EAW CH491 User manual

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# CH491 999096 (A)/2p/3/14/97 • Printed In USA
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
TECHNICAL SPECIFICATIONS CH491
DESCRIPTION
A 2-way mid/high system (passive crossover) housed in a
trapezoidal enclosure. Includes a horn-loaded 10-in midrange
cone and a 1-in exit compression driver on a 90 x 45 con-
stant directivity horn.
APPLICATIONS
The CH491 compact Virtual Array mid/high module works
with BH or BV Series LF systems to create true 3-way arrays
in permanent installations. 3-way design dramatically im-
proves the quality of vocal reproduction while the cone-driven
midrange horn extends pattern control into the lower oc-
taves. Also effective as a stand-alone, voice-only system.
Comprehensive 3/8"-16 mounting/suspension points. Six year
warranty.
Applications include:
Stadiums
Arenas
Convention Centers
Large HOW’s
Small HOW’s
Major Malls
DESCRIPTIVE DATA
Part Number 999096
Product Group I
MF Subsystem & Loading 1x 10-in Horn-Loaded Cone
HF Subsystem & Loading 1x 1-in Exit Compression Driver on
Constant Directivity Horn
System Configuration 2-way, mid/high
Powering Configuration(s) Passive MF/HF Crossover
Recommended High-Pass
Frequency (24 dB/Octave) 125Hz
Cabinet Type (shape) Trapezoidal
Enclosure Materials Baltic Birch Plywood
Finish Black Catalyzed Polyurethane
Connectors 4-pin Barrier Strip & 1x Neutrik
NL4 Speakon
Suspension Hardware (20) 3/8”-16 Threaded Mounting/
Suspension Points (5 each Top and
Bottom, 4 per Side, 2 on rear)
Grill Vinyl Coated Perforated Steel
NOMINAL DATA
Frequency Response (Hz)
±3 db 200Hz to 15kHz
-10 dB 125Hz
Axial Sensitivity (dB SPL/1 Watt/1m)
105
Impedance (Ohms)
8
Power Handling (Watts)
AES Standard 300
Calculated Maximum Output (dB SPL, @ 1m)
Peak 135.8
Long term 129.8
Nominal Coverage Angle / -6 dB points (degrees)
Horizontal 90
Vertical 45
Dimensions inches millimeters
Height 22.5 572
Width 24.63 626
Depth 19.75 502
Trapezoid Angle 16.5 degrees per side
Weights pounds kilograms
Net Weight 100 45.5
Shipping Weight 110 50.1

Acoustic Performance Partnership Eastern Acoustic Works CH491
One Main Street, Whitinsville MA, 01588 USA • Phone [phone] • Toll Free 800/992-5013 • Fax [phone] • Web http://www.eaw.com • email [e-mail]
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
TECHNICAL SPECIFICATIONS CH491
DIMENSIONAL DRAWINGS
DIMENSIONAL DRAWING SERVICE ITEMS
MF: Complete Cone Driver
EAW Part No. 804021
HF: Complete Compression Driver/Tweeter
EAW Part No. 803006
Filter/Crossover Network: Complete Assembly
EAW Part No. 225060
ARCHITECTURAL SPECIFICATIONS
The passive mid/high loudspeaker systems shall incorporate
a 10-in MF transducer and 1-in exit compression driver HF
transducer.
The MF driver shall be loaded into a constant horizontal cov-
erage horn constructed of 3mm birch plywood reinforced with
high density polyurethane foam. The MF horn shall incorpo-
rate a phase/displacement plug. The HF driver shall be loaded
on a constant directivity horn with a nominal coverage pat-
tern of 90°(h) x 45°(v). An internal passive filter network
shall provide fourth order acoustical crossover and system
equalization.
System frequency response shall vary no more than ±3 dB
from 200 Hz to 15 kHz measured on axis. The loudspeaker
shall produce a Sound Pressure Level (SPL) of 105 dB SPL on
axis at 1 meter with a power input of 1 Watt, and shall be
capable of producing a peak output of 135.8 SPL on axis at
1 meter. The loudspeaker shall handle 300 Watts of amplifier
power (AES Standard) and shall have a nominal impedance
of 8 Ohms.
The loudspeaker enclosure shall be trapezoidal in shape. It
shall be constructed of 15mm thickness void-free cross-grain-
laminated Baltic birch plywood and shall employ extensive
internal bracing. It shall be finished in black catalyzed poly-
urethane. Input connectors shall be 4-terminal barrier strip
and 1x Neutrik NL4 Speakon. A total of twenty 3/8"-16
threaded mounting/suspension points (5 each on top and
bottom, 4 per side, 2 on rear) shall be provided. The front of
the loudspeaker shall be covered with a vinyl coated perfo-
rated steel grill.
The mid/high loudspeaker shall be the EAW model CH491.
10.50
2.00
2.00 6.00
3.50
12.75 13.83
3.57
BACK
18.50
3.83 TYP
9.00
2.68 TYP
22.50
19.75
2.50
10.45
12.75
18.41
24.63
2.68 TYP 2.50
1.88 TYP
20.62
13.83 TYP
TOP
A
A
33°
13.24 REF
VIEW A-A
5.75
12.00
SIDE
FRONT
BOTTOM
MOUNTING POINT, 3/8"-16 THREADED HOLE.
DIMENSIONS LABELED "NOM" ARE +0 / -1/16"
4.56 REF
CH491
ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED.
510219
exp 2/16/97 shb
CENTER OF GRAVITY.