EAW Cinema CR57F Technical Specifications

Technical Specifications CR57F

PRODUCT INFORMATION

The CR57F two-way, passive, full range cinema surround loudspeaker
system is engineered to reproduce today’s stereo full bandwidth
digital surround tracks from wall mounted positions high above the
audience. It features a 15-in woofer and a 1-in exit compression
driver loaded with a wide dispersion constant directivity horn.

The CR57F is specifically engineered to cover a larger seating area
with higher quality, higher output sound than traditional cinema

surrounds. With 500 Watts AES standard power handling and a 90°
x 70° 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 system produces 8 - 15 dB more output than traditional
surrounds.

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.

Six threaded mounting points on top of the enclosure allow the
system to be "dead hung" at a variety of vertical and horizontal
angles. Two mounting points (at the center of gravity on each side)
accept an adjustable wall mount bracket. Two additional mounting
points (one at the upper rear corner of each side) provide additional
mounting flexibility. A single mounting point on the bottom accepts
an L-bracket. Finally, a single pull back point on the back of the
enclosure is provided.

The passive crossover/filter network included in the CR57 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 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 • [phone] • FAX [phone] • Email [e-mail] • Web http://www.eaw.com

EAW products are continually improved. All specifications are therefore subject to change without notice. • PUB# CR57F/2/22/97 • Printed In USA

Technical Specifications CR57F

COMPONENTS & CONSTRUCTION

The CR57 two-way 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° x 70° dispersion pattern constant directivity horn.

The subsystems are integrated with a complex, multicomponent,
passive crossover/filter network.

The enclosure is constructed of 15mm thickness, void-free, cross­grain-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 transfer into the audience area. A total of
twelve 3/8"-16 threaded mounting points facilitate a wide variety
of mounting option.

The input connector, located on the top of the enclosure, is a two­terminal 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.

DESCRIPTIVE DATA

Part Number 999400

LF Subsystem & Loading 1 x 15" vented

HF Subsystem & Loading 1 x 1" compression driver

on 90 x70 C.D. horn

Number of Audio Bands 2-way

Type of Audio Bands Full Range

Powering Mode Passive

Cabinet Type (shape) Rectangular w/slanted baffle (20°)

Enclosure Materials 15mm birch plywood

Finish Flat Black

Connectors 2 terminal barrier strip

Suspension Hardware (7) 3/8-16 threaded inserts

Grill Black cloth

Options wall mount bracket (606067)

NOMINAL DATA

Frequency Response (Hz)

±3 db 45 Hz – 19 kHz

Efficiency / Axial Sensitivity (dB SPL/1 Watt/1m)

Full Range Passive 98

Impedance (Ohm)

Full Range Passive 8

Power Handling (Watts)

Full Range Passive AES Standard500

Calculated Maximum Output (dB SPL)

Full Range Passive Peak 131.0

Full Range Passive Long Term 125.0

Nominal Coverage Angle / -6 dB points (degrees)

Horizontal 90

Vertical 70

Dimensions

Height 17.25 in 438 mm

Width 29.75 in 756 mm

Depth (Top) 15.25 in 387 mm

Depth ( Bottom) 10.5 in 267 mm

Weights

Net Weight 56 lb 25.5 kg

Shipping Weight 64 lb 29.1 kg

One Main Street, Whitinsville, MA 01588 • [phone] • FAX [phone] • Email [e-mail] • Web http://www.eaw.com

EAW products are continually improved. All specifications are therefore subject to change without notice. • PUB# CR57F/2/22/97 • Printed In USA

CINEMA SERIES