The Electro-Voice QRX118S Compact 18-Inch Subwoofer | Black is a dedicated subwoofer loudspeaker system that incorporates the EVX-180B 4-inch voice coil driver for maximum LF reproduction power with minimum box volume. This vented, 600-watt system easily provides 131 dB SPL1 @1 w/1 m (137 dB peak1) at full power in a rectangular enclosure that is stable and readily stacks for extra energy or slides easily under even the lowest stages. The QRx-118S cabinet has recessed side safety handles for ease of transport and includes 1-3/8-inch pole mount receptacle for use with full range cabinets without the need for extra mounting stands. The rear of the cabinet includes four 1/4-20 threaded T-nuts for affixing casters or dollies.


Key Features

  • Loaded with a concert-proven EVX-180B woofer for maximum power-handling
  • Available in black and by special order in white
  • EV comfort-lift handles
  • Comes with metal socket for elevating a two-way system
  • 13-ply birch plywood enclosure finished in EVCoat


Technical Specs

System Configuration


Frequency Response (-3dB)

45Hz – 150Hz

Frequency Range (-10dB)

30Hz – 250Hz

Recommended High-Pass Frequency

36Hz, 12dB/octave minimum

Recommended Crossover Frequency Range

100Hz, 24dB/octave

Axial Sensitivity, SPL

98dB (1 W @ 1 m)

Max. Calculated SPL Long Term




Long-Term Pow Handling

600 Watts

Short-Term Power Handling

2400 Watts

LF Transducer

EVX180B Cast Frame 18-inch Woofer, 4” Voice Coil


8 ohms

Enclosure Material

13-ply Birch Plywood


Powder-Coated 16-GA Steel, Fabric Backed

Input Connectors

2 x Neutrik Speakon NL4’s

Dimensions (H x W x D)

35.5” x 17.7” x 23.6” (902mm x 450mm x 599mm)

Net Weight

100 lbs. (45kg)


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