Description:
Product Description
The QSC KS118 is a high-performance direct-radiating powered subwoofer that provides deep, powerful bass for mobile entertainment, AV production, clubs, and venues. Featuring an 18" long-excursion cone driver, a 3600W peak Class D amplifier, a frequency response of 41-98Hz at -6dB, a maximum SPL of 136dB, omnidirectional or cardioid radiation (minimum of 2 units), selectable DEEP™ mode for extremely low frequency extension, adjustable crossover and delay, preset scenes for common applications, a 15mm birch plywood enclosure, 4 heavy-duty low-noise casters, and an M20 threaded pole receptacle for vertical deployment, the KS118 is ideal for mobile entertainment, AV production, clubs, venues, large-scale live events, and professional sound reinforcement systems.
18" Long-Excursion Driver
High-Performance Direct Radiation
The 18" long-excursion cone driver delivers deep, powerful bass. The direct-radiating design allows for a flatter frequency response than bandpass designs.
Low-Frequency Extension
The 18" driver provides exceptional low-frequency extension. This extension is ideal for entertainment and AV production.
3600W Peak Power
Efficient Class D Amplifier
The 3600W peak Class D amplifier provides exceptional power with low energy consumption. The 3600W power rating is the highest in the KS series.
Advanced Thermal Management
The variable-speed, low-noise fan provides efficient cooling. Advanced cooling ensures reliable operation.
136dB Maximum SPL
Exceptional Sound Pressure
The maximum SPL of 136dB measured on-axis at 1m provides exceptional sound pressure. The 136dB SPL is the highest in the KS series.
Extended Frequency Response
41Hz - 98Hz at -6dB
The 41-98Hz frequency response at -6dB provides deep, controlled bass. The response is ideal for entertainment.
Extension to 35-111Hz at -10dB
The extension to 35-111Hz at -10dB provides exceptional low-frequency extension. This extension is important for full-range reproduction.
Selectable DEEP™ Mode
Extremely Low Extension
The selectable DEEP™ mode provides extremely low frequency extension. The DEEP mode is ideal for applications requiring deep bass.
Omnidirectional or Cardioid Radiation
Omnidirectional
Omnidirectional radiation provides 360° coverage. Omnidirectional radiation is ideal for mobile entertainment.
Cardioid (Minimum 2 Units)
Cardioid radiation requires a minimum of 2 units. Cardioid radiation provides rear rejection for better control.
Advanced Flexible Controls
Adjustable Crossover
The adjustable crossover allows for optimization with different loudspeakers. The crossover is essential for system integration.
Adjustable Delay
The adjustable delay allows for synchronization with main speakers. The delay is important for phase alignment.
Preset Scenes
Preset scenes for common applications can be saved and recalled. Scenes facilitate quick operation.
Professional Portable Construction
Birch Plywood Enclosure
The 15mm birch plywood enclosure provides rigidity and durability. The birch plywood is sturdy and lightweight.
4 Heavy-Duty Rubber Casters
The 4 heavy-duty, low-noise rubber casters facilitate transport. The casters are ideal for portable applications.
Comfortable Handles
Comfortable handles facilitate manual handling. The handles are important for transport.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | QSC KS118 |
| Type | Direct-radiating powered subwoofer |
| Configuration | Direct radiating |
| LF Driver | 460mm (18") long-excursion cone |
| Frequency response -6dB | 41 - 98Hz |
| Frequency range -10dB | 35 - 111Hz |
| Radiation | Omnidirectional or cardioid (minimum 2 units) |
| Maximum SPL | 136dB peak @ 1m (10dB crest factor pink noise) |
| Amplifier | Class D, 3600W peak |
| Cooling | Variable-speed, low-noise fan |
| Controls | Power switch, rotary gain control, 2x selection buttons, adjustable crossover, adjustable delay, selectable DEEP mode |
| Indicators | 2x Power LEDs (front and rear), input signal LED, active limiter LED |
| Inputs | 2x XLR/combo (line), 2x XLR loop-thru output, 1x IEC power connector |
| AC Power | Universal 100-240VAC, 50-60Hz |
| AC Consumption | 100VAC 3.6A / 120VAC 3.0A / 240VAC 1.7A (1/8 power) |
| Enclosure materials | 15mm birch plywood |
| Color | Black (RAL 9011) |
| Grille | 16-gauge black powder-coated steel |
| Casters | 4x heavy-duty low-noise rubber casters |
| Pole socket | M20 (vertical deployment) |
| Dimensions (H x W x D) | 640 x 520 x 785 mm (25.2 x 20.5 x 30.9") |
| Net weight | 47 kg (104 lbs) including casters |
| Shipping weight | 56.5 kg (124.6 lbs) |
| Included accessories | 4x heavy-duty low-noise rubber casters |
| Optional accessories | KS118 CVR (transport cover), KS-LOC (lock-out cover), SP-26, SP-36 (speaker poles), SP-16X (extension pole) |
| Regulatory compliance | CE, WEEE, UL, China RoHS, RoHS II, FCC Class B |
Ideal for
Professional sound engineers in large-scale live events, portable PA systems for concerts and festivals, high-performance mobile entertainment and DJs, professional AV production, high-volume clubs and venues, professional sound reinforcement installations, bands and musicians requiring high-performance subwoofers, corporate events and large-scale presentations, churches and houses of worship with high-performance sound systems, schools and auditoriums, users requiring a maximum-power portable subwoofer, and any application requiring high-performance professional low-frequency reproduction.