QSC KW181 1000W 18" Powered Subwoofer - Demo

Get premium low-end performance at exceptional value with this demo unit of the QSC KW181 — a high-powered 18" active subwoofer designed for deep, tight bass in live sound, DJ, and professional audio applications. This unit was gently used for demonstration purposes and remains in excellent working condition.

Built with a rugged birch enclosure and powered by a 1000-watt Class D amplifier, the KW181 delivers powerful, clean low frequencies down to 35 Hz. With onboard DSP and a built-in crossover, it integrates seamlessly with top cabinets like the QSC K or KW series. This subwoofer is ideal for venues, mobile DJs, houses of worship, or any system requiring chest-thumping low-end reinforcement.

Key Features:

• 18" High-output woofer with deep bass response

• 1000W Continuous Class D Amplifier for powerful, efficient output

• Frequency Range: 35 Hz – 129 Hz (-10 dB)

• Onboard DSP for optimized system protection and sound quality

• Selectable 100 Hz low-pass filter and polarity switch

• Combo XLR/TRS inputs and loop-thru XLR outputs for easy connectivity

• Rugged 15mm birch plywood cabinet with durable textured paint finish

• Four casters included for easy transport

• M20 threaded pole socket for mounting top cabinets

• Integrated handles for comfortable portability

• Weight: Approx. 88 lbs (39.9 kg)