EAW CB2591 User Manual

Technical Specifications CB2591

CINEMA SERIES

APPLICATION

• For large cinemas

• Biamplified 2-way screen channel loudspeaker

• THX®–Approved

PRODUCT INFORMATION

The CB2591 large format 2-way screen loudspeaker system is
designed to meet all THX requirements for large theaters. The
CB2591 is approved by the THX division of Lucasfilm, Ltd., for use
in THX-certified theaters.

The two component system includes a BV253C vented dual 15-in low
frequency unit and EAW’s HK2591 high frequency system – a large
format 90° x 40° horn loading a large diaphragm 2-in exit compres­sion driver.

The HK2591's large format HF cinema horn ensures even distribution
of HF information over the entire audience area.

The BV253C’s optimally vented enclosure uses enclosure resonance
to increase LF response while limiting driver excursion. This method
produces less distortion and minimizes driver strain while extending
LF response to the lowest octaves.

CB2591

28.91

39.50

24.50

FRONT

16.36

71.75

INDICATES 3/8-16 THREADED MOUNTING HOLE

INDICATES 5/16-18 THREADED MOUNTING HOLE

INDICATES CENTER OF BALANCE

20°

7.25

7.5°

HK523

INPUT

BV253C

5.25

2.25

The LF enclosure has 3 mounting points to allow optimum front/rear
positioning of the HF component. The adjustable mounting bracket
attaching the HF horn to the LF enclosure allows the HF horn to be
aimed independently of the LF section in both the horizontal and
vertical planes and can be locked once it is positioned.

The LF section includes a two-terminal barrier strip that accomodates
bare wire, tinned leads or spade lugs. The HF component uses heavy
duty spring-loaded push button type connectors. Input connectors
for the LF section are located on the side of the enclosure for
convenient access in cramped installation areas. HF input connec­tors are directly on the compression driver.

All components feature a textured black finish to eliminate the
reflection of light through perforated cinema screens.

1.50

17.75

13.13

RIGHT SIDE

TOP

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# CB2591-888120 (A)/2/2/99 • Printed In USA

THX is a registered trademark of Lucasfilms Ltd.

999528 (0)

exp 11/16/98 dpm

Technical Specifications CB2591

CINEMA SERIES

COMPONENTS & CONSTRUCTION

The CB2591 is a two-way, high output, full range loudspeaker system
intended for use in behind-screen cinema applications. It features
dual 15-in low frequency transducers mounted in a compact, vented
enclosure and a 2-in exit titanium diaphragm compression driver
mounted to a large format 90° x 40° constant directivity horn.

The CB2591 requires an external active electronic crossover. The
recommended crossover point is 500 Hz. Input connectors for the HF
section are dual spring loaded push-button type, designed to
accommodate bare or tinned leads, with a 2-terminal barrier strip for
the LF section. Separate input connectors are provided for each
section.

The low frequency enclosure is constructed of 3/4-in thick Medium
Density Fiberboard (MDF) with the exception of the baffle which is
15mm void-free, cross-grain-laminated Baltic birch plywood. Exten­sive internal bracing is employed to minimize panel resonances
resulting from the large acoustical energies generated within the
enclosures.

The high frequency horn is constructed from a specially dampened
fiberglass which is non-resonant, lightweight and non-reflective.

The adjustable mounting bracket attaching the HF horn to the LF
enclosure can be positioned at one of three mounting points for
optimum HF horn placement. It allows the HF horn to be aimed
independently of the LF section in both the horizontal and vertical
planes and can be locked once it is positioned.

DESCRIPTIVE DATA

Part Number 999528

LF Subsystem & Loading 2x 15-in, vented

HF Subsystem & Loading 1x 2-in exit compression driver on 90x40

horn

Number of Audio Bands 2-way

Type of Audio Bands Full Range

Powering Mode active

System Crossover 500 Hz at 24 dB/oct minimum - EAW

CX300-CB2591

Recommended High-Pass

Frequency (24 dB/Octave) 30 Hz

Cabinet Type (shape) rectangular LF cab with externally

mounted HF horn

Enclosure Materials 3/4-in MDF with

15mm birch plywood baffle

Finish Textured Black

Connectors LF- 2 terminal barrier strip; HF - spring-

loaded pushbutton (accepts bare wire)

NOMINAL DATA

Frequency Response (1 Watt @ 1m)

±3 dB 42 Hz - 18 kHz

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

LF 101

HF 111

Impedance (Ohms)

LF 4

HF 12

Power Handling, AES Standard (Watts)

LF AES Standard 1000
HF AES Standard

(with 500 Hz crossover) 100

Calculated Maximum Output (dB SPL @ 1m)

LF Peak 137.0

HF Peak 137.0

LF Long Term 131.0

HF Long Term 131.0

Nominal Coverage Angle/-6 dB points (degrees)

Horizontal 90

Vertical 40

Recommended Complementary Systems

Sub SB184C, SB185C, SB284C

Dimensions Inches Centimeters

Height 77.75 197.5

Width 29 73.7
Depth 34.19 86.8

Weights Pounds Kilograms

Net Weight 182 82.6

Shipping Weight 195 88.5

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# CB2591-888120 (A)/2/2/99 • Printed In USA

THX is a registered trademark of Lucasfilms Ltd.