TOA F-1522SC User manual

TOA F-1522SC User manual
1. SAFETY PRECAUTIONS ........................... 2
2. GENERAL DESCRIPTION ......................... 3
3. FEATURES ................................................. 3
5. INSTALLATION .......................................... 4
FOR MAINTENANCE .................................. 6
7. REPAINTING THE SPEAKER .................... 7
8. SPECIFICATIONS ....................................... 8
Accessories ................................................. 8
Optional Component .................................... 8
Thank you for purchasing TOA’s Ceiling Speaker System.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.
• Be sure to read the instructions in this section carefully before use.
• Make sure to observe the instructions in this manual as the conventions of safety symbols and messages
regarded as very important precautions are included.
• We also recommend you keep this instruction 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.
Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.
• Leave the installation to your TOA dealer because
the installation requires expert knowledge.
Improper installation may cause the unit to fall,
resulting in personal injury and/or property
• Install the unit in a location that can structurally
support the weight of the unit and its mounting
hardware. Doing otherwise may result in the unit
falling down and causing personal injury and/or
property damage.
• Do not use other methods than specified to mount
the unit. Extreme force is applied to the unit and
the unit could fall off, possibly resulting in personal
• Tighten each screw securely. Ensure that the unit
has no loose joints after installation to prevent
accidents that could result in personal injury.
• Use the specified mounting hardware in
combination. Doing otherwise may cause the unit
or component to fall off, resulting in personal injury.
• Should the following irregularity be found during
use, immediately stop operating the unit and
contact your nearest TOA dealer. Further attempt
to use under this condition may cause fire or
electric shock.
· If you detect smoke or a strange smell coming
from the unit
· If no tone sounds
• Avoid installing the unit in humid or dusty locations,
in locations exposed to the direct sunlight, near the
heaters, or in locations generating sooty smoke or
steam as doing otherwise may result in fire or
electric shock.
• Do not operate the unit for an extended period of
time with the sound distorting. This is an indication
of a malfunction, which in turn can cause heat to
generate and result in a fire.
• Avoid touching the unit's sharp metal edge to
prevent injury.
The F-1522SC is a small, flush-mounted ceiling speaker that employs a full-range speaker element designed
to offer a wide frequency range and high-quality sound output. It can be mounted to the ceiling panel that is up
to 37 mm in thickness.
• A rear-open type speaker system employing a speaker element covering a wide frequency range.
• Wide-dispersion flush-mount ceiling speaker design employs unique acoustic construction to realize a wide
area of coverage. Uniform sound output levels are achievable not only directly under the speaker, but also
over a wide radius.
• Because the speaker is provided with both low- and high-impedance operating capability, it can be used in
many different applications. Front panel-mounted input selector switch permits easy verification and change
of current impedance settings, even after installation.
• Easy installation. Can be quickly and accurately mounted to ceilings.
• Rotating front grille can be installed quickly and conveniently.
• Attractive exterior design specially created by an interior designer blends naturally with any architectural
space, enhancing the immediate area's sense of harmony.
Dust cover
ø155 (6 7/64)
Unit: mm (inches)
11 (7/16)
Push-in terminal
Mounting hole: ø135 (5 5/16)
Max. 106 (4 11/64)
[Ceiling mounting]
117 (4 39/64)
Max. 37 (1 29/64)
Front grille (accessory)
Ceiling panel
A dust cover is pre-mounted on the rear of the speaker at the factory.
Pay attention not to accidentally take it off during speaker installation.
The F-1522SC ceiling speaker can be mounted in 2 different configurations:
• Direct mounting to a strong ceiling panel
No additional hardware required.
• Direct mounting to a weak ceiling panel
Use the optional HY-RR1 Reinforcement Ring.
Step 1. Cut a ø135 mm (5 5/16") hole in the ceiling.
Use the supplied paper pattern to position and trace
the hole.
ø135 5 mm (5 5/1613/64")
Ceiling panel
Step 2. Mount the optional Reinforcement Ring HY-RR1 to the ceiling. (Weak ceiling mounting)
Tip: Skip this step when the ceiling is strong (no additional hardware needed).
Use the cut-out section to insert the HY-RR1 into the ceiling as shown below.
HY-RR1 placed on
ceiling panel
Mounting hole
Cut-out section
HY-RR1 (optional)
Step 3. Connect the speaker cable to the push-in terminal.
Tip: Use the 600 V vinyl-insulated cable (IV or HIV wire).
The following matching cable types are recommended:
• Solid copper wire:
ø0.8 – ø1.6 mm (equivalent to AWG 20 – 15)
• Stranded copper wire: 0.75 – 1.25 mm2 (equivalent to AWG 18 – 17)
Press fully down on the corresponding terminal button and insert the cable.
To detach the cable, press fully down on the terminal button again,
then pull the cable.
[If not bridging]
[If bridging]
HOT (+)
COM (-)
HOT (+)
To the next
COM (-)
9 mm (23/64")
Step 4. Mount the speaker.
Before mounting, check to be sure that the speaker's
2 mounting tabs are turned inside the unit as shown
in the figure.
If turned outward, the speaker cannot be inserted
through the mounting hole.
Mounting tab
4-1. Insert the speaker through the mounting hole till
it contacts the ceiling panel. While doing so,
avoid directly touching the speaker's diaphragm.
Mounting hole
4-2. Rotate and tighten the mounting tab axis screws (2 places)
on the unit clockwise to their full stop in order to grip the
ceiling panel with the mounting tabs.
Mounting tab
Mounting tab axis screw
(2 places)
Use an electric screwdriver to tighten.
(Tightening torque: 6 – 10 kgf·cm)
Avoid this way.
Caution (when using the HY-RR1)
Mounting tab
Install the speaker so that its mounting tab does not
come to the cut-out section of the HY-RR1.
Ensure that the mounting tab presses the HY-RR1.
Cut-out section
Step 5. Set the input power.
Turn the input selector switch (on the unit's front) to set it to the desired input impedance using a slotted
Note: The switch is factory-preset to 1.7 kΩ.
Input selector switch
Speaker's front
Slotted screwdriver
Never set this switch to low impedance (8 Ω) when using a high impedance 25, 70, or 100 V line. Failure
to follow this instruction could result in damage to the speaker or amplifier.
Step 6. Attach the front grille.
Align the tabs (3 places) on the back side of the
grille with the corresponding notches in the unit,
then rotate the grille to full stop in the direction
indicated by the "LOCK" arrow.
The front grille employs a double-locking system
that clicks into place once partway through
rotation, but only locks into position at its point
of full rotation. Always be sure to rotate the grille
to its full stop.
Speaker unit
Notch (3 places)
Tab (3 places)
Front grille (accessory)
6.1. Detaching the Front Grille
Turn the front grille counterclockwise to full stop, then lightly
pull it downward.
The front grille employs a double-locking system.
If the grille cannot be detached when lightly pulled downward,
it likely has not yet been fully rotated back to the detachment
position. In such cases, take care to rotate the grill fully
counterclockwise in order to release the lock.
Front grille
Pull lightly.
6.2. Removing the Speaker
Rotate the 2 mounting tab axis screws counterclockwise. The mounting tabs rise as they turn, allowing the
speaker to be removed.
When loosening the mounting tab axis screws, support the speaker by hand to prevent it from falling.
Screw cap
Mounting tab
Mounting tab axis screw (2 places)
Use an electric screwdriver to detach.
Be sure to set the screwdriver's torque for under 4 kgf·cm.
Failure to do so may cause the Screw cap and the Mounting tab to fall off
on the rear of ceiling panel.
Follow the procedure below when repainting the front grille:
Step 1. Clean the front grille before painting.
Wipe with a soft cloth dampened in a detergent.
Caution: Do not use thinner or other volatile liquids to clean the grille.
Step 2. Spray on a uniform, thin coat of paint.
• Avoid painting with a roller or brush, as the grille mesh holes could become clogged with paint.
• Use appropriate spray paints for the front grille (grille and frame) materials.
Grille: Rolled steel plate
Frame: Fire-resistant ABS resin (acrylic paint)
• Be sure to follow the directions indicated on the paint when painting.
Step 3. After the paint has dried, apply another light coat.
Repeating Step 2, apply two or more light coats of paint.
Application of one thick coat of paint all at once may cause drips or unevenness to show up in the
painted finish, or clog the mesh holes.
Rated Input
Power Handling Capacity
Sound Pressure Level
Frequency Response
Speaker Component
Mounting Hole
Input Terminal
Usable Cable
6 W (High Impedance)
Continuous pink noise: 9 W (8 Ω)
Continuous program: 18 W (8 Ω)
100 V line: 1.7 kΩ (6 W), 3.3 kΩ (3 W)
70 V line: 830 Ω (6 W), 1.7 kΩ (3 W), 3.3 kΩ (1.5 W)
25 V line: 830 Ω (0.75 W), 1.7 kΩ (0.4 W), 3.3 kΩ (0.2 W)
88 dB (1 W, 1 m)
65 – 18,000 Hz (–10 dB), 45 – 20,000 Hz (–20 dB)
at installation in 1/2 free sound field
(Measured by installing the unit in the center of a ceiling.)
10 cm (4") cone-type
ø135 mm (5 5/16")
Maximum ceiling thickness: 37 mm (1 29/64")
Push-in connector (Bridging terminal-2 branch type)
600 V vinyl-insulated cable (IV wire or HIV wire)
Solid copper wire:
ø0.8 – ø1.6 mm (equivalent to AWG 20 – 15)
Stranded copper wire: 0.75 – 1.25 mm2 (equivalent to AWG 18 – 17)
Baffle:‌Fire-resistant ABS resin (resin material grade: UL-94 V-0 or
its equivalent), black
Rim:‌Fire-resistant ABS resin (resin material grade: UL-94 V-0 or
its equivalent), white, paint
Punched net: Steel plate, white, paint
Dust cover:
Artificial fiber, black
ø155 (6 /64") x Depth 117 mm (4 39/64")
1 kg (including front grille)
Note: The design and specifications are subject to change without notice for improvement.
• Accessories
Front grille ................................................... 1
Paper pattern .............................................. 1
• Optional Component
HY-RR1 (Reinforcement Ring): ‌Reinforcement fitting dedicated to the F-1522SC to be used when the ceiling is
Traceability Information for Europe
TOA Corporation
7-2-1, Minatojima-Nakamachi, Chuo-ku, Kobe, Hyogo,
Authorized representative:
TOA Electronics Europe GmbH
Suederstrasse 282, 20537 Hamburg,
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