The Electro-Voice QRx-218S 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
QRx-218S, 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 QRx-218S easily provides
133 dB SPL continuous, 139 dB peak output capability at 1 meter. 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.
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 QRx-218S, 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 QRx-218S 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 QRx-218S enclosure is built
of 13-ply, void-free, grain-oriented birch plywood that is coated with
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. 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 P1201 Modular Precision Series
or the P3000 Precision Series units, the QRx-218S can augment the performance
of even the finest sound systems with high levels of extended bass response.
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