Electro Voice Portable Speaker QRx153 User Manual

QRx153  
15-Inch Three-Way Biamped  
Speaker System with  
Horn-Loaded Midrange  
Key Features:  
8-inch MF horn loaded for 75o x 50o pattern  
control to 500 Hz  
3-inch DH7 HF compression driver  
15-inch DL15 woofer is loaded into vented  
enclosure  
Asymmetric MF and HF horns have  
+15o / -35o coverage  
RMDTM – Ring-Mode Decoupling for vocals  
and mids with superb fidelity at any listening  
level  
The EV P1202 Precision Series Amplifier and  
M153 module are designed to power the  
QRx153 perfectly  
L-track rigging is installed on top and  
bottom of the enclosure  
General Description:  
Technical Specifications:  
The QRx153/75 is a biamped three-way full-range  
loudspeaker system capable of filling performance spaces  
with beautifully balanced audio and high acoustic output  
capability.  
Freq. Range (-10 dB):  
42Hz - 20kHz  
Freq. Response (-3 dB):  
Long Term Pwr Handling 1  
50Hz - 16kHz  
:
400W LF / 150W MF/HF  
Short Term Pwr Handling 1 : 1600W LF / 600W MF/HF  
The QRx153 is designed to be bi-amplified at 500 Hz utilizing  
a DX38 digital controller, or a P1202 power amplifier with  
M153 control module. All QRx models use 13 ply plywood,  
Futura coating, and steel grilles for wear and weather  
resistance. The QRx153 is trapezoidal with 15o side angles.  
“L” track rigging is installed on the enclosure top and bottom.  
Small arrays can be flown for live work, or the system can be  
suspended horizontally or vertically for fixed installations.  
Sensitivity (1W / 1m):  
Impedance:  
98dB LF / 105dB MF/HF  
8 ohms LF / 12 ohms MF/HF  
130 dB @ 1m  
Max. Calc. SPL Output:  
Horizontal Coverage:  
Vertical Coverage:  
LF to MF Crossover:  
Passive Crossover Freq.:  
LF Transducer:  
75°  
50° (Up 15°, Down 35°)  
500 Hz  
Thanks to its combination of the DL15ST woofer and large  
enclosure volume; the horn-loaded 8-inch midrange driver  
and powerful 3-inch compression driver, the EV QRx153/75  
has extended response for high-level, high fidelity applications  
without the need of a subwoofer. The horn-loaded midrange  
driver provides excellent pattern control in this critical  
response area. Both MF and HF horns are aimed downward  
10o to provide optimal aiming when the speaker is elevated  
above the audience. This also helps control sound to provide  
greater intelligibility.  
1.2 kHz  
15-inch DL15ST  
MF8 8-inch MF / DH7 3-inch HF  
MF/HF Transducers:  
Trapezoidal 13-ply (18mm) Baltic  
Birch (15° Side Angles)  
Enclosure:  
Suspension:  
Connectors:  
Q and DI:  
L-Track w/Ancra fittings  
(2) Neutrik Speakon NL4's  
Q = 12 / DI = 10.8  
Recommended Controller: Dx38  
The QRx153/75 has an excellent combination of performance  
and flexibility for demanding audiences.  
Grille:  
Powder Coated Steel, Fabric backed  
Dim (H x W x D) in:  
Dim (H x W x D) mm:  
Net Weight:  
41.5” x 18.4” x 19.12”  
1240 mm x 467 mm x 485 mm  
97 lbs (44.09 kg)  
Shipping Weight:  
105 lbs (47.72 kg)  
1 EIA-RS426A  
 

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