EAW CB423M User Manual

Technical Specifications CB423M

CINEMA SERIES

APPLICATION

• Approved for use in THX®-certified theaters

• For small to medium-sized theaters

• Triamplified 3-way screen channel loudspeaker

PRODUCT INFORMATION

The CB423M triamplified three-way full-range screen channel loud­speaker 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 BV423 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 dimen­sion allows convenient placement behind the screen.

CB423M

24.83

TOP

HK523M

BRACKET
EAW 606098

BV423

INPUT

24.43

FRONT

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 posi­tioned.

3.66

21.75

51.66

ACCESS
PANEL

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

BACK

5.21

25°

15.88

22.20 (POS 3)

18.69 (POS 2)

14.88 (POS 1)

INPUT

enclosures for convenient access in cramped installation areas.

All external components feature a non-reflective, textured black
finish to eliminate the reflection of light through perforated cinema
screens.

997112 (0)

exp 3/1/00 js

LEFT SIDE

RIGHT SIDE

THX is a registered trademark of Lucasfilm, Ltd.

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# CB423M-888165 (A)/3/1/00 • Printed In USA

Technical Specifications CB423M

CINEMA SERIES

COMPONENTS & CONSTRUCTION

The CB423M is a THX-approved, triamplified three-way, high­output, full range loudspeaker system intended for use in behind­screen cinema applications. The two component system 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° x 45° constant directivity horn.

Two-terminal barrier strip input connectors that accommodate bare
wire, tinned leads or spade lugs are included for the low- and mid
frequency sections. Bind posts for the high frequency section are
located directly on compression driver.

The LF cabinet is constructed of 3/4-in Medium Density Fiberboard
(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, 18­ply-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.

DESCRIPTIVE DATA

LF Subsystem & Loading 1x 15-in, vented
MF Subsystem & Loading 1x 10-in, horn loaded
HF Subsystem & Loading 1x 1.4-in exit compression driver

on CD horn

Number of Audio Bands 3-way

Powering Mode Triamp

Recommended Crossover EAW CX300-CB423M or

THX® Specified Unit

Cabinet Type (shape) Rectangular

Enclosure Materials LF-3/4-in MDF; 15mm

Birch plywood baffle — MF/HF-MDF

Finish Textured Black

Connectors 2x 2-Termimal Barrier Strips (LF and MF)

plus 2x Bind Posts (HF)

NOMINAL DATA

Frequency Response (1 Watt @ 1m)

±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 137.0

LF Long Term 125.0
MF Long Term 133.1
HF Long Term 131.0

Nominal Coverage Angle/-6 dB points (degrees)

Horizontal 90

Vertical 45

Dimensions & Weights Inches Centimeters

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

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# CB423M-888165 (A)/3/1/00 • Printed In USA