavy-duty casters
- Optional transport cover, temporary weather cover, KS-LOC security cover, and 35mm loudspeaker pole accessories available
Specifications
| Configuration | Direct Radiating |
| LF Transducer | 460 mm (18 in), Cone |
| Frequency Response (-6 dB) | 41 Hz - 98 Hz |
| Frequency Range (-10 dB) | 35 Hz - 111 Hz |
| Nominal Coverage Angle | Omni-directional or cardioid radiation modes (cardioid setup requires min. 2 units) |
| Maximum Rated SPL1 | 136 dB @ 1 m (peak) |
| Amplifier | Class D 3600W (peak) |
| Cooling | Low-noise, variable speed fan |
| Controls | Power On/Off Gain Control Rotary encoder 2 × selection buttons |
| Indicators | 2 × Power LED (front and rear) Input Signal LED Limiter active LED |
| Connectors | 2 × locking XLR/F ¼ inch combo 2 × XLR/M (Loop-thru Output) 1 × locking IEC power connector |
| AC Power Input | Universal power supply 100 – 240 VAC, 50 – 60 Hz |
| AC Power Consumption (⅛ power) | 100 VAC, 3.6 A / 120 VAC, 3.0 A / 240 VAC, 1.7 A |
| Enclosure Details | |
| Enclosure | 15 mm birch plywood |
| Color | Black (RAL 9011) |
| Grille | 16-gauge Black Powder Coated Steel |
| Speaker Dimensions (H×W×D) | 640 × 520 × 785 mm 25.2 × 20.5 × 30.9 in |
| Carton Dimensions (H×W×D) | 572 × 743 × 896 mm 22.5 × 29.3 × 35.3 in |
| Net Weight | 47 kg / 104 lb (including casters) |
| Shipping Weight | 56.5 kg / 124.6 lb |
| Regulatory | CE, WEEE, UL, China RoHS, RoHS II, FCC Class B |
| Included Accessories | 4 × Low-Noise, Heavy Duty Casters |
| Optional Accessories | KS118 CVR Transport Cover, KS-LOC Lock-Out Cover SP-26 and SP-36 Loudspeaker Poles, SP-16X Extension Pole |