$2,199.99 $3,134.99

The Sound Town ZETHUS Series ZETHUS-218SPW premium line array subwoofer boasts dual 18” woofers and 4” voice coils, energized by a 2-channel class-D amplifier, delivering a remarkable 1600W continuous and 3200W peak power. Designed for seamless integration, it features (2) XLR-1/4" combo inputs and balanced XLR outputs, making connectivity effortless with the ZETHUS Series full-range and other full-range speakers. With the integrated digital signal processor (DSP) and a toggle between full-range and high-pass output modes, the ZETHUS Series subwoofer ensures a versatile audio experience.

Encased in a robust birch plywood enclosure, the ZETHUS-218SPW subwoofer guarantees minimal distortion and vibrations even at high volume outputs - a testament to top-tier craftsmanship. The ZETHUS-218SPW is thoughtfully designed with multiple side handles for easy transportation. For those always on the go, the ZSCB-218S caster board (sold separately) simplifies ground stacking and mobility, making it a top choice for mobile setups. Enhance your sound system further by integrating the ZETHUS-210BPW full-range powered line array speakers (sold separately) using the ZETHUS-SF1 mounting frame (also sold separately) for ground stacking. Experience unmatched bass precision with the ZETHUS-218SPW subwoofer, tailored for venues ranging from stages, auditoriums, clubs, and bars to restaurants and places of worship.

  • ZETHUS SERIES POWERED SUBWOOFER: The ZETHUS-218SPW subwoofer features dual 18" woofers with 4" voice coils, powered by a 2-channel class-D amplifier capable of 1600W continuous, 3200W peak power.
  • XLR & 1/4” INPUT - XLR OUTPUT: Seamlessly integrate the ZETHUS Series subwoofer with its (2) XLR-1/4“ combo input and balanced XLR outputs. With the built-in digital signal processor (DSP) presets and a toggle between full-range and high-pass output modes, it ensures easy connectivity with full-range ZETHUS speakers.
  • TOUR-LEVEL CRAFTSMANSHIP: Built with high-quality birch plywood enclosure designed to resist distortion and unwanted vibrations, even at high output levels, for a clear and accurate output.
  • PORTABLE PERFORMANCE: Designed with multiple side handles simplifying transport. The ZSCB-218S caster board (sold separately) allows for ground stacking and hassle-free transportation, making it an ideal choice for mobile setups. Perfect for stages, auditoriums, clubs, bars, restaurants, place of worship, and more.
  • SEAMLESS INTEGRATION: Easily add and integrate ZETHUS-210BPW full-range powered line array speakers (sold separately) to the ZETHUS-218SPW subwoofer for a complete line array system with an impressive sound performance using the ZETHUS-SF1 mounting frame (sold separately) for ground stacking.


Active / Passive Active
Frequency Range 27 Hz - 180 Hz
Frequency Response 32 Hz - 180 Hz
Sensitivity 104 dB
SPL Max 135 dB
Dispersion Omnidirectional
Configuration Dual 18" active line array subwoofer
Transducer LF: 2 x 18" woofer, HF: --
Impedance 2 x 8Ω Nominal (bi-amp)
Power Handling 1600W RMS / 3200W Peak
Enclosure Material High-grade 100% birch plywood
Mounting Hardware Integrated line array hardware
Finish Texture coating
Grill & Rigging Component Steel with anti-corrosion coat
Amplifier Class-D amplifier (2-channel bi-amped)
Input 2 x 1/4" & XLR combo
Control Volume, polarity, LPF
Indicator --
Voltage Neutrik PowerCON in & out 100V-240V (50-60 Hz)
Caster Board Model# ZSCB-218S

Dimension & Weight

Product Width (in.) 45.3"
Package Width (in.) 50.8"
Product Height (in.) 21.7" Package Height (in.) 28.0"
Product Depth (in.) 30.6" Package Depth (in.) 36.2"
Product Weight (lb.) 272.0 lbs Package Weight (lb.) 284.2 lbs


Manufacturer Warranty 1 Year