EAW CR72i User Manual

TECHNICAL SPECIFICATIONS CR72i

CINEMA SYSTEMS

DESCRIPTIVE DATA

Part Number 997

LF Subsystem & Loading 1x8-in cone, vented

HF Subsystem & Loading 1x1-in soft dome tweeter

Configuration 2-way, full range

Powering Mode Passive
Recommended High-Pass
Frequency (24 dB/Octave) 50 Hz

Cabinet Type (shape) Rectangular, slant baffle

Enclosure Materials Medium Density Fiberboard

Finish Textured black

Connectors 2 terminal barrier strip

Suspension Hardware (2) 3/8”-16 threaded points (1 per

side) plus (4) 1/4”-20 threaded
inserts on back to accept
Omnimount Series 100 or APC MM024

Grille black cloth on plastic frame

Dimensions inches millimeters

Height 16.09 409

Width 16.50 419

Depth (Top) 12.12 308

Depth (Bottom) 6.26 159

Weights pounds kilograms

Net Weight (approx) 26 11.8

Shipping Weight (approx) 33 15.0

• For small to large cinemas

• Passive 2-way surround channel loudspeaker

• THX® approved

The CR72i two-way, passive, 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 mounted in a slanted baffle.

This system is approved by the THX® division of Lucasfilm, Ltd., for
use in THX® certified theaters.

The CR72i is specifically engineered to cover a larger seating area
with higher quality, higher output sound than traditional cinema
surrounds.

The passive crossover/filter network included in the CR72i goes
beyond merely dividing the signal and actually performs critical
equalization functions. This means it will provide more detailed,
natural reproduction of any sonic event occurring in the 360° aural
arena. The crossover/filter network tailors HF response to match the
SMPTE/ISO 2969 response curve.

The front baffle is angled down 15° to accommodate 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.

The input connector - a 2-terminal barrier strip that accommodates
bare wire, tinned leads or spade lugs - is located on top of the
enclosure. For safety, the cloth grille is attached with multiple
threaded fasteners.

APPLICATION

PRODUCT INFORMATION

TECHNICAL SPECIFICATIONS CR72i

Frequency Response

+

3 dB SMPTE/ISO 2969 “X” curve

66 Hz - 19 kHz

-10 dB 45 Hz

Axial Sensitivity (dB SPL, 1 Watt @ 1m)

Full Range Passive 95

Impedance (Ohms)

Full Range Passive 8

Power Handling, AES Standard (Watts)

Full Range AES Standard 150

Calculated Maximum Output (dB SPL @ 1m)

Full Range Peak 122.8

Full Range Long Term 116.8

Nominal Coverage Angle/-6 dB points (degrees)

Conical 110

NOMINAL DATA

The CR72i two-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. The LF and HF sec­tions are integrated with a complex, multicomponent passive
crossover/filter network which tailors HF response to match the
SMPTE/ISO 2969 response curve.

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 2-termi­nal barrier strip, designed to accommodate bare wire, tinned leads or
spade lugs. For safety, the black cloth grille is attached with
multiple threaded fasteners.

All external components feature a textured, non-reflective, black
finish.

COMPONENTS & CONSTRUCTION

COMPONENTS & CONSTRUCTION continued

exp 11/23/00

CR72i

INDICATES MOUNTING POINT,

3/8-16 THREADED HOLE (RIVNUT)

INDICATES MOUNTING POINT,

5/16-18 THREADED HOLE (OMNI MOUNT)

BOTTOM

6.84

FRONT

REMOVABLE GRILLE
PARTIALLY SHOWN

16.54

C

L

TOP

4.89

6.00

16.50

11.27

4.00

INPUT

C

L

BACK

5.00

2.75

7.00

(17.12)

15°

DIMENSIONS APPLY

TO BOTH SIDES

RIGHT SIDE

11.85

OVER GRILLE

FRAME

7.56

4.34

510974 (A)

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 #888xxx (B) May 2001 • Printed in USA

THX is a registered trademark of Lucasfilms, Ltd.