CINEMA SERIES
Technical Specifications CR57
One Main Street, Whitinsville, MA 01588 • (508) 234-6158 • FAX (508) 234-8251 • BBS (800) 889-2540 • Email [email protected] • 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
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 pro-
vide 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 disper-
sion 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 pro-
vides 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 90
o
x
70
o
dispersion pattern constant directivity horn. The subsystems are in-
tegrated with a complex, multicomponent, passive crossover and equal-
ization network.
The enclosure is constructed of 15-mm thickness, void-free, cross-grain-
laminated 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 trans-
fer 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 at-
tached with multiple threaded fasteners.
SPECIFICATIONS
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
8
Ω
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;
90
o
h x 70
o
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)
6.00
2.00
2.00
TOP
2.00
RIGHT SIDE
FRONT
BACK
18.75
LEFT SIDE
4.63
15.12
30.25
15.88
14.75
3/8-16 FEMALE THREAD SUSPENSION POINT
20
°
CR57
ALL DIMENSIONS ARE IN INCHES UNLESS STATED OTHERWISE.
