Loyola Enterprises

A veteran and minority owned SDB Certified Business.



757.498.6118 Ext - 109QRx-118S - Call for pricing - 18-inch 600 watt subwoofer


PDFQRx-118S Specifications (pdf)

The QRx-118S is a dedicated subwoofer loudspeaker system that incorporates the EVX-180B 4" voice coil driver for maximum LF reproduction power with minimum box volume. This vented, 600-watt system easily provides 131 dB SPL @1 w/1 m (137 dB peak) 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" 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. Enclosure is built from 13-ply, void-free, grain-oriented birch plywood finished with Futura™, a sprayed-on polyurethane finish that is very rugged. Available in black or white finishes.


  • 18" Subwoofer Speaker System
  • 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 Futura™
  • Parallel Neutrik® NL4 input connections

Frequency Response (-3dB) 45 Hz–150 Hz Power Handling 600 W cont. / 1200 W prog. / 2400 W peak
Frequency Range (-10dB) 30 Hz–250 Hz Crossover Frequency 100 Hz (24dB/oct.)
Sensitivity 1 W/1 m 98 dB Rec. High-Pass Freq. 36 Hz (12dB/oct.)
Max SPL/ 1m (calc); half space 137 dB Nominal Impedance 8 Ω
Coverage (HxV) Omnidirectional Transducer (LF) EVX180B
Connectors (2) Neutrik Speakon NL4’s Enclosure Material 13-ply Birch plywood
Grille Powder coated 16-GA steel, fabric backed
Dimensions (HxWxD) 90.2 x 45.0 x 59.9 cm
(35.5" x 17.7" x 23.6")
Weight 45 kg (100 lbs)
For pricing options and packages, contact us at
757.498.6118 Ext - 109, Or