TOA Electronics Speaker F 2352SC User Manual

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.  
 
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
 
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
 
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
 
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
 
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
 
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 k.)  
Important  
Never set this switch to low-impedance (8 or 16 )  
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
 
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
 
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  
 
8. SPECIFICATIONS  
Rated Input  
6 W (High Impedance)  
Power Handling Capacity  
Continuous pink noise: 9 W (8 ), 6 W (16 )  
Continuous program: 18 W (8 ), 12 W (16 )  
100 V line: 1.7 k(6 W), 3.3 k(3 W), 10 k(1 W), 20 k(0.5 W)  
Impedance  
70 V line: 830 (6 W), 1.7 k(3 W), 3.3 k(1.5 W), 10 k(0.5 W),  
20 k(0.25 W)  
25 V line: 830 (0.75 W), 1.7 k(0.4 W), 3.3 k(0.2 W),  
10 k(0.06 W), 20 k(0.03 W)  
16 , 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  
 
Printed in Indonesia  
533-06-094-8A  
 

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