Electro-Voice QRX218SRIG Compact Dual 18-Inch Subwoofer with Rig | Black


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The Electro-Voice QRX218SRIG Compact Dual 18-Inch Subwoofer with Rig | Black is a dedicated subwoofer system that features the excellent low-frequency capabilities of two powerful EVX- 180B 18-inch drivers with 4-inch voice coils. In the QRX218SRIG, these drivers are front-mounted in a compact enclosure that is tuned to 36 Hz and delivers solid bass fundamentals. The 1,200-watt continuous, 4,800-watt peak power capacity of the QRX218SRIG easily provides 133 dB SPL continuous, 139 dB peak output capability at 1 meter. The QRX218SRIG enclosure has EV’s recessed comfort-lift handles on the top and the bottom of the enclosure so the box can be lifted easily. On the back of the standard versions of the enclosure are two sealed pocket wheels at the bottom and two handles at the top of the system so it can be tilted back and moved comfortably by one person. On the rigging versions of the QRX218SRIG, there are two L-tracks on the top and bottom of the enclosure to allow the system to be hung horizontally or vertically. The standard versions of the QRX218SRIG are also equipped with a metal 1-3/8-inch mounting socket and are shipped with a 34-inch pole to allow elevation of full-range speakers above the sub. The QRX218SRIG enclosure is built of 13-ply, void-free, grain-oriented birch plywood that is coated with EVCoat, 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. The enclosure is available in black or white finishes, with or without the rigging hardware. When paired with a powerful, high-quality amplifier such as EV’s P3000 Precision Series units, the QRX218SRIG can augment the performance of even the finest sound systems with high levels of extended bass response.


Key Features

  • Compact, high-output dual 18-inch sub with concert-proven EVX-180B woofers
  • Available in black and by special order in white or with L-track rigging
  • EV comfort-lift handles
  • 13-ply birch plywood enclosure finished in EVCoat



Technical Specs

System Configuration

Subwoofer (requires active electronic filtering)

Frequency Response (-10dB)

31Hz – 250 Hz

Recommended High-Pass Frequency

35Hz, 12dB/octave minimum

Axial Sensitivity, SPL

102 dB (1W @ 1m)

Max. Calculated SPL

139 dB (1W @ 1m)

Long-Term Power Handling

1,200 Watts

Short-Term Power Handling

4,800 Watts


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

Recommended Crossover Frequency Range

80 – 120Hz, 24 dB/octave

Nominal Impedance

4 ohms

Enclosure Material

13-Ply Birch Plywood


Powder-Coated Steel, Fabric Backed

Recommended Controller

EV Dx38 or AC-One

Input Connectors

2 x Neutrik Speakon NL4’s

Dimensions (H x W x D)

39.98” x 22.05” x 23.77” (1015mm x 560mm x 603mm)

Net Weight (each)

150 lbs. (68kg)


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