EAW Cinema CR71 Technical Specifications
Technical Specifications CR71
PRELIMINARY INFORMATION
PRODUCT INFORMATION
The CR71 two-way, passsive, full range cinema surround loudspeaker
system is engineered to reproduce today’s full bandwidth digital
surround tracks in smaller cinemas. It features an 8-in woofer and
a 1-in dome tweeter loaded with EAW’s proprietary WGP® (Wave
Guide Plate®) mounted in a slanted baffle. THX certification is
pending.
The CR71 is specifically engineered to cover a larger seating area
with higher quality, higher output sound than traditional cinema
surrounds. With 150 Watts AES standard power handling and a 100°
conical coverage pattern, it can be mounted higher and cover more
seats than traditional surrounds, meaning fewer amps, fewer processors and reduced installation time. Higher placement also lets the
systems cover a larger area "across" the room creating a larger area
of stereo surround coverage than traditional surround placement.
The WGP’s® extra wide dispersion pattern lets CR71’s be used in
cinemas with low ceilings without sacrificing coverage of fringe
seats.
The passive crossover/filter network included in the CR71 is so
complex that it goes beyond merely dividing the signal and actually
performs critical equalization functions. This means it will provide
more detailed, more natural reproduction of any sonic event
occurring in the 360° aural arena. The crossover tailors HF response
to match SMPTE/ISO 2969 “X” Curve.
CR71
FRONT
LEFT SIDE
510487
exp 2/24/97 shb
3/8-16 THREADED MOUNTING HOLES.
ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED.
8.25
1.73
5.28
20°
9.94
BACK
16.50
8.25
4.38
7.28
12.50
TOP
4.38
RIGHT SIDE
BOTTOM
4.50
10.25
The front baffle is angled down 20° to accomodate overhead
mounting. The optimally vented enclosure increases LF response
while limiting driver excursion. This method produces less distortion
and minimizes driver strain while extending LF response to the
lowest octaves.
Seven mounting points (two on top, two on each side, on on back)
accomodate a variety of mounting options. The back of the enclosure
also accepts an Omnimount.
The input connector – a 2-terminal barrier strip that accommodates
bare wire, tinned leads or spade lugs - is located on top of the
enclosure. The enclosure features a "dead" flat black finish to
eliminate visual intrusion of visible surrounds. For safety, the cloth
grill is attached with multiple threaded fasteners.
CINEMA SERIES
One Main Street, Whitinsville, MA 01588 • (508) 234-6158 • FAX (508) 234-8251 • Email info@eaw.com • Web http://www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. • PUB# CR71/2/22/97 • Printed In USA
Technical Specifications CR71
COMPONENTS & CONSTRUCTION
The CR71 2-way, passive, full range cinema surround loudspeaker
system includes one 8-in cone transducer mounted in an optimally
vented enclosure and one 1-in soft dome driver coupled with a
WGP®. The subsystems are integrated with a complex, multicomponent passive crossover/filter network.
The enclosure is constructed of 3/4-in Medium Density Fiberboard
(MDF). Extensive internal bracing is employed to minimize panel
resonances resulting from the large acoustical energies generated
within the enclosure while maximizing acoustical energy transfer
into the audience area.
Input connectors, located on the top of the enclosure, are 2terminal barrier strip, designed to accommodate bare wire, tinned
leads or spade lugs. The enclosure is finished in flat black polyurethane and includes a black cloth grill. For safety, the grill is attached
with multiple threaded fasteners.
PRELIMINARY INFORMATION
DESCRIPTIVE DATA
Part Number 999537
LF Subsystem & Loading 1 x 8" vented
HF Subsystem & Loading 1 x 1" soft dome in WGP
Number of Audio Bands 2-way
Type of Audio Bands Full Range
Powering Mode Passive
System Crossover 2 kHz
Recommended High-Pass
Frequency (24 dB/Octave) 40 Hz
Cabinet Type (shape) rectangular, slant baffle
Enclosure Materials 3/4" MDF
Finish Flat Black
Connectors 2 terminal Barrier Strip
Suspension Hardware 5 x 3/8-16 threaded inserts, 2 top, 1
each side, 1 rear
Grill Black Cloth
Mounting Bracket
(part number) 606005
NOMINAL DATA
Frequency Response (Hz)
±3 db Low Frequency Limit: 60 Hz; High
Frequency Response follows the SMPTE/
ISO 2969 “X” Curve
Efficiency / Axial Sensitivity (dB SPL/1 Watt/1m)
95
Impedance (Ohm)
8
Power Handling (Watts)
Standard 150
Calculated Maximum Output (dB SPL)
Peak 122.8
Long Term 116.8
Nominal Coverage Angle / -6 dB points (degrees)
Horizontal 90
Vertical 90
Dimensions
Height 10.25 in 260 mm
Width 16.5 in 419 mm
Depth (Top) 10 in 254 mm
Depth (Bottom) 6.75 171
Weights
Net Weight 24 lb 10.9 kg
Shipping Weight 30 lb 13.7 kg
One Main Street, Whitinsville, MA 01588 • (508) 234-6158 • FAX (508) 234-8251 • Email info@eaw.com • Web http://www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. • PUB# CR71/2/22/97 • Printed In USA
CINEMA SERIES
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