ZETHUS-118SWPW | ZETHUS Series 18” 1600W Powered Line Array Subwoofer with DSP, White

The ZETHUS-118SWPW is a powered 18" line array subwoofer delivering deep, controlled low-frequency reinforcement. It features a high-performance aluminum frame 18" woofer, a 4" voice coil, a 145 oz magnet, and a built-in Class-D 1600W amplifier that delivers high-output bass reproduction. Onboard digital signal processing includes four EQ presets, dynamic bass enhancement, RMS dynamic processing, a 2nd-order IIR filter, phase control, and a switchable low-pass filter adjustable from 40 Hz to 180 Hz for precise low-frequency tuning.

The ZETHUS-118SWPW is housed in a rugged all-birch plywood enclosure designed to minimize resonance and unwanted vibration. Reinforced with a heavy-duty perforated metal grill, it is well suited for touring, portable, and permanent installation applications. The white textured finish provides a clean, professional appearance for visually sensitive environments.

The ZETHUS-118SWPW integrates seamlessly with ZETHUS-210WPW full-range powered line array loudspeakers for both flown and ground-stacked configurations. Flown systems use the ZETHUS-210FF flying frame (sold separately). For ground-stacked setups, the subwoofer serves as a stable base for stacked ZETHUS-210WPW cabinets, with the optional ZSCB-118S caster board (sold separately) providing secure positioning and easier transport during setup and teardown.

• POWERED 18" LINE ARRAY SUBWOOFER PERFORMANCE: Professional powered subwoofer delivering deep, controlled low-frequency reinforcement. Features a high-performance 18" woofer with an aluminum frame, 4" voice coil, and a 145 oz magnet for strong, accurate bass response.
• INTEGRATED CLASS-D AMPLIFICATION & DIGITAL SIGNAL PROCESSING: Built-in Class-D amplifier delivers 800W continuous / 1600W peak power. Onboard DSP features include four EQ presets, dynamic bass enhancement, RMS dynamic processing, a 2nd-order IIR filter, phase switch, and a switchable low-pass filter adjustable from 40 Hz to 180 Hz.
• TOUR-READY BIRCH PLYWOOD ENCLOSURE: All-birch plywood cabinet minimizes resonance and vibration, reinforced with aluminum extrusion rigging hardware and a heavy-duty perforated metal grill for touring and installation use. Finished in a white textured coating, it is well suited for environments such as houses of worship, clubs, schools, and modern installation spaces.
• FLEXIBLE SYSTEM DEPLOYMENT: Supports both flown and ground-stacked configurations. Flown systems use the ZETHUS-210FF flying frame (sold separately). For ground-stacked setups, the ZETHUS-118SWPW serves as the base for ZETHUS-210WPW full-range line array loudspeakers, with optional ZSCB-118S caster board (both sold separately) for secure positioning and simplified transport.

Specifications

Dimension & Weight

Warranty/Certifications

▶ ZETHUS Series Brochure