Toa SR-EP3 User Manual
OPERATING INSTRUCTIONS
LINE ARRAY SPEAKERS
EXTENSION PLATE (optional)
SR-H2L
SR-H2S
SR-H3L
SR-H3S
SR-EP3
SR-H3L
(Long and Linear type)
SR-H3S
(Long and Curved type)
SR-H2L
(Short and Linear type)
SR-H2S
(Short and Curved type)
Thank you for purchasing TOA's Line Array Speakers and their associated products.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.
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TABLE OF CONTENTS
1. SAFETY PRECAUTIONS ......................................................................................... 3
2. GENERAL DESCRIPTION ....................................................................................... 5
3. FEATURES ................................................................................................................... 5
4. ABOUT COVERAGE AREA .................................................................................... 6
5. DIMENSIONAL DIAGRAMS
5.1. Line Array Speaker SR-H2L (Short and Linear type) ................................................. 7
5.2. Line Array Speaker SR-H2S (Short and Curved type) ............................................... 7
5.3. Extension Plate SR-EP3 (optional) ............................................................................ 7
5.4. Line Array Speaker SR-H3L (Long and Linear type) .................................................. 8
5.5. Line Array Speaker SR-H3S (Long and Curved type) ................................................ 8
6. INTERNAL WIRING DIAGRAM
6.1. Line Array Speaker SR-H2L and SR-H2S .................................................................. 9
6.2. Line Array Speaker SR-H3L and SR-H3S .................................................................. 9
7. INPUT TERMINAL CONNECTION ...................................................................... 10
8. CHANGING TO HIGH IMPEDANCE ................................................................... 11
9. JOINING SPEAKERS .............................................................................................. 12
10. INSTALLATION EXAMPLES USING THE OPTIONAL BRACKETS ....... 13
11. DIGITAL PROCESSOR FILTERING
11.1. When using the SR-H2L ......................................................................................... 14
11.2. When using the SR-H2S ........................................................................................ 14
11.3. When using the SR-H3L or Linked Speakers ......................................................... 14
11.4. When using the SR-H3S ........................................................................................ 14
12. SPECIFICATIONS
12.1. Line Array Speaker SR-H2L and SR-H2S .............................................................. 15
12.2. Line Array Speaker SR-H3L and SR-H3S .............................................................. 15
12.3. Extension Plate SR-EP3 (optional) ........................................................................ 16
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When Installing the Unit
• Install the unit only in a location that can structurally support the weight of the unit and the mounting bracket.
Doing otherwise may result in the unit falling down and causing personal injury and/or property damage.
• Since the unit is designed for in-door use, do not install it outdoors. If installed outdoors, the aging of parts
causes the unit to fall off, resulting in personal injury. Also, when it gets wet with rain, there is a danger of
electric shock.
• Do not use other methods than specified to mount the bracket. Extreme force is applied to the unit and the
unit could fall off, possibly resulting in personal injuries.
• Use nuts and bolts that are appropriate for the ceiling's or wall's material and structure. Failure to do so may
cause the speaker to fall, resulting in material damage and possible personal injury.
• Tighten each nut and bolt securely. Ensure that the bracket has no loose joints after installation to prevent
accidents that could result in personal injury.
• Use the specified mounting bracket in combination. Doing otherwise may cause the unit or component to fall
off, resulting in personal injury.
• Do not mount the unit in locations exposed to constant vibration. The mounting bracket can be damaged by
excessive vibration, potentially causing the unit to fall, which could result in personal injury.
• (Applicable when mounting the speaker on a speaker stand)
Avoid installing or mounting the unit in unstable locations, such as on a rickety table or a slanted surface.
Doing so may result in the unit falling down and causing personal injury and/or property damage.
• (Applicable when suspending the speaker)
Refer all installation work to the qualified professionals. Installation for flying requires extensive technical
knowledge and experience. The speaker may fall off if incorrectly installed, resulting in possible personal
injury.
• Flying Precautions (applicable when suspending the speaker)
Be sure to follow the instructions below. Otherwise, the suspension wires or belts may be off or snap and
the speaker may fall off, causing personal injury.
· Check to confirm that the suspension wires and belts are strong enough to withstand the speaker load.
· The connectors of the suspension wires and belts must be securely linked with those of the speaker.
· All parts and components (such as enclosures, metal pieces, and screws) must be free from any
deformation, crack, and corrosion.
· Be sure to use screws supplied with the optional flying hardware when installing the speaker using such
hardware.
1. SAFETY PRECAUTIONS
• Before installation or use, be sure to carefully read all the instructions in this section for correct and safe
operation.
• Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or
cautions regarding safety.
• After reading, keep this manual handy for future reference.
Safety Symbol and Message Conventions
Safety symbols and messages described below are used in this manual to prevent bodily injury and property
damage which could result from mishandling. Before operating your product, read this manual first and
understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.
Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.
WARNING
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When Installing the Unit
• Avoid touching the unit's sharp metal edge to prevent injury.
• Do not use anti-rust lubricant. If the unit contains resin parts, they could deteriorate and cause the parts to
fall, possibly resulting in personal injury.
• (Applicable when mounting the speaker on a speaker stand)
Avoid placing the unit in a doorway or other high traffic area as people may trip on the equipment and cords,
or be injured by falling objects.
When the Unit is in Use
• Do not operate the unit for an extended period of time with the sound distorting. Doing so may cause the
connected speakers to heat, resulting in a fire.
• Do not stand or sit on, nor hang down from the unit as this may cause it to fall down or drop, resulting in
personal injury and/or property damage.
• Have the unit checked periodically by the shop from where it was purchased. Failure to do so may result in
corrosion or damage to the unit or its mounting bracket that could cause the unit to fall, possibly causing
personal injury.
Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.
CAUTION
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2. GENERAL DESCRIPTION
The line array speaker features slim 84 mm (3.3")-wide construction incorporating high-quality 7 cm (2.8") fullrange speaker units. The internal speaker units are vertically arrayed in close proximity to form an extended
sound source line, minimizing distance attenuation and realizing a uniform sound pressure coverage area.
The line array speaker lineup includes the following four models:
• SR-H2L (Short and Linear type)
• SR-H2S (Short and Curved type)
• SR-H3L (Long and Linear type)
• SR-H3S (Long and Curved type)
The linear version provides excellent sound transmission distance. The curved version provides a 20° vertical
directional angle that is designed for relatively short range coverage. The most appropriate model can be
selected to match installation location and application.
3. FEATURES
• The short type (SR-H2L and SR-H2S) is constructed of 9 speaker units, while the long type (SR-H3L and
SR-H3S) is constructed of 16 speaker units.
• Each speaker employs high-quality, heavy-duty 7cm (2.8") full-range drivers offering superb coverage in
high frequencies.
• Unique front grille construction effectively widens the full-range drivers high frequency horizontal directivity.
• Since the linear sound source effect prevents acoustical energy from attenuating even at longer distances,
the line array speaker provides advantages compared with normal types of speakers in its ability to project
sound long distances. This realizes less difference in sound volume between areas close and far from the
speaker, for a more uniform sound field.
• Since the speaker's vertical sound dispersion is focused, sound is only directed at the target area.
The line array speaker (when correctly positioned) is not influenced by sound reflection from ceiling or floor
surfaces, and can provide clear sounds even in spaces affected by long reverberation times or other poor
acoustic conditions.
• Since the attenuation of sound pressure is small even far away from the speaker, the volume is not
excessively loud in the area near the speaker. This helps suppress feedback (improving microphone
amplification gain).
• Two linear types can be linked to improve sound transmission distance and widen the vertical coverage
area.
• The use of optional mounting brackets permits the speaker to be installed in the most appropriate location
for its intended use.
· When mounting flat against a wall: SR-WB3 Wall Mounting Bracket
· When mounting on a wall at some horizontal and vertical angles: SR-TB3 Wall Tilt Bracket
· When suspending from a ceiling: SR-FB3 Flying Bracket
· When mounting on a speaker stand: SR-SA3 Stand Adapter and ST-33B Speaker Stand
Note: For installation instructions, refer to the instruction manuals enclosed with each mounting bracket.
• The speakers can be used for high-impedance applications with the installation of the optional MT-S0301
Matching Transformer (Rated input: 30 W).
• Removable input connector facilitates connection and wiring
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