CEILING SPEAKER SYSTEM F-1522SC INSTRUCTION MANUAL TABLE OF CONTENTS

CEILING SPEAKER SYSTEM F-1522SC INSTRUCTION MANUAL TABLE OF CONTENTS
INSTRUCTION MANUAL
CEILING SPEAKER SYSTEM
F-1522SC
TABLE OF CONTENTS
1. SAFETY PRECAUTIONS .......................... 2
2. GENERAL DESCRIPTION ........................ 3
3. FEATURES ................................................ 3
4. NOMENCLATURE AND DIMENSIONS .... 3
5. INSTALLATION ......................................... 4
6. REMOVING THE SPEAKER
FOR MAINTENANCE ................................. 6
7. REPAINTING THE SPEAKER .................... 7
8. SPECIFICATIONS ...................................... 8
Accessories ................................................. 8
Optional Component ................................... 8
Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.
1. SAFETY PRECAUTIONS
• 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.
WARNING
Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.
CAUTION
Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.
WARNING
• 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
damage.
• 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
injuries.
• 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.
2
• 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
CAUTION
• 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.
2. GENERAL DESCRIPTION
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.
3. FEATURES
• 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 and walls.
• 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.
4. NOMENCLATURE AND DIMENSIONS
[Front]
Unit: mm (inches)
[Side]
[Rear]
ø155 (6 7/64)
Dust cover
11 (7/16)
Front grille (accessory)
117 (4 39/64)
Push-in terminal
[Ceiling mounting]
Max. 106 (4 11/64)
Max. 37 (1 29/64)
Mounting hole: ø135 (5 5/16)
Ceiling panel
3
5. INSTALLATION
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 5/16±13/64")
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.
Tip
To detach the cable, press fully down on the terminal button again,
then pull the cable.
[If not bridging]
[If bridging]
9 mm (23/64")
From
Amplifier
To the next
speaker
4
Step 4. Mount the speaker.
Caution
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.
In
Out
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
Diaphragm
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)
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.
Mounting tab
Cut-out section
HY-RR1
5
Step 5. Set the input power.
Turn the input selector switch (on the unit's front) to set it to
the desired input impedance. (Factory-preset to 1.7 kΩ.)
Important
Never set this switch to low-impedance (8 Ω or 16 Ω) settings
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.
Tip
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)
LOCK
Tab (3 places)
Front grille (accessory)
6. REMOVING THE SPEAKER FOR MAINTENANCE
6.1. Detaching the Front Grille
1
Turn the front grille counterclockwise to full stop, then lightly
pull it downward.
Tip
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.
6
Unlock
Front grille
2
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.
Caution
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.
Caution
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.
7. REPAINTING THE SPEAKER
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.
Cautions
• 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.
Caution
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.
7
8. SPECIFICATIONS
Rated Input
Power Handling Capacity
Impedance
Sound Pressure Level
Frequency Response
Speaker Component
Mounting Hole
Input Terminal
Usable Cable
Finish
Dimensions
Weight
6 W (High Impedance)
Continuous pink noise: 9 W (8 Ω), 6 W (16 Ω)
Continuous program: 18 W (8 Ω), 12 W (16 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)
16 Ω, 8 Ω
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 7/64") 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 weak
Printed in Indonesia
533-06-102-6A
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