QRx-112/75
Loudspeaker System
General Product Description
The QRx-112/75 is a two-way, full-range loudspeaker system that
incorporates a 12-inch woofer and a 3-inch voice coil compression
driver on an asymmetrical 75-degree x 50-degree fully rotatable
constant-directivity horn. In factory-delivered position the horn
provides a 15-degree up/35-degree down vertical coverage pattern.
The five-sided cabinet design allows this main PA system cabinet
to easily conform to duties as a floor monitor or to be tucked tightly
against a ceiling for low-profile applications. The fully rotatable horn
means that regardless of cabinet position, pattern control is fully
user-determined.
The QRx-112/75 is a good solution for small-to-medium size rooms
as a main PA, providing optimized midrange reproduction for speech
intelligibility and vocal clarity at moderate levels. As a floor monitor,
the tight and clear midrange coupled to a large format HF diaphragm
helps cut through stage rumble while delivering smooth reproduction.
The asymmetrical horn can allow a single box to more adequately
direct the high frequencies as needed, as well as streamline multi-
cabinet arrays by extending horizontal coverage while minimizing
overlapping and allowing tighter packs between the cabinets.
Architects’ and Engineers’ Specifications
The two-way, full-range loudspeaker system shall incorporate one
12-inch transducer with a cast aluminum basket as the LF
component and one 3-inch diameter voice coil/diaphragm
compression driver as the HF component. The compression driver
shall be mounted on a 75-degree x 50-degree asymmetrical constant
directivity horn with a factory-delivered positioning of 15-degrees
up/35-degrees down/50-degrees horizontal configuration. The horn
shall be constructed of a material and design so as to be capable,
structurally, of supporting the HF driver without any internal braces
or suspension, allowing a full 360-degree rotation of the horn. The
enclosure shall be vented and tuned for optimum low-frequency
extension. An internal passive filter network shall be included
providing crossover filters or component bandpasses and nominal
system voicing. The input panel shall incorporate two switches
allowing external configuration between biamped or passive
Speaker Description:
Part Number ............................................................... 301018-001
LF Section & Components .. 12-inch woofer in vented enclosure
HF Section & Components ................... DH7 compression driver
with 3-inch titanium diaphragm on asymmetric 75 x 50 horn
System Configuration .................................... Two-way, full-range
Powering Configuration ................. Switchable passive or biamp
Recommended Active High-Pass Frequency (12 dB/octave
minimum) ............................................................................... 45 Hz
Recommended Active Crossover Frequency (24 dB/octave
typical) ............................................................................... 1500 Hz
Passive Crossover Frequency ....................................... 1800 Hz
Cabinet Type (shape) ....................................... Modified trapezoid
Enclosure Materials ..................................... 13-ply birch plywood
Finish .................................................. Black acrylic textured paint
Connectors ........................................................ Two Neutrik
®
NL4
Suspension Hardware ............................. L-track top and bottom,
Single-stud plate on back for pull up
Grille ................................................... Powder-coated 16-GA steel
Options
WHI - white textured paint
UN - unfinished
Accessories ............. SST-1 single stud rigging fitting (3 included)
operation. Input connections shall be accommodated with two
paralleled NL4 female Speakon
®
connectors.
Loudspeaker system frequency response shall be no less than 75
Hz to 15 kHz (-3 dB) measured on axis. The loudspeaker shall
produce a sound pressure level (SPL) of 98 dB on axis at 1 meter
with a power input of 1 watt and shall be capable of sustaining a full
power, long term average output of 125 dB on axis at 1 meter. The
full-range system with passive network engaged shall handle 300
watts of amplified power long-term in compliance with AES-EIA
standards and have a nominal impedance of 8 ohms.
The loudspeaker enclosure shall be constructed of 13-ply void-free
cross-grain-laminated Birch plywood. It shall be finished in black or
white acrylic paint or available unfinished. It shall have five sides
with the fifth side angle as such to provide stable and safe placement
of the cabinet on its side for floor monitor applications. Handles
KEY FEATURES
•
Fully rotatable asymmetrical horn for use in
any cabinet position
•
Externally switchable biamped or passive
operation
