EAW CB259 User Manual

TECHNICAL SPECIFICATIONS CB259

CINEMA SYSTEMS

DESCRIPTIVE DATA continued

DESCRIPTIVE DATA

Powering Mode Bi-amplified

System Crossover

(500 Hz minimum, 800 Hz
recommended, 24 dB/octave)

EAW CX300-CB259
Recommended High-Pass
Frequency (24 dB/Octave) 30 Hz

Cabinet Type (shape) Rectangular (with externally mounted

horn/driver assembly

Enclosure Materials 3/4-in Medium Density Fiberboard

with 15 mm baltic birch baffle

Finish Textured black

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

loaded pushbutton

(accepts bare wire)

Dimensions inches millimeters

Height 54.19 1376

Width 24.44 621

Depth (min.) 17.75 633

Depth (max.) 24.94 633

Weights pounds kilograms

Net Weight 160.5 73.0

Shipping Weight 177.5 80.8

Part Number 999265

LF Subsystem & Loading 2x15-in vented

HF Subsystem & Loading 1x2-in exit compression driver on

CD horn

Configuration 2-way, Full Range

• For medium-sized theaters

• Bi-amplified 2-way screen channel loudspeaker

The CB259 high power, full range two-way screen loudspeaker system
fills medium-sized theaters with all the high-impact, full-range
sound encoded on today’s digital soundtracks while reproducing
voices clearly and naturally.

The two component system includes a BV253C vented dual 15-in low
frequency unit and a HK294 high frequency system - a medium for­mat 90°x40° HF horn loading a large diaphragm 2-in exit compres­sion driver.

The HK294’s constant directivity horn assures even distribution of
high frequency information to every seat in the house. Its shortened
horn throat minimizes horn throat distortion, eliminating the 700 Hz
“honk” that has plagued cinema HF horns.

The BV253C’s optimally vented enclosure uses the enclosure’s 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.

The adjustable steel bracket attaching the HF horn to the LF enclo­sure can be positioned at one of three mounting points for optimum
front/rear HF horn placement. The bracket 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 accommo­dates 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.

APPLICATION

PRODUCT INFORMATION

TECHNICAL SPECIFICATIONS CB259

24.44

.12

TOP

20.88

7.28

FRONT

1.50

LEFT SIDE

39.50

17.75

3.69

5.28

RIGHT SIDE

7.19

54.19

1.50

CB259

999265
exp 2/24/97 shb

ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED.

Frequency Response )

+

3 dB 42 Hz - 17 kHz

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

LF 101

HF 111

Impedance (Ohms)

LF 4

HF 12

Power Handling, AES Standard (Watts)

LF 1000

HF 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

NOMINAL DATA

COMPONENTS & CONSTRUCTION

COMPONENTS & CONSTRUCTION continued

The CB259 is a biamplified, two way, high-output, full range loud­speaker system intended for use in cinema applications. It features
dual 15-in low frequency transducers mounted in a compact, vented
enclosure and a titanium diaphragm compression driver mounted to
a large, 2-in throat, 90°x40° coverage pattern, constant directivity
horn.

The CB259 requires use of an external active electronic crossover.
The recommended crossover point is 800 Hz.

Input connectors for the HF section are dual spring loaded push but­ton type, designed to accommodate bare or tinned leads, with a 2­terminal 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
15-mm void-free, gross-grain-laminated 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 formulated
compound which is non-resonant, lightweight and non-reflective.
The adjustable steel HF section bracket can be locked once it is posi­tioned.

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

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

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 #888118(B) May 2001 ª Printed in USA