PSSO KX-181A Active DSP Subwoofer 18 inch 500W RMS 11041182

Live sound engineers and mobile DJs need a subwoofer that delivers deep, controlled bass without adding complexity to their setup. The PSSO KX-181A active subwoofer combines an 18-inch driver, a 500-watt Class D amplifier, and onboard DSP to give you powerful low-end reinforcement in a rugged, road-ready cabinet. Whether you're reinforcing a band in a club, adding impact to a corporate event, or building a portable PA system, this subwoofer provides the punch and clarity your mix demands.

Key specifications

• 18-inch woofer with 4-inch voice coil for high output and low distortion
• Class D amplifier: 500 W RMS, 1000 W program, 128 dB peak SPL
• Frequency response: 35 Hz – 150 Hz, bass reflex enclosure
• Built-in DSP with crossover, parametric EQ, delay, phase reversal, and presets
• Balanced XLR inputs and parallel/filtered XLR outputs for flexible signal routing
• PowerCON input and link output for reliable power daisy-chaining
• Birch plywood cabinet with M20 threaded pole mount flange
• LCD display and rotary encoder for intuitive control
• Comprehensive protection circuits: overload, short circuit, limiter, thermal

Why choose it

The KX-181A is built for professionals who need consistent performance night after night. The high-excursion 18-inch driver and efficient Class D amplifier deliver chest-thumping bass with headroom to spare, while the DSP lets you tailor the response to any room or system configuration. The birch plywood enclosure is both lightweight and durable, and the integrated pole mount makes it easy to stack a top speaker for a full-range system. With PowerCON linking and multiple XLR outputs, you can expand your setup without extra power distribution or signal splitters.

Ideal use cases

• Live sound reinforcement for bands, DJs, and small to medium venues
• Portable PA systems for mobile entertainers and event production
• Fixed installations in bars, clubs, houses of worship, and theaters
• Adding low-frequency extension to existing full-range speaker systems

Good to know

The KX-181A operates on 230 V AC at 50 Hz, making it suitable for European power standards. The DSP presets allow quick setup for common configurations, and the filtered XLR outputs can send a high-passed signal to your tops, ensuring a seamless crossover between subs and mains. The rugged cabinet and protective grille are designed to withstand the rigors of transport and frequent use.