Commanding Low End
The QSC KS118 is a very high-output active subwoofer delivering impressive low-frequency performance for mobile entertainers, AV production and venues. Featuring an 18-inch direct-radiating driver powered by a 3600 watt Class D amplifier, it produces high sound pressure levels with dynamic, musical reproduction. Onboard DSP optimizes performance, offers selectable DEEP™ mode for ultra-low sub-bass response, and enables advanced cardioid array capabilities.
Key Features
Core Performance
3600-watt peak power
18-inch long-excursion driver
Covers low-end frequencies down to 35 Hz (-10 dB)
136 dB @ 1 m (peak SPL)
Advanced Control & DSP
Onboard Digital Signal Processing (DSP): Optimizes, tunes, and protects the system under heavy use
Selectable DEEP™ Mode: Provides deep sub-bass extension to capture subterranean frequencies without risking distortion or over-excursion.
Professional Directivity & Array Control
Vertical and Horizontal Deployment options.
Cardioid Array Capabilities: Easily set up highly directional cardioid sub configurations when deploying two or more units, significantly dropping low-frequency stage volume.
Omnidirectional or Directional Steering: Control your bass dispersion based on venue acoustics and specific audience coverage needs.
Tour-Ready Durability & Portability
Rugged Wood Enclosure: Premium wood cabinet construction with a heavy-duty painted finish
Effortless Mobility: Equipped with four heavy-duty, smooth-rolling casters on the rear panel
Directivity Control Options
Technical Specifications
-
Model: KS118
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, 3600 W (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 (1/8th Power): 100 VAC, 3.6 A / 120 VAC, 3.0 A / 240 VAC, 1.7 A
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): 360 × 360 × 496 mm / 14.2 × 14.2 × 19.5 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
¹ Peak SPL: Peak SPL is measured on-axis, at 1 meter, using pink noise, crest factor 10 dB unweighted.
-
