INSTRUCTION MANUAL
CEILING SPEAKER SYSTEM
F-2352SC
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 ................................. 9
7. REPAINTING THE SPEAKER .................. 10
8. SPECIFICATIONS .................................... 11
Accessories ............................................... 11
Optional Components ................................ 11
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.
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2. GENERAL DESCRIPTION
The F-2352SC is a 2-way, flush-mounted ceiling speaker that offers a wide frequency range and high-quality
sound output. Use of optional mounting hardware permits versatile mounting to match a wide range of
applications and installation locations.
3. FEATURES
• A rear-open type 2-way speaker system employing a speaker element designed to provide 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.
• Use of the optional HY-BC1 permits exposed speaker installation.
4. NOMENCLATURE AND DIMENSIONS
Unit: mm (inches)
[Front]
[Side]
[Rear]
Dust cover
41 (1 39/64)
154 (6 1/16)
Front grille (accessory)
Push-in terminal
[Ceiling mounting]
Mounting hole: ø200 (7 7/8)
Ceiling panel
3
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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-2352SC ceiling speaker can be mounted in 6 different configurations:
• Direct mounting to a strong ceiling panel
No additional hardware required.
• Direct mounting to a weak ceiling panel
Use the optional HY-RR2 Reinforcement Ring.
• Mounting to a ceiling frame
Use the optional HY-RR2 in conjunction with the optional HY-TB1 Tile Bar Bridge.
• Ceiling mounting in a larger than specified hole
Use the optional HY-RR2 in conjunction with the optional HY-TR1 Trim Ring.
• Mounting to an anchor bolt
Use the optional HY-RR2 in conjunction with the optional HY-AH1 Anchor Hanging Bracket.
• Hanging from a ceiling suspension pipe (exposed installation)
Use the optional HY-BC1 Back Can.
Mount the speaker using the most appropriate method for the ceiling panel or installation location.
Step 1. Cut a ø200 mm (7 7/8") hole in the ceiling.
ø200 5 mm (7 7/8 13/64")
Use the supplied paper pattern to position and
Ceiling panel
trace the hole.
Step 2. Mount fittings to a ceiling or hanging pipe.
Tip: Skip this step when the ceiling is strong (no additional hardware needed).
2-1. Direct mounting to a weak ceiling panel
Fold the optional HY-RR2 Reinforcement
Ring in half* and insert it through the
mounting hole in the ceiling panel, then open
it with its tabs facing up.
Mounting hole
Place the ring on the ceiling panel aligning it
with the mounting hole.
HY-RR2 (optional)
* The HY-RR2 is too large to be inserted into
the mounting hole unless folded.
HY-RR2 placed on ceiling panel
These tabs must
face upward,
away from the hole.
4
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2-2. Mounting to a ceiling frame
Use the optional HY-RR2 Reinforcement Ring in conjunction with the optional HY-TB1 Tile Bar Bridge.
Note
Refer to the instruction manual included with the HY-TB1 for the correct ceiling mounting procedure.
[Installed HY-TB1 and HY-RR2]
HY-TB1 (optional)
Ceiling frame
HY-RR2 (optional)
Ceiling panel
2-3. Ceiling mounting in a larger than specified hole
Use the optional HY-RR2 Reinforcement Ring in conjunction with the optional HY-TR1 Trim Ring.
Note
Refer to the instruction manual included with the HY-TR1 for the correct ceiling mounting procedure.
[Installed HY-TR1 and HY-RR2]
ø200 – ø300 mm
(7 7/8" – 11 13/16")
HY-RR2 (optional)
Ceiling panel
HY-TR1
(optional)
Speaker unit
2-4. Mounting to an anchor bolt
[Installed HY-AH1 and HY-RR2]
Use the optional HY-RR2 Reinforcement Ring in
conjunction with the optional HY-AH1 Anchor
Hanging Bracket.
Anchor bolt
Note
Refer to the instruction manual included with the
HY-AH1 for the correct mounting procedure.
HY-AH1
(optional)
HY-RR2 (optional)
Ceiling panel
5
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2-5. Hanging from a ceiling suspension pipe (exposed installation)
Use the optional HY-BC1 Back Can.
[Installed HY-BC1]
(Example of mounting to suspension pipe)
Note
Refer to the instruction manual included
with the HY-BC1 for Back Can installation.
Suspension pipe
Caution
Ensure that this length is
shorter than 53 mm (2 3/32").
Speaker cable
HY-BC1 (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
9 mm (23/64")
To detach the cable, press fully down on the terminal button
again, then pull the cable.
[If not bridging]
[If bridging]
From Amplifier
To the next speaker
Step 4. Mount the speaker.
Caution
In
Before mounting, check to be sure that the speaker's
3 mounting tabs are turned inside the unit as shown in
the figure.
Out
If turned outward, the speaker cannot be inserted
through the mounting hole.
Mounting tab
6
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4-1. Flush ceiling mounting (in the cases except for Step 2-5)
Insert the speaker through the mounting hole till it
contacts the ceiling panel. While doing so, avoid
directly touching the speaker's diaphragm and
diffuser section.
Mounting hole
WARNING
Never grab the diffuser section as a hand hold.
The speaker could fall due to damage,
resulting in possible personal injury.
Diffuser section
Diffuser section
Rotate and tighten the mounting tab axis screws
(3 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
Use an electric screwdriver to tighten.
(Tightening torque: 6 – 10 kgf·cm)
4-2. Exposed mounting (in the case of Step 2-5)
HY-BC1 Back Can attached
to suspension pipe
(optional)
Use the optional HY-BC1 Back Can.
To mount, follow Step 4-1.
Caution
Take care not to pinch
Mounting tab
the speaker cable.
Electric screwdriver
7
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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.
Speaker unit
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.
Notch (3 places)
LOCK
Tab (3 places)
Front grille (accessory)
8
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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.
1
Unlock
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.
Front grille
Pull lightly.
2
6.2. Removing the Speaker
Rotate the 3 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
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.
9
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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.
10
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8. SPECIFICATIONS
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)
100 V line: 1.7 kΩ (6 W), 3.3 kΩ (3 W), 10 kΩ (1 W), 20 kΩ (0.5 W)
Impedance
70 V line: 830 Ω (6 W), 1.7 kΩ (3 W), 3.3 kΩ (1.5 W), 10 kΩ (0.5 W),
20 kΩ (0.25 W)
25 V line: 830 Ω (0.75 W), 1.7 kΩ (0.4 W), 3.3 kΩ (0.2 W),
10 kΩ (0.06 W), 20 kΩ (0.03 W)
16 Ω, 8 Ω
Sound Pressure Level
Frequency Response
89 dB (1 W, 1 m)
80 – 20,000 Hz (–10 dB), 50 – 20,000 Hz (–20 dB)
at installation in 1/2 free sound field
(Measured by installing the unit in the center of a ceiling.)
High frequency: Balanced dome-type
Low frequency: 12 cm (5") cone-type
ø200 (7 7/8")
Speaker Component
Mounting Hole
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)
Input Terminal
Usable Cable
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:
Rim:
Fire-resistant ABS resin (resin material grade: UL-94 V-0
or its equivalent), black
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
ø230 (9 1/16")x Depth 154 mm (6 1/16")
1.5 kg (including front grille)
Dimensions
Weight
Note: The design and specifications are subject to change without notice for improvement.
• Accessories
Front grille ............................................................ 1
Paper pattern ....................................................... 1
• Optional Components
HY-RR2 (Reinforcement ring):
This is a special fitting for use with the F-2352SC. Use this ring when
mounting the speaker unit to a weak ceiling. This ring can also be used in
conjunction with the HY-TB1, HY-TR1, or HY-AH1.
HY-TB1 (Tile Bar Bridge):
HY-TR1 (Trim Ring):
Place this bridge on the ceiling frame when mounting the speaker unit to
a weak suspended ceiling.
Use this ring when mounting the speaker in pre-existing holes that are
larger than the designated 200 mm (7 7/8") in diameter.
HY-AH1 (Anchor Hanging Bracket): Attach this bracket to an anchor bolt when mounting the speaker unit to a
weak ceiling.
HY-BC1 (Back Can):
Use this Back Can when mounting the speaker unit in exposed hanging
applications.
11
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Printed in Indonesia
533-06-094-8A
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