EAW Cinema CB523M User Manual

CINEMA SERIES
One Main Street, Whitinsville, MA 01588 • (508) 234-6158 • FAX (508) 234-8251 • Email info@eaw.com • Web http://www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. • CB523M PUB#888125 Rev(A)/6/1/99 • Printed In USA
THX is a registered trademark of Lucasfilm, Ltd.
Technical Specifications CB523M
APPLICATION
• Approved for use in THX®-certified theaters
• For medium-sized theaters
• Triamplified 3-way screen channel loudspeaker
PRODUCT INFORMATION
The CB523M triamplified three-way full-range screen channel loud-
speaker system has been approved for use in THX-certified 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 BV253C dual 15-in low
frequency enclosure and an HK523M mid/high section.
The low frequency enclosure uses optimally tuned enclosure venting
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 enclosure’s shallow dimen-
sion 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° x
45° 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 section in both the
horizontal and vertical planes and can be locked once it is posi-
tioned.
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 compres-
sion driver. The input panels are located on the sides and top of the
enclosures for convenient access in cramped installation areas.
All external components feature a textured black finish to eliminate
the reflection of light through perforated cinema screens.
999825 (1)
exp 11/16/98 dpm
CB523M
INDICATES 3/8-16 THREADED MOUNTING HOLE
INDICATES 5/16-18 THREADED MOUNTING HOLE
INDICATES CENTER OF BALANCE
INPUT
TOP
BACK
ACCESS PANEL
MIDRANGE DRIVER
BRACKET,
EAW #606098
HK523M,
EAW #999826
5.21
25°
BV253C,
EAW #999418
INPUT
39.50
RIGHT SIDE
15.88
17.75
24.31 (POSITION 1)
20.82 (POSITION 2)
17.00 (POSITION 3)
3.66
24.43
FRONT
69.41

EAW Cinema CB523M Specifications

General

Nominal Impedance	8 Ohms
Configuration	2-way
LF Subsystem	1 x 15"
HF Subsystem	1 x 1.4"
Input Connection	Dual NL4
Enclosure Material	Plywood
Type	Full Range
Sensitivity	99 dB
Drivers	15" LF, 1.4" HF
Enclosure	Plywood

Summary

Application

Product Information

CB523M System Description

Triamplified three-way full-range loudspeaker system approved for THX-certified theaters.

Low Frequency Enclosure Features

Dual 15-in low frequency enclosure with optimally tuned venting for extended LF response and reduced distortion.

Mid/High Section Features

Horn-loaded 10-in cone and 1.4-in exit compression driver with 90°x45° horn.

Mounting and Connectivity

Adjustable bracket for MF/HF aiming, barrier strips for LF/MF, bind posts for HF.

Components and Construction

System Configuration

THX-approved, triamplified three-way system with BV253C LF enclosure and HK523M mid/high section.

Low Frequency Enclosure Construction

BV253C dual 15-in vented enclosure made of 3/4-in Medium Density Fiberboard (MDF).

Mid/High Section Construction

HK523M with horn-loaded 10-in midrange and 1-in exit compression driver, 3/4-in MDF construction.

Input Connectors

2-terminal barrier strips for LF/MF, bind posts for HF on compression driver.

Nominal Data & Specifications

Frequency Response

±3 dB from 42 Hz to 19 kHz.

Axial Sensitivity

LF: 101 dB, MF: 108 dB, HF: 112 dB (1 Watt @ 1m).

Impedance

LF: 4 Ohms, MF: 8 Ohms, HF: 12 Ohms.

Power Handling

LF: 1000W, MF: 325W, HF: 200W.

Maximum Output

Peak SPLs: LF 137.0 dB, MF 139.1 dB, HF 141.0 dB.

Coverage Angle

Horizontal 90 degrees, Vertical 45 degrees (-6 dB points).

Dimensions

Height: 67.63 in, Width: 24.80 in, Depth: 17.75 in.

Weights

Net Weight: 235 lbs, Shipping Weight: 253 lbs.