Toa LE-M124 User manual

TOA SPEAKER SYSTEM
CONSTANT DIRECTIVITY HORN
LE-M124/LE-M94/LE-M64/LE-M42
DESCRIPTION
The LE Series constant directivity horns employ original
TOA technology to meet stringent professional standards
that always call for precise directivity control, high
efficiency and excellent sound quality. They are ideally
suited for such applications as theaters, concert halls,
auditoriums, movie houses and churches.
The TOA LE Series constant directivity horns employ
different formulas to optimize the horizontal and vertical
side wall contours. Also, both side walls are so arranged
as to allow the mouth to most closely approach an
equiphase surface. These factors combine to make the
horns geometry ideal for maintaining uniform directivity
over the rated frequency range.
Each horn has a crossover point of 500Hz and above
when used as part of an HFD-260 system, or 800Hz and
higher with the HFD-220 system. Frequency response is
uniform over the full frequency range from 800Hz to 16kHz
at any point (2kHz to 20kHz vertically) within the rated
coverage angle.The horns have a horizontal by vertical
controlled coverage angle of: LE-M124: 120 x 40 degrees;
LE-M94: 90 x 40 degrees; LE-M64: 60 x 40 degrees, and
LE-M42: 40 x 20 degrees.
Each LE Series horn comes with a 2 in. (49mm) throat
diameter for mating with a TOA HFD-280-8/16 or HFD-
220-8/16 high-frequency compression driver. Horn
construction is of solid polyurethane of sufficient thickness
to suppress resonance.
FEATURES
1. Original TOA horn design ensures precise directivity
and high sound quality.
2. Excellent horizontal and vertical dispersion control
over a frequency range of 800Hz to 16kHz.
3. High efficiency and smooth frequency response.
4. 2 in. (49mm) throat diameter.
5. Resonance-free rigid construction.
6. Matching support bracket attached.

LE-M124
APPEARANCE AND DIMENSIONAL DIAGRAM
CHARACTERISTIC DIAGRAMS
l Coverage Angle vs Frequency (-6dB) l Directivity Factor vs Frequency (Q)
500Hz 1kHz 2kHz
l Polar Response (1/3 Octave Pink Noise)
 Horizontal ----- Vertical
4kHz
6kHz 16kHz

LE-M42
APPEARANCE AND DIMENSIONAL DIAGRAM
CHARACTERISTIC DIAGRAMS
Coverage Angle vs Frequency (-6dB) Directivity Factor vs Frequency (Q)
Polar Response (1/3 Octave Pink Noise)
 Horizontal
500Hz
---- Vertical
1kHz
2kHz
4kHz 8kHz
16kHz

LE-M64
APPEARANCE AND DIMENSIONAL DIAGRAM
CHARACTERISTIC DIAGRAMS
 Coverage Angle vs Frequency (-6dB)
 Directivity Factor vs Frequency (Q)
 Polar Response (1/3 Octave Pink Noise)
  Horizontal -----Vertical
500Hz
4kHz
1kHz
8kHz
2kHz
16kHz

LE-M94
APPEARANCE AND DIMENSIONAL DIAGRAM
CHARACTERISTIC DIAGRAMS
 Coverage Angle vs Frequency (-6dB)
 Directivity Factor vs Frequency (Q)
 Polar Response (1/3 Octave Pink Noise)
  Horizontal -----
Vertical
500Hz 1kHz 2kHz
4kHz 8kHz
16kHz

SPECIFICATIONS
Model No.
Coverage Angle
Horizontal (-6dB)
Vertical (-6dB)
Crossover Frequency
Throat Diameter
Applicable Drivers
Construction
Dimensions
Mouth Height
Mouth Width
Length
Weight
LE-M124 LE-M94
120° (+23°, -13°)
(400Hz to 20kHz)
40° (+17°, -10°)
(2kHz to 20kHz)
500Hz or more
(HFD-260-8/16 is
used.)
800Hz or more
(HFD-220-8/16 is
used.)
2" (49mm)
HFD-260-8/16
HFD-220-8/16
90° (+13°, -6°)
(500Hz to 16kHz)
40°(+16°,-7°)
(2kHz to 20kHz)
500Hz or more
(HFD-260-8/16 is
used.)
800Hz or more
(HFD-220-8/16 is
used.)
2" (49mm)
HFD-260-8/16
HFD-220-8/16
Solid polyurethane Solid polyurethane
13.39" (340mm) 13.39" (340mm)
20.08" (510mm) 20.08" (510mm)
10.75" (273mm)
10.75" (273mm)
13.2 Ibs. (6kg) 11.0 Ibs. (5kg)
EQUALIZATION
When using the LE Series constant directivity horn in combination with
the HFD-260-8/16 and HFD-220-8/16 drivers and the TOA SAORI
integrated sound processor, set the long delay type horn equalizer
(IS-110DL4, IS-110DL2) built into the digital channel divider module of
the SAORIas shown in the table below.
LE-M124 LE-M94 LE-M64 LE-M42
HFD-260-8/16 TYPE 3 TYPE 2 TYPE 2 TYPE 5
HFD-220-8/16 TYPE 8TYPE 8 TYPE 8 TYPE 9
Model No.
LE-M64 LE-M42
Coverage Angle
Horizontal (-6dB)
60° (+17°, -8°) 40°
(+12°, -2°)
(800Hz to 20kHz) (800Hz to 20kHz)
Vertical (-6dB)
40° (+16°, -7°) 20°
(+15°, -7°)
(1.6kHz to 20kHz) (2kHz to 20kHz)
Crossover Frequency 500Hz or more 500Hz or more
(HFD-260-8/16 is (HFD-260-8/16 is
used.) used.)
800Hz or more 800Hz or more
(HFD-220-8/16 is (HFD-220-8/16 is
used.) used.)
Throat Diameter 2 (49mm) 2(49mm)
Applicable Drivers
HFD-260-8/16 HFD-260-8/16
HFD-220-8/16 HFD-220-8/16
Construction Solid polyurethane Solid polyurethane
Dimensions
Mouth Height
16.54(420mm) 16.54(420mm)
Mouth Width 20.08" (510mm) 24.80" (630mm)
Length
13.98(355mm) 28.03(712mm)
Weight 13.2 Ibs. (6kg) 19.8 Ibs. (9kg)
*Specifications are subject to change without notice.
ARCHITECTS AND ENGINEERS
SPECIFICATIONS
The constant directivity horn shall be a TOA LE Series LE-M124,
LE-M94, LE-M64, LE-M42 or equivalent. Construction shall be of solid
polyurethane and throat diameter shall be 2 in. (49mm). Dimensions
(mouth height, mouth width and speaker length) and weight shall be:
LE-M124: 13.39 x 20.08 x 10.75 in. (340 x 510 x 273mm)at 13.2 Ibs.
(6kg); LE-M94: 13.39 x 20.08 x 10.75 in. (340 x 510 x 273mm) at 11.0
Ibs. (5kg); LE-M64: 16.54 x 20.08 x 13.98 in. (420 x 510 x 355mm) at
13.2 Ibs. (6kg); and LE-M42: 16.54 x 24.80 x 28.03 in. (420 x 630 x
712mm) at 19.8 Ibs. (9kg). Applicable drivers shall be the TOA
HFD-260-8/16 and HFD-220-8/16.Each horn shall have a crossover
point of 500Hz and above when used as part of an HFD-260 system, or
800Hz and higher with the HFD-220 system. Frequency response shall
be uniform over the full frequency range from 800Hz to 16kHz at any
point (2kHz to 20kHz vertically) within the rated coverage angle.
The horns shall have a horizontal by vertical controlled coverage angle
at -6dB of: LE-M124: 120 x 40 degrees; LE-M94: 90 x 40 degrees;
LE-M64: 60 x 40 degrees, and LE-M42: 40 x 20 degrees.
TOA Corporation
Printed in Japan 833-64-817-40