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The PowerWorks ZETHUS-218SPW is a dual 18-inch powered subwoofer that packs a powerful punch with its 3200W peak power capacity and dedicated DSP. Designed for line array systems, this subwoofer is housed in a robust birch plywood enclosure, ensuring clear and deep bass reproduction for professional audio applications.
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The PowerWorks ZETHUS-218SPW is a powerhouse in the low-frequency domain, providing sound reinforcement professionals with a formidable subwoofer that complements any line array system. With dual 18″ woofers driven by a 4″ voice coil and powered by a 2-channel class-D amplifier, this subwoofer can deliver continuous sound pressure levels with 1600W power and reach a peak of 3200W for those moments that require an extra impact.

Designed with the rigors of touring in mind, the ZETHUS-218SPW features a high-quality birch plywood enclosure that not only contributes to its excellent acoustic properties but also ensures durability and resilience against on-the-road wear and tear. The texture-coated finish adds to its aesthetic appeal while providing an extra layer of protection.

For audio engineers who require precise control over their sound, the built-in digital signal processor offers presets, dynamic bass enhancement, and a switchable high-pass filter. Connectivity is made simple and efficient with dual combo XLR-1/4″ inputs and XLR outputs, accommodating a wide array of live sound setups.

Transport and setup are made more manageable thanks to the multiple side handles and the optional ZSCB-218S caster board. Whether it’s installed in a fixed venue or used on tour, the ZETHUS-218SPW is ready to meet the demands of any event with its seamless integration and potent bass delivery.


  • Model: PowerWorks ZETHUS-218SPW
  • Type: Powered Line Array Subwoofer
  • Powered: Yes
  • LF Driver Size: 2 x 18″ Woofers
  • Total Power: 1600W Continuous / 3200W Peak
  • Impedance: 2 x 8Ω Nominal (bi-amp)
  • Inputs: 2 x 1/4″ & XLR combo, 1/8″ AUX, Bluetooth
  • Outputs: 2 x XLR (Full Range/High Pass)
  • Frequency Range: 27 Hz – 180 Hz
  • Sensitivity: 32 Hz – 180 Hz
  • SPL: 135 dB
  • Coverage Angle: Omnidirectional
  • Enclosure Material: High-grade 100% birch plywood
  • Enclosure Finish: Texture coating (RAL colors available)
  • Mounting: Compact line array aluminum hardware
  • Signal Processing: Presetting EQ (LPF), Polarity Switch
  • Product Dimensions: 45.3″ W x 21.7″ D x 30.6″ H
  • Product Weight: 272.0 lbs

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