Electro Voice Speaker System QRx 118S User Manual

QRx118S  
18” Subwoofer  
Loudspeaker System  
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  
Futuratm  
General Description:  
Technical Specifications:  
System Configuration: Subwoofer  
Freq. Response (-3 dB): 45 Hz - 150 Hz  
Freq. Response (-10 dB): 30 Hz - 250 Hz  
The QRx-118S 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.  
Recommended High- 36 Hz, 12 dB/octave minimum  
Pass Frequency:  
Recommended Crossover 100 Hz, 24 dB/octave  
Frequency Range:  
Axial Sensitivity, SPL1: 98 dB (1 watt@1m)  
Max Calculated SPL  
Long Term1: 131 dB  
Peak1: 137 dB  
Long-Term Power 600 watts  
Handling:  
Short-Term Power 2,400 watts  
Handling:  
LF Transducer: EVX180B Cast Frame 18-inch  
Woofer, 4" Voice Coil  
Impedance: 8 ohms  
Enclosure Material: 13-Ply Birch Plywood  
Grille: Powder-Coated 16-GA Steel, Fabric  
Backed  
Input connectors: (2) Neutrik Speakon NL4's  
Dim (H x W x D): 35.5" x 17.7" x 23.6"  
(902mm x 450mm x 599mm)  
Net Weight: 100 lbs (45 kg)  
Shipping Weight: 109 lbs (49 kg)  
1 Half Space Measurements.  
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