Toa F-1522SC User Manual

INSTRUCTION MANUAL

CEILING SPEAKER SYSTEM F-1522SC

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.

TABLE OF CONTENTS

• 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.

• 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.

2

CAUTION

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.

Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.

WARNING

CAUTION

3

4. NOMENCLATURE AND DIMENSIONS

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.

[Front]

Front grille (accessory)

[Ceiling mounting]

/64)

7

ø155 (6

[Side] [Rear]

7/

11 (

16

)

117 (4 39/64)

Mounting hole: ø135 (5

Dust cover

5

/16)

Unit: mm (inches)

Push-in terminal

/64)

11

Max. 106 (4

Ceiling panel

/64)

29

Max. 37 (1

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 mm

2

(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.

5. INSTALLATION

Step 1. Cut a ø135 mm (5 5/16") hole in the ceiling.

Use the supplied paper pattern to position and trace
the hole.

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).

4

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.

ø135 ±5 mm (5

5

/16±13/64")

Use the cut-out section to insert the HY-RR1 into the ceiling as shown below.

HY-RR1 placed on

Mounting hole

Cut-out section

HY-RR1 (optional)

ceiling panel

Ceiling panel

[If not bridging] [If bridging]

From
Amplifier

To the next
speaker

9 mm (23/64")

5

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.

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.

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.

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.

In

Out

Mounting tab

Mounting hole

Diaphragm

Use an electric screwdriver to tighten.
(Tightening torque: 6 – 10 kgf·cm)

Mounting tab

Mounting tab axis screw
(2 places)

Avoid this way.

Mounting tab

Cut-out section

HY-RR1

6

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.

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 screwdriver.

Note: The switch is factory-preset to 1.7 kΩ.

6. REMOVING THE SPEAKER FOR MAINTENANCE

6.1. Detaching the Front Grille

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.

Important

Never set this switch to low impedance (8 Ω or 16 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.

Input selector switch

Speaker's front

Slotted screwdriver

Speaker unit

Notch (3 places)

LOCK

Tab (3 places)

Front grille (accessory)

2

Pull lightly.

1

Unlock

Front grille

7

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.

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.

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.

8. SPECIFICATIONS

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

Rated Input 6 W (High Impedance)
Power Handling Capacity Continuous pink noise: 9 W (8 Ω), 6 W (16 Ω)

Continuous program: 18 W (8 Ω), 12 W (16 Ω)

Impedance 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

Sound Pressure Level 88 dB (1 W, 1 m)
Frequency Response 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.)
Speaker Component 10 cm (4") cone-type
Mounting Hole ø135 mm (5 5/16")

Maximum ceiling thickness: 37 mm (1 29/64")
Input Terminal Push-in connector (Bridging terminal-2 branch type)
Usable Cable 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)
Finish 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

Dimensions ø155 (6 7/64") x Depth 117 mm (4 39/64")
Weight 1 kg (including front grille)

533-06-102-6D

URL: http://www.toa.jp/

Traceability Information for Europe

Manufacturer:

TOA Corporation
7-2-1, Minatojima-Nakamachi, Chuo-ku, Kobe, Hyogo,
Japan

Authorized representative:

TOA Electronics Europe GmbH
Suederstrasse 282, 20537 Hamburg,
Germany