EAW LS432 User manual

Acoustic Performance Partnership Eastern Acoustic Works LS432
One Main Street, Whitinsville MA, 01588 USA • Phone [phone] • Toll Free 800/992-5013 • Fax [phone] • Web http://www.eaw.com • email [e-mail]
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SPECIFICATIONS LS432
EASTERN ACOUSTIC WORKS
One Main Street, Whitinsville, MA 01588 • (508) 234 - 6158 • FAX (508) 234 - 8251 • Email [email protected] • Web http://www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. • PUB# LS432-888138 (B)/2 pp/5/1/00 • Printed In USA
FEATURES
• High performance Column Array(tm) system
• 4x 4-in LF/3x 1-in tweeters
• Line array effects create consistent 20°x 140°
coverage
• For permanent installation only
DESCRIPTION
EAW’s LS432 line source loudspeaker system brings the clas-
sic column speaker up-to-date. Sophisticated frequency shad-
ing and all-pass filtering integrates the 4x 4-in woofers and
3x 1-in soft dome tweeters, maximizing the benefits of line
source coupling while eliminating grading lobes.
The system maintains a well behaved nominal vertical cov-
erage pattern of 20°to below 1000 Hz. Even at 500 Hz, the
vertical pattern is still 80°. With the enclosure baffle defin-
ing a gentle arc, the drivers form a curved line source to help
prevent the vertical pattern from collapsing in the crossover
region.
At the same time, the drivers act as direct radiators in the
horizontal plane, giving the system an extra-wide 140°hori-
zontal coverage pattern with response that meets profes-
sional standards for fidelity and intelligibility.
The internal passive crossover/filter network uses complex,
asymmetrical slopes to integrate the subsystems and goes
beyond merely dividing the signal to perform critical equal-
ization functions.
APPLICATION
Like the classic column speakers of the ‘50s and 60’s, the
LS432 was designed to solve speech-only installation prob-
lems in highly reverberant spaces with low ceilings and hard
floors. These might include small houses of worship, librar-
ies or other civic spaces, and transportation hubs.
The 26-in tall, 6.25-in wide enclosure fits nicely on archi-
tectural columns and can be custom painted to blend in
with any decor. The enclosure includes a comprehensive sys-
tem of 1/4”-20 threaded mounting points for easy installa-
tion. The LS432 is available as the LS432-SLT with a 15°
downward angle to the front baffle, letting the system be
mounted near a higher ceiling without sacrificing coverage.
DESCRIPTIVE DATA
Configuration 2-way, full range
Powering Passive (LF/HF crossover)
LF Subsystem 4x 4-in woofer
HF Subsystem 3x1-in soft dometweeter
Coverage Angles (h°x v°) 140 x 20
Cabinet Type (shape) Rectangular
Enclosure Materials Baltic birch plywood
Finish Black polyurethane
Connectors 2-terminal barrier strip
Suspension Hardware (8) 1/4"-20 threaded mounting
points (1 each top, bottom, and
sides; 4 back)
Grille Vinyl coated perforated steel
Options FC142 forged shoulder eyebolt
Dimensions Inches Millimeters
Height 26.00 660
Width 6.25 159
Depth (max) 6.00 152
Depth (top) 5.75 146
Depth (bottom) 5.75 146
Weights Pounds Kilograms
Net Weight 20 9.1
Shipping Weight 23 10.5
PERFORMANCE
Frequency Response (1 Watt @ 1m)
±3 dB 200 Hz to 20 kHz
-10 dB 100 Hz
Axial Sensitivity (dB SPL, 1 Watt @ 1m)
Full Range 95
Impedance (Ohms)
Full Range 8
Power Handling, AES Standard (Watts)
Full Range 150
Calculated Maximum Output (dB SPL @ 1m)
Full Range Peak 122.8
Full Range Longterm 116.8

Acoustic Performance Partnership Eastern Acoustic Works LS432
One Main Street, Whitinsville MA, 01588 USA • Phone [phone] • Toll Free 800/992-5013 • Fax [phone] • Web http://www.eaw.com • email [e-mail]
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SPECIFICATIONS LS432
DIMENSIONAL DRAWINGS
DIMENSIONAL DRAWING A & E SPECIFICATIONS
The two-way full range loudspeaker systems shall incorpo-
rate four 4-in LF transducers and three 1-in soft dome tweeter
HF transducer.
All seven drivers shall be mounted in a vertical column to
create a line source. The LF drivers shall be mounted two
each above and below the three HF drivers. An internal fre-
quency shading filter set shall maximize beneficial line source
coupling while minimizing grading lobes. An internal pas-
sive filter network shall provide fourth order acoustical cross-
over and system equalization between the low and high fre-
quency sections.
System frequency response shall vary no more than ±3 dB
from 200 Hz to 20 kHz measured on axis. The system shall
produce a Sound Pressure Level (SPL) of 95 dB SPL on axis at
1 meter with a power input of 1 Watt, and shall be capable
of producing a peak output of 122.8 dB SPL on axis at 1
meter. The system shall handle 150 Watts of amplifier power
(AES Standard) and shall have a nominal impedance of 8
Ohms.
The loudspeaker enclosure shall be rectangular in shape with
a convex arc to the front baffle. It shall be constructed of 1/
2-in thickness void-free cross-grain-laminated Baltic birch
plywood and shall employ extensive internal bracing. It shall
be finished in black catalyzed polyurethane. Input connec-
tors shall be two-terminal barrier strip. A total of 8x 1/4"-20
threaded mounting points (1 each top, bottom and sides, 4
back) shall be provided. The front of the loudspeaker shall
be covered with a vinyl coated perforated steel grille.
The 2-way full range loudspeaker shall be the EAW model
LS432.
L
C
L
C
4.25
1.59
BACK
2.00
L
C
2.63 6.03
13.67
6.25
FRONT
1.13
C
L
2.88
TOP/BOTTOM
3°
7.00
SIDES
2.00
INPUT
26.00
MOUNTING POINT 1/4 20 THREADED HOLE.
CENTER OF BALANCE.
510694 (1)
exp 8/24/98 shb
LS432
CABINET TO BE SYMMETRICAL ABOUT CENTERLINE DESIGNATIONS.