QSC KW181: 18&
QSC KW181: 18&
QSC KW181: 18&

QSC KW181: 18'' Active Subwoofer 1000 watts (ea)

Regular price $1,998.99
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QSC has created a spectrum of active loudspeakers designed with one common goal - accurate acoustical performance for the widest selection of applications. All K Family models feature common power modules, DSP and performance characteristics - irrespective of their size or configuration. Models are differentiated primarily by coverage angle, bass extension, woofer diameter and enclosure size. With the K Family there is no "good, better, best" only "best, best, best".


• 18" subwoofer
• Maximum SPL 135 dB peak
• 1000 watt Class D continuous power
• Tour-grade 16 gauge steel grilles
• Rugged, texture-painted birch enclosures
• Threaded pole socket
• Speaker mounting pole included (35 mm diameter, 36 inches (91 cm) long, M20 thread.)
• Comfortable ergonomic handles


Configuration: 18" subwoofer
Transducer: 18" cone transducer
Frequency Response (-6 dB): 40 Hz to 112 Hz
Frequency Range (-10 dB): 37 Hz to 129 Hz
Maximum SPL: 135 dB peak

Power Output: 1000 W Class D continuous; 2000 W peak
Input Impedance: XLR / 1/4": 38 kΩ balanced / 19 kΩ unbalanced

Controls: Power, Gain, LF Mode (Normal/DEEP), Polarity (Normal/Reverse), Front LED (On/Off/Limit)
Indicators: Power, Signal, Standby, Limit

Dual balanced female XLR/1/4" line level input
Dual Balanced male XLR full range line level out
Remote gain control
Locking IEC power connector

Cooling: On demand, 50 mm variable speed fan

Amplifier Protection: Thermal limiting, output overcurrent, overtemperature muting, GuardRail

Transducer Protection: Thermal limiting, excursion limiting

AC Power Input: 100240 VAC, 50/60Hz Universal power supply
AC Power Consumption (1/8 Power):
100 VAC, 2.3 A
120 VAC, 2.01 A
230 VAC, 1.13 A

Material: 15 mm painted birch plywood
Finish: Black textured paint
Grille: Rugged Powder-Coated Steel Grille
Dimensions (HxWxD) inches: 20.1 x 23.4 x 29.9 with casters
Dimensions (HxWxD) mm: 510 595 761 with casters
Net Weight: 83 lb / 37.6 kg