Loyola Enterprises

A veteran and minority owned SDB Certified Business.



757.498.6118 Ext - 109QRx-218S - Call for pricing - Dual 18-inch 1200 watt subwoofer


PDFQRx-218S Specifications (pdf)

The QRx-218S is a dedicated subwoofer system that features the excellent low-frequency capabilities of two powerful EVX-180B 18" drivers with 4" voice coils. In the QRx-218S, these drivers are front-mounted in a compact enclosure that is tuned to 36 Hz and delivers solid bass fundamentals. The 1200-watt continuous, 4800-watt peak power capacity of the QRx-218S easily provides 133 dB SPL contiuous, 139 dB peak output capability at 1 meter. The QRx-218S enclosure is built of 13-ply, void-free, grain-oriented Birch plywood finished in Futura™, a sprayed-on polyurethane finish that is very rugged and weather resistant. The drivers are protected from damage by a 16-gauge powder-coated steel grille with fabric backing. Available in black or white.

The QRx-218S enclosure has EV’s recessed comfort-lift handles on the top and the bottom of the enclosure so the box can be lifted easily. Standard versions of the QRx218S are equipped with rear-mounted pocket wheels and handles to allow one person to comfortably move the enclosure. The standard versions also have a 1-3/8" metal stand socket and are shipped with a 34" steel pole for elevating satellite speakers. The QRx218S is available with L-track rigging as a special order option. The rigging versions have L-track on the top and bottom plus a single-stud pull-up point on the back. The rigging versions do not come with wheels or a stand mount.


  • Dual 18" Subwoofer Speaker System
  • Compact, high-output dual 18" sub with concert-proven EVX-180B woofers
  • Available in black and by special order in white or with L-track rigging
  • Rear-mounted tilt-back pocket wheels allow one person to move the system (not available on rigging version)
  • EV comfort-lift handles
  • Comes with metal socket and 34" pole for elevating two-way system (not available on rigging version)
  • 13-ply birch plywood enclosure finished in Futura™
  • Parallel Neutrik® NL4 input connections

Frequency Response (-3dB) 35 Hz–125 Hz Power Handling 1200 W cont. / 2400 W prog. / 4800 W peak
Frequency Range (-10dB) 31 Hz–250 Hz Crossover Frequency 80-120 Hz (24dB/oct.)
Sensitivity 1 W/1 m 102 dB Rec. High-Pass Freq. 35 Hz (12dB/oct.)
Max SPL/ 1m (calc) 139 dB Nominal Impedance 4 Ω
Coverage (HxV) Omnidirectional Transducers (LF) (2) EVX180B
Connectors (2) Neutrik Speakon NL4’s Enclosure Material 13-ply Birch plywood
Grille Powder coated steel, fabric backed
Dimensions (HxWxD) 101.5 x 56.0 x 60.3 cm
(40.0" x 22.1" x 23.8")
Weight 68 kg (150 lbs)
For pricing options and packages, contact us at
757.498.6118 Ext - 109, Or