$1,199.99 $1,709.99

The Sound Town ZETHUS Series ZETHUS-IP118S is a professional grade, IP-55 rated water-resistant line array passive subwoofer. Encased in a water-resistant polyvinyl board enclosure with a durable, textured black finish, it ensures reliable and durable performance in various indoor and outdoor environments. The heavy-duty water-resistant grille, equipped with open-cell fibers and water repellent woven fabric backing, provides protection against bumps and splashes.

The ZETHUS-IP118S line array subwoofer features an 18“ aluminum frame woofer with a built-in 4.5” voice coil, and a carbon fiber cone, delivering rich and solid low-frequency reinforcement. It boasts an impressive power handling capability of 900W RMS and 1800W program power (8Ω), making it ideal for medium to large spaces. The subwoofer’s heavy-duty aluminum extrusion rigging hardware allows for easy installation both indoors and outdoors as well as multiple flying points, offering versatile mounting and flying options. Complete your setup by adding ZETHUS Series PA speakers such as the ZETHUS-IP210 IP-55 rated line array loudspeaker (sold separately) for a high-quality weather-resistant line array set. Perfect for indoor and outdoor venues, such as convention centers, patios, stages, clubs, bars and more, the Sound Town ZETHUS-IP118S subwoofer is a reliable and powerful water-resistant subwoofer that you can rely on!

  • WEATHER-RESISTANT DESIGN: The IP-55 rated ZETHUS-IP118S line array subwoofer is housed in a rugged polyvinyl, water-resistant enclosure. Features a black textured finish, water-resistant cone, and heavy-duty grille with open-cell fibers, and water repellent fabric providing weather-resistant protection.
  • DEEP, POWERFUL BASS: Equipped with a 18" aluminum frame woofer, 4.5" voice coil, and a carbon fiber cone, the ZETHUS-IP118S all-weather resistant subwoofer delivers rich and solid low frequency reinforcement. It boasts 900W RMS and 1800W program (8Ω).
  • ROBUST CONSTRUCTION: Beyond its powerful sound, this subwoofer's heavy-duty metal grille and sturdy aluminum hardware ensure lasting durability. The acoustically transparent, water-repellent fabric not only preserves the sound quality but also guards against moisture intrusion.
  • HASSLE-FREE SETUP: The Sound Town ZETHUS-IP118S line array subwoofer features multiple flying points, making mounting or flying a breeze. For an unparalleled audio experience, combine it with our ZETHUS-IP210 line array PA speakers (sold separately).
  • PERFECT FOR ANY VENUE: Whether it's an indoor or outdoor venue, the ZETHUS-IP118S all-weather subwoofer promises exceptional sound quality that fits any occasion. From stages and bars to churches and schools, our subwoofer meets the demands of varied venues.


Active / Passive Passive
Frequency Range 32 Hz - 180 Hz
Frequency Response 35 Hz - 180 Hz
Sensitivity 104 dB
SPL Max 135 dB
Dispersion Omnidirectional (360° x 360°)
Configuration 18" water-resistant line array subwoofer
Transducer LF: 1 x 18" woofer
HF: --
Voice Coil 4.5"
Magnet 160 oz
Power Handling 900W RMS / 1800W Peak
Enclosure Material 3/4" water-resistant complex polyvinyl board
Mounting Hardware ZETHUS-IP210FF flying frame, compact line array hardware
Cabinet Material & Finish: Polyvinyl board with water-resistant texture coating
IP Grade IP55
Grill & Rigging Component Steel with anti-corrosion coat
Amplifier --
Input 4-pin speakon with water-resistant cover
Output 4-pin speakon with water-resistant cover
Signal Processing --
Control --
Indicator --
Voltage --

Dimension & Weight 

Product Width (in.) 33.5" Package Width (in.) 36.5"
Product Height (in.) 20.1" Package Height (in.) 23.4"
Product Depth (in.) 21.6" Package Depth (in.) 24.6"
Product Weight (lb.) 155.0 lbs Package Weight (lb.) 169.0 lbs


Manufacturer Warranty 1 Year