EAW MQH1344e User manual

Frequency Response ±3 dB 75 Hz to 15 kHz
-10 dB 43 Hz
Axial Sensitivity (dB SPL, 1 Watt @ 1m)
LowerLF 92
Upper LF 94
MF 111
HF 111
Impedance (Ohms) Lower LF 8
Upper LF 8
MF 8
HF 8
Power Handling, AES Standard (Watts)
Lower LF 600
Upper LF 600
MF 400
HF 150
Calculated Maximum Output (dB SPL @ 1m)
Lower LF Peak 126.0
Upper LF Peak 128.0
MF Peak 143.0
HF Peak 139.0
Lower LF Long Term 120.0
Upper LF Long Term 122.0
MF Long Term 137.0
HF Long Term 133.0
Nominal Coverage Angle, -6 dB Points (degrees)
Horizontal 40
Vertical 40
Recommended High-Pass Frequency
24 dB/Octave 45 Hz
• Full-range, 3-way system
• 2x slot-loaded 15-in LF; horn-loaded 10-in MF; 2-in
Neodymium HF
• LF woofers spaced for directional control to below 200 Hz
• Asymmetrical (down-angled) 40° x 40° beamwidth
A 3-way, quad-amplified full-range system in a vented trape-
zoidal enclosure. Includes dual, slot-loaded 15-in woofers, a
horn-loaded 10-in MF cone with Radial Phase Plug™, and a 2-
in exit/3-in diaphragm Neodymium compression driver. The
MF and HF horns provide an asymmetrical 40° x 40°
beamwidth. The enclosure is vertically configured for array-
ing in horizontal rows, and features a comprehensive system
of 3/8”-16 threaded suspension points.
The MQH1344e represents a highly specialized approach
developed to solve difficulties in larger venues. It provides
unique, down-angled coverage by using specially designed
asymmetrical MF and HF horns. Dual 15-in woofers are sepa-
rated at an optimal distance to provide significant off-axis
attenuation to below 200 Hz. To avoid problematic lobing in
the upper LF range, discrete signal processing reduces the
input to one LF driver while allowing the other to continue to
work up into the lower midrange. This more evenly matches
the MF horns beamwidth while assisting in maintaining pat-
tern control through the entire crossover region. The
MQH1344e requires four separate amplifier channels (quad-
amplification) and digital signal processing in order to
achieve the pattern control described.
Application Usage: Install
Houses of Worship Auditoriums Theatres
Performing Arts Centers Arenas Stadiums
SPECIFICATIONS MQH1344e
FEATURES
DESCRIPTION
PERFORMANCE
One Main Street, Whitinsville, MA 01588 508 234 6158 Toll Free 800 992 5013 FAX [phone] [e-mail] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. MQH1344e/0002684/2 pp April 2002 Printed in USA
APPLICATION
PHYSICAL LF Subsystem 2x 15-in cones, vented
MF Subsystem 10-in horn loaded cone, Radial
Phase Plug™
HF Subsystem 1x 2-in exit/3-in diaphragm
compression driver on a constant
directivity horn
Configuration 3-way, full-range
Powering Quad-amplified
Enclosure Material Exterior grade Baltic birch plywood
Finish Wear-resistant textured black paint
Connectors Terminal barrier strip
Suspension Hardware 16x 3/8”-16 threaded mounting
points (4 each on top, bottom
and sides)
Grille Powder coated perforated steel
Dimensions inches millimeters
Height (front) 54.0 1372
Height (rear) 28.0 711
Width 8.4 213
Depth 27.0 686
Trapezoid Angle 20 degrees per side
Weights pounds kilograms
Net Weight 225 102.3
Shipping Weight 253 115.0

SPECIFICATIONS MQH1344e
DIMENSIONAL DRAWING A & E SPECIFICATIONS
One Main Street, Whitinsville, MA 01588 508 234 6158 Toll Free 800 992 5013 FAX [phone] [e-mail] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. MQH1344e/0002684/2 pp April 2002 Printed in USA
The 3-way full-range loudspeaker shall incorporate 2x 15-in
slot-loaded woofers, a 10-in MF cone with Radial Phase
Plug™, and a 2-in exit/3-in diaphragm HF compression driver.
The MF and HF devices shall be loaded on asymmetrical, down-
angled horns with a 40°x 40°beamwidth. The LF woofers
shall be optimally spaced to provide significant off-axis atten-
uation to below 200 Hz.
System frequency response shall vary no more than 63 dB from
75 Hz to 15 kHz measured on axis. The lower LF section shall
produce a sound pressure level of 92 dB SPL on axis at 1 meter
with a power input of 1 watt, and shall be capable of produc-
ing a peak output of 126 dB SPL on axis at 1 meter. The upper
LF section shall produce a sound pressure level of 94 dB SPL
on axis at 1 meter with a power input of 1 watt, and shall be
capable of producing a peak output of 128 dB SPL on axis at
1 meter. The MF section shall produce a sound pressure level
of 111 dB SPL on axis at 1 meter with a power input of 1 watt,
and shall be capable of producing a peak output of 143 dB SPL
on axis at 1 meter. The HF section shall produce a sound pres-
sure level of 111 dB SPL on axis at 1 meter with a power input
of 1 watt, and shall be capable of producing a peak output of
139 dB SPL on axis at 1 meter. Both LF sections shall handle
600 watts of amplifier power (AES Standard) and shall have a
nominal impedance of 8 ohms. The MF section shall handle
400 watts of amplifier power (AES Standard) and shall have a
nominal impedance of 8 ohms. The HF section shall handle
150 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 exterior grade Baltic birch plywood and
shall employ extensive internal bracing. It shall be finished in
wear-resistant textured black paint. Input connectors shall be
a terminal strip. A total of 16x 3/8”-16 threaded
mounting/suspension points (4 each top, bottom, and sides)
shall be provided. The front of the loudspeaker shall be cov-
ered with a powder coated perforated steel grille.
The 3-way full-range loudspeaker shall be the EAW model
MQH1344e.
Manufacturing tolerances are +/- 0.13 and +/- 1°
C
L
29.94
L
C
A
C
L
BACK
C
L
TOP
FRONT
L
C
VIEW A-A
(1.95) 15.96
4.93
(2.53) 4.00
28.00
DIMENSIONS APPLY
TO TOP AND BOTTOM
15.00
10.25
BOTTOM
(8.35)
40°
27.00
4.00
21.17
MQH1344e
DIMENSIONS APPLY
TO BOTH SIDES
NOTES:
1. SYMBOL INDICATES MOUNTING POINT,
3/8-16 THREADED HOLE (PI ANGLE).
2. SYMBOL INDICATES NON LOAD BEARING
MOUNTING POINT, 3/8-16 THREADED HOLE
(PI ANGLE).
3. SYMBOL INDICATES CENTER OF BALANCE.
4. WEIGHT APPROX. 225 LBS.
5. SHIPPING WEIGHT APPROX. 253 LBS.
48.94
50.10
5.00
INPUT
26.75
A
ACCESS PANEL
25.16
11.75
GRILLE PARTIALLY SHOWN
ACCESS PANEL
ACCESS PANEL
54.00