EAW Cinema CB259 User manual

CINEMA SERIES
One Main Street, Whitinsville, MA 01588 • [phone] • FAX [phone] • Email [email protected] • Web http://www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. • CB259 PUB#888118 Rev(A)/6/1/99 • Printed In USA
Technical Specifications CB259
APPLICATION
• For medium-sized theaters
• Biamplified 2-way screen channel loudspeaker
PRODUCT INFORMATION
The CB259 high power, full range 2-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°x 40°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 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.
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 posi-
tioned.
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 connec-
tors are directly on the compression driver.
All components feature a textured black finish to eliminate the
reflection of light through perforated cinema screens.
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.

CINEMA SERIES
One Main Street, Whitinsville, MA 01588 • [phone] • FAX [phone] • Email [email protected] • Web http://www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. • CB259 PUB#888118 Rev(A)/6/1/99 • Printed In USA
Technical Specifications CB259
DESCRIPTIVE DATA
LF Subsystem & Loading 2x 15-in vented
HF Subsystem & Loading 1x 2-in exit compression driver
on CD horn
Number of Audio Bands 2-way
Type of Audio Bands Full Range
Powering Mode Biamplified
System Crossover Active (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 MDF with 15mm Baltic birch
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 -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
Recommended Complementary Systems
Sub SB184C, SB185C, SB284C
Dimensions Inches Centimeters
Height 54.19 137.6
Width 24.44 62.1
Depth (min.) 17.75 45.1
Depth (max.) 24.94 63.3
Weights Pounds Kilograms
Net Weight 160.5 73.0
Shipping Weight 177.5 80.8
COMPONENTS & CONSTRUCTION
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 com-
pact, vented enclosure and a titanium diaphragm compression driver
mounted to a large, 2-in throat, 90°x 40°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
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
15-mm 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 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 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.