EAW MQTD412 2D User manual

Frequency Response (1 Watt @ 1m)
±3 dB 58 Hz to 500 Hz
-10 dB 48 Hz
Axial Sensitivity (dB SPL, 1 Watt @ 1m)
12-in 101
8-in 101
Impedance (Ohms) 12-in 2x 8
8-in 2x 12
Power Handling, AES Standard (Watts)
12-in 1000
8-in 400
Calculated Maximum Output (dB SPL)
12-in Peak 137.0
8-in Peak 133.0
12-in Long Term 131.0
8-in Long Term 127.0
90 Degreee Off -Axis Rejection
Vertical 10-12dB Attenuation 160-
500 Hz
A unique 2 way bass system employing Tuned Dipolar Array
Technology. Includes 2x 12" Woofers (vented) and 2x 8"
woofers (sealed) in a trapezoidal enclosure.
The MQTD412 uses patented Tuned Dipolar Array (TDA)
Technology to achieve unprecedented LF directivity in the
vertical plane without enormous horns or baffles. The com-
pact, high output LF system works with MQ Series mid/high
modules to create true 3-way arrays in large format installa-
tions. A powerful tool where LF directivity is required. Six year
warranty.
Applications include:
Stadiums Arenas
Dance Clubs Large Theaters
Large Houses of Worship
SPECIFICATIONS MQTD412
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. MQTD412/888173 Rev(1)/2 pp 7/25/00 Printed in USA
APPLICATION
PHYSICAL
LF Subsystem 2x 12-in, vented
2x 8-in, sealed
Configuration Dedicated LF tuned dipolar array
Powering Mode Bi-amplified
Cabinet Type (shape) Trapezoidal
Enclosure Materials Baltic birch plywood
Finish Wear-resistant textured black paint
Connectors 2x 4-Terminal barrier strip
Suspension Hardware (16) 3/8”-16 threaded mounting
points (4 each top, bottom, and
sides )
Grille Powder coated perforated steel
Dimensions inches millimeters
Height 40.00 1016
Width (front) 24.0 610
Width (rear) 12.75 324
Depth 21.0 533
Trapezoid Angle 15°
Weights pounds kilograms
Net Weight 150 68.0
Shipping Weight 162 73.5

SPECIFICATIONS MQTD412
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. MQTD412/888173 Rev(1)/2 pp 7/25/00 Printed in USA
The low frequency loudspeaker systems shall incorporate 2x
12-in plus 2x 8-in LF transducers. Each driver pair shall be
spaced so as to create a tuned dipolar array. The driver pairs
shall require an active crossover at 250 Hz, 24 dB/octave. The
system shall provide 10-12 dB attenuation 90°off axis (v)
from 160 Hz to 500 Hz.
System frequency response shall vary no more than ±3 dB from
58 Hz to 500 Hz measured on axis. The 12-in driver pair shall
produce a Sound Pressure Level (SPL) of 101 dB SPL on axis
at 1 meter with a power input of 1 Watt, and shall be capable
of producing a peak output of 137 SPL on axis at 1 meter. The
12-in driver pair shall handle 1000 Watts of amplifier power
(AES Standard) and shall have a nominal impedance of 2x 8
Ohms.
The 8-in driver pair shall produce a Sound Pressure Level (SPL)
of 101 dB SPL on axis at 1 meter with a power input of 1 Watt,
and shall be capable of producing a peak output of 133 SPL
on axis at 1 meter. The 8-in driver pair shall handle 400 Watts
of amplifier power (AES Standard) and shall have a nominal
impedance of 2x 12 Ohms.
The loudspeaker enclosure shall be trapezoidal in shape. 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 wear-resistant textured
black paint. Input connectors shall be dual four-terminal bar-
rier strips. A total of sixteen 3/8"-16 Threaded Mounting
Points (4 each top, bottom, and sides) shall be provided. The
front of the loudspeaker shall be covered with a powder coat-
ed perforated steel grille.
The low frequency loudspeaker shall be the EAW model
MQTD412.
Manufacturing tolerances are +/- 0.13 and +/- 1°
TOP/BOTTOM
FRONT
SIDES
BACK
509001 (A)
exp 3/29/00 dpm
MQTD412
DIMENSIONS APPLY
TOTOP & BOTTOM
10.34 C
L
(12.75)
5.68
9.31
21.00
30°
17.15
ACCESS PANEL
L
C
10.69
5.62
7.38
INPUT
6.37
1.95
36.10
13.15
24.00
GRILLE PARTIALLY SHOWN
40.00
INDICATES MOUNTING POINT,
3/8-16 THREADED HOLE (PI ANGLE).
INDICATES CENTER OF BALANCE.