EAW CB2591 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. • PUB# CB2591-888120 (A)/2/2/99 • Printed In USA
THX is a registered trademark of Lucasfilms Ltd.
Technical Specifications CB2591
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 compres-
sion 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.
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 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.
999528 (0)
exp 11/16/98 dpm
CB2591
INDICATES 3/8-16 THREADED MOUNTING HOLE
INDICATES 5/16-18 THREADED MOUNTING HOLE
INDICATES CENTER OF BALANCE
TOP
28.91
FRONT
39.50
24.50 16.36
7.25
17.75
RIGHT SIDE
5.25
2.25
1.50
13.13
71.75
20°
7.5°
INPUT
BV253C
HK523

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. •PUB# CB2591-888120 (A)/2/2/99 •Printed In USA
THX is a registered trademark of Lucasfilms Ltd.
Technical Specifications CB2591
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
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. Exten-
sive 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.