Technical Specifications CR57
PRODUCT INFORMATION
At one time, surround speakers were used only to provide ambient
effects, but today they must reproduce signal equivalent to the main
channels. In addition to wide dispersion, surround systems must provide flat, full range frequency response and high power handling.
The CR57 full range surround system is engineered for tomorrow’s full
bandwidth digital surround tracks. A massive woofer is combined with
a horn-loaded compression driver. The slanted baffle and wide dispersion pattern allow it to be mounted overhead to cover a wide seating
area. High power handling allows designers to use fewer enclosures to
cover a given seating area, reducing costs for both equipment and
installation. This system's powerful, full range frequency response provides detailed, natural reproduction of the 360° aural arena.
THX certification is pending.
COMPONENTS & CONSTRUCTION
The full range cinema surround loudspeaker system employs one 15-in
cone transducer mounted in an optimally vented enclosure and one
1-in exit, titanium diaphragm compression driver mounted to a 90o x
70o dispersion pattern constant directivity horn. The subsystems are integrated with a complex, multicomponent, passive crossover and equalization network.
The enclosure is constructed of 15-mm thickness, void-free, cross-grainlaminated birch plywood. 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 two-terminal 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.
SPECIFICATIONS
CR57
3/8-16 FEMALE THREAD SUSPENSION POINT
ALL DIMENSIONS ARE IN INCHES UNLESS STATED OTHERWISE.
18.75
2.00
30.25
15.12
FRONT
BACK
14.75
2.00
4.63
2.00
RIGHT SIDE
15.88
20°
TOP
LEFT SIDE
One Main Street, Whitinsville, MA 01588 • (508) 234-6158 • FAX (508) 234-8251 • BBS (800) 889-2540 • Email info@eaw.com • Web http://www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. • PUB# CR57/2/20/96 • Printed In USA
CINEMA SERIES
6.00
Axial Frequency Response
±3 dB 45 Hz – 18 kHz
Power Response
±3 dB 50 Hz – 2 kHz, rolls off at 3dB
per octave above 2 kHz (per SMPTE
X-curve specifications)
Axial Sensitivity
1W @ 1m
98 dB SPL
Impedance
Nominal 8Ω
Power Handling
AES Standard 600 Watts
100 Hr Sine Wave 300 Watts
Maximum Output
Peak 126 dB SPL @ 1m
Long Term 123 dB SPL @ 1m
Additional Descriptive Data
LF Subsystem 15-in Cone, Vented
HF Subsystem 1-in Compression Driver;
90o h x 70o v constant directivity horn
Crossover
Passive
Connectors
2 Terminal Barrier Strip, top mounted
Finish Flat Black Polyurethane
Grill Black Cloth
Dimensions & Weights
Height 18.75 in (476.25 mm)
Width 30.25 in (768.35 mm)
Depth (Top) 14.75 in (374.65 mm)
Depth (Bottom)
8.0 in
(203.20 mm)
Net Weight 75 lb
(34.09 kg)
Shipping Weight 83 lb
(37.35 kg)