EAW Cinema CB423M User manual

TECHNICAL SPECIFICATIONS CB423M
CINEMA SYSTEMS
DESCRIPTIVE DATA continued
DESCRIPTIVE DATA
Configuration 3-way
Powering Mode Tri-amplified
Recommended Crossover 350/1475 EAW CX300-CB423M or
THX® specified unit
Cabinet Type (shape) Rectangular
Enclosure Materials LF-3/4-in medium density fiberboard,
1/2-in birch plywood baffle-
MF/HF-MDF
Finish Textured black
Connectors 2x2 terminal barrier strips
(LF and MF) plus 2x bind posts
Dimensions inches millimeters
Height 51.66 1312
Width 24.83 631
Depth 22.20 564
Weights pounds kilograms
Net Weight (approx) 150 68.1
Shipping Weight (approx) 165 74.1
Part Number 997112
LF Subsystem & Loading 1x15-in, vented
MF Subsystem & Loading 1x10-in, horn loaded
HF Subsystem & Loading 1x1.4-in exit compression driver
on CD horn
• Approved for use in THX®-certified theaters
• For small to medium-sized theaters
• Tri-amplified 3-way screen channel loudspeaker
The CB423M tri-amplified three-way full-range screen channel
loudspeaker system has been approved for use in THX® certi-
fied theaters.
Three-way design dramatically advances cinema audio quality
by improving the naturalness and intelligibility of dialog,
eliminating distortion from excessive driver excursion and
extending pattern control into the lower octaves.
The two component system includes a BV423 15-in low fre-
quency enclosure and an HK523M passive mid/high section.
The low frequency enclosure uses optimally tuned enclosure
venting to increase LF response while limiting driver excur-
sion. This method produces less distortion and minimizes
driver strain while extending LF response to the lowest
octaves. The enclosure’s shallow dimension allows convenient
placement behind the screen.
The HK523M MF/HF section features a horn-loaded 10-in cone
and a high power 1.4-in exit compression driver loaded with
a 90°x45° coverage pattern constant directivity horn.
The adjustable steel bracket attaching the MF/HF section to
the LF enclosure can be positioned at one of three mounting
points for optimum front/rear placement. The bracket allows
the MF/HF section to be aimed independently of the LF sec-
tion in both the horizontal and vertical planes and can be
locked once it is positioned.
Input connectors for the LF and MF sections are two-terminal
barrier strips that accommodate bare wire, tinned leads or
spade lugs. Bind posts for the high frequency section are
located directly on compression driver. The input panels are
located on the side and top of the enclosures for convenient
access in cramped installation areas.
APPLICATION
PRODUCT INFORMATION

TECHNICAL SPECIFICATIONS CB423M
997112 (0)
exp 3/1/00 js
CB423M
24.83
TOP
INPUT
INPUT
15.88
RIGHT SIDE
14.88 (POS 1)
22.20 (POS 3)
18.69 (POS 2)
25°
5.21
24.43
3.66
21.75
FRONT
51.66
HK523M
BV423
LEFT SIDE
BRACKET
EAW 606098
ACCESS
PANEL
BACK
Frequency Response
+3 dB 42 Hz - 19 kHz
Axial Sensitivity (dB SPL, 1 Watt @ 1m)
LF 98
MF 108
HF 112
Impedance (Ohms) LF 8
MF 8
HF 12
Power Handling (Watts)
LF 500
MF 325
HF 200
Calculated Maximum Output (dB SPL @ 1m)
LF Peak 131.0
MF Peak 139.1
HF Peak 141.0
LF Long Term 125.0
MF Long Term 133.1
HF Long Term 135.0
Nominal Coverage Angle/-6 dB points (degrees)
Horizontal 90
Vertical 45
NOMINAL DATA
The CB423M is a THX-approved, triamplified three-way, high-
output, full range loudspeaker system intended for use in
behind-screen cinema applications. The two component sys-
tem includes a BV423 15-in low frequency enclosure and an
HK523M mid/high system
The system requires the use of external active electronic
crossovers to integrate all sections.
The BV423 low frequency component features a 15-in woofer
mounted in a vented enclosure for excellent bass extension
and high output level capability.
The HK523M mid/high component features a horn-loaded
10-in midrange driver and a 1.4-in exit compression driver
mounted to a medium format 90°x45° constant directivity
horn.
Two-terminal barrier strip input connectors that accommo-
date bare wire, tinned leads or spade lugs are included for the
low-and mid frequency sections. Bind posts for the high fre-
quency section are located directly on compression driver.
The LF cabinet is constructed of 3/4-in medium density fiber-
board (MDF). The HK523M mid/high section is constructed of
3/4-in MDF with the exception of the mid frequency flare
which is void-free, 18-ply-to-the-inch, Baltic birch plywood
backed with high density polyurethane foam. Both enclosures
are coated with a non-reflective, textured black finish and the
HF horn is constructed of flat black structural foam plastic.
All external components feature a non-reflective, textured
black finish to eliminate the reflection of light through per-
forated cinema screens.
COMPONENTS & CONSTRUCTION
COMPONENTS & CONSTRUCTION continued
One Main Street, Whitinsville, MA 01588 508 234 6158 FAX [phone] [e-mail] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. CB423M/2pp August 2001 Printed in USA