Vizio Speaker System F 2852CU2 User Manual

Rev. A  
INSTRUCTION MANUAL  
CEILING SPEAKER SYSTEM  
F-2852CU2  
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.  
Indicates a potentially hazardous situation which, if mishandled, could  
result in death or serious personal injury.  
WARNING  
Indicates a potentially hazardous situation which, if mishandled, could  
result in moderate or minor personal injury, and/or property damage.  
CAUTION  
• Use the specified mounting hardware in  
combination. Doing otherwise may cause the unit  
WARNING  
or component to fall off, resulting in personal injury.  
• 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.  
• 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  
• 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.  
CAUTION  
• 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.  
• 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.  
• Attach the safety wire to the unit. If not attached,  
the unit could fall off, resulting in personal injury.  
• 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.  
• Tighten each screw securely. Ensure that the unit  
has no loose joints after installation to prevent  
accidents that could result in personal injury.  
• Never hold the tweeter section as a handle to carry  
the unit during installation. If the diffuser breaks off,  
the unit could fall from an elevated position,  
resulting in possible personal injury.  
• Avoid touching the unit's sharp metal edge to  
prevent injury.  
3
 
2. GENERAL DESCRIPTION  
The F-2852CU2 is a flush-mounted Ceiling Speaker System that offers a wide frequency range of high-quality  
sound output. It is specifically designed to be mounted to a drop ceiling with use of the supplied tile bridge.  
3. FEATURES  
• Two-way bass-reflex speaker system designed to provide a wide frequency range and high power handling  
capability.  
• Ideal for locations that have high ceilings or require true-to-life sounds.  
• Uniform sound output levels are achievable not only in the position directly under the speaker, but also over  
a wide radius. (Coverage angle is approximately 110°.)  
• 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.  
• 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.  
4
 
4. NOMENCLATURE AND DIMENSIONS  
Unit: mm (inches)  
[Front]  
[Side]  
1
38 (1 /2)  
Front grille (accessory)  
2
236 (9 /8)  
[Rear]  
Safety wire (accessory)  
Safety wire hook  
Connector cover  
Choke bracket  
27  
Mounting hole: ø250 (9 /32)  
[Ceiling mounting]  
Tile bridge  
(accessory)  
Ceiling tile  
5
 
5. MOUNTING HARDWARE INSTALLATION  
Before mounting the speaker, check the ceiling structure is of drop ceiling with 2-foot standard ceiling tiles.  
[Installation view on Drop Ceilings]  
Caution  
Set the tile bridge so that both ends fit securely into the T-grids, even if the ceiling tile accidentally falls off.  
Tile bridge (accessory)  
T-grid  
Ceiling tile  
[Installation procedures]  
Step 1. Cut a ø250 mm (9 27/32") hole in the ceiling.  
Use the supplied paper pattern to position and trace the hole.  
27  
13  
ø250 5 mm (9 /32  
/64")  
Ceiling tile  
Step 2. Place the supplied tile bridge on the 2-foot tile as shown below.  
Tile bridge (accessory)  
2-foot tile  
T-grid  
6
 
Step 3. Attach a safety wire to prevent the speaker from accidentally falling.  
To attach, tie one end of the supplied safety wire around the speaker's safety wire hook, and tie its  
snap ring around a secure C-channel bar or suspension pipe.  
Safety wire (accessory)  
Secure C-channel bar or  
suspension pipe  
Tile bridge (accessory)  
2-foot tile  
T-grid  
Ceiling tile  
Safety wire (accessory)  
Safety wire hook  
Speaker unit  
7
 
6. WIRING  
6.1. Wiring through Hard or Flexible Conduit  
Note  
The choke bracket equipped with the speaker has not been evaluated by UL, for conduit connection and  
UL514B Standard.  
Flexible conduit of 3/8 or 1/2 inch trade size and the UL514B conduit fitting of the same trade size can also be  
used. When using the UL514 listed conduit fitting, detach the equipped choke bracket and mount the conduit  
fitting instead.  
Loosen the screw to allow the speaker cable to pass through.  
Plug the wired input connector into the speaker's socket,  
then pull the speaker cable from the choke bracket.  
(For wiring the input connector, refer to p. 10.)  
Flexible conduit  
Choke bracket  
Accommodating larger diameter conduit  
The choke bracket accommodates up to 3/8-inch  
(9.5 mm) flexible conduit. When larger diameter  
conduit should be fit, use a suitable fitting  
commercially available by replacing the existing  
choke bracket with it. Detaching the choke  
bracket by unscrewing it exposes a 7/8-inch (22  
mm) hole. Install the alternate fitting there.  
Retighten the screw to fix  
the flexible conduit.  
Note  
Ensure that the flexible conduit is securely fixed.  
Connector cover  
After completing the speaker cable connection, turn the connector cover  
in the direction indicated by the arrow, and fix the cover with 2 screws.  
8
 
6.2. Wiring with Naked Cables  
Loosen the screw to allow the speaker cable to pass through.  
Plug the wired input connector into the speaker's socket,  
then pull the speaker cable from the choke bracket.  
(For wiring the input connector, refer to p. 10.)  
Choke bracket  
Note  
Retighten the screw to fix  
the speaker cable.  
Ensure that the speaker cable is securely fixed.  
Connector cover  
After completing the speaker cable connection, turn the connector cover  
in the direction indicated by the arrow, and fix the cover with 2 screws.  
9
 
7. CABLE CONNECTION TO INPUT CONNECTOR  
Recommended cable types  
• Solid copper wire:  
ø1.0 – ø1.6 mm  
(equivalent to AWG 18 – 14)  
• Stranded copper wire: 0.75 – 2.5 mm2  
(equivalent to AWG 18 – 14)  
Cover mounting screw  
Step 1. Loosen the 2 cover mounting screws, and rotate the  
connector cover in the direction indicated by the  
arrow in the figure at right.  
Speaker unit  
Connector cover  
Removable input  
connector  
Step 2. Detach the removable input connector from the  
speaker's socket, and loosen the screw of the  
terminal to be used.  
Speaker unit  
Step 3. Insert the stripped cable end into the terminal and tighten the terminal screw with a screwdriver.  
[If not bridging] [If bridging]  
From Amplifier  
Note  
If not making bridge connections,  
be sure to tighten unused terminal  
screws to avoid their vibration.  
5 mm  
(13/64")  
To the  
next speaker  
10  
 
8. SPEAKER INSTALLATION  
Caution  
In  
Before mounting, check to be sure that the speaker's  
4 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  
Step 1. Insert the speaker through the mounting hole till it  
contacts the ceiling panel. While doing so, avoid  
directly touching the speaker's diffuser section.  
WARNING  
Mounting hole  
Never hold the tweeter section as a handle to  
carry the speaker during installation. If the  
tweeter section breaks off, the unit could fall  
from an elevated position, resulting in possible  
personal injury.  
Tweeter section  
Tweeter section  
Step 2. Rotate and tighten the mounting tab axis screws (4 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)  
11  
 
Step 3. Set the input power.  
Turn the input selector switch (on the unit's front) to  
set it to the desired input impedance.  
F-2852CU2  
(Factory-preset to 170 Ω.)  
3.3kΩ 1.5W  
0.2W  
0.9W  
1.9W  
3.7W  
7.5W  
670Ω  
330Ω  
170Ω  
83Ω  
7.5W  
15W  
30W  
60W  
Step 4. Attach the front grille.  
Align the tabs (4 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 (4 places)  
Tab (4 places)  
LOCK  
Front grille  
(accessory)  
12  
 
9. REMOVING THE SPEAKER FOR MAINTENANCE  
9.1. Detaching the Front Grille  
1
Unlock  
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.  
Front grille  
Pull lightly.  
2
9.2. Removing the Speaker  
Rotate the 4 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.  
13  
 
10. REPAINTING THE SPEAKER FRONT GRILLE  
Note: Be sure to detach the front grille from the speaker before repainting.  
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.  
11. INPUT OVERLOAD PROTECTION FUNCTION  
The F-2852CU2 features an internal input overload protection circuitry. If an extremely high input level is fed  
to the unit, the protection circuitry automatically cuts off the signal to the speaker element.  
A drastic reduction in sound volume indicates that the protection circuitry has been enabled.  
In such cases, simply reduce the amplifier volume. The protection circuitry will automatically reset in  
approximately 10 seconds. After reset, try to maintain the volume at a level slightly lower than before.  
Caution  
This protection circuitry does not completely protect the unit against extremely high input power levels.  
Depending on the type or duration of excessive power input, the protection circuitry might not be enabled,  
resulting in damage to the speaker element. Also, if the excessive power input continues for a long period of  
time, the circuitry may not be capable of resetting to its original condition.  
Use the system with care so that the speakers are not exposed to excessive power input.  
14  
 
12. SAFETY AGENCY COMPLIANCE  
This product is for indoor use only.  
• General signaling speaker, UL1480 Category UEAY and CAN/CSA C22.2 No. 205 Category UEAY7  
Products Listed under these categories are suitable for use in general (non-fire alarm) signaling service in  
conjunction with compatible Listed audio equipment, the combination of which is intended to be installed in  
accordance with the applicable requirements of the National Electrical Code (NEC) and the local authority  
having jurisdiction.  
• Suitable for use in air-handling spaces (UL2043)  
Fire Test for Heat and Visible Smoke Release for Discrete Products and their Accessories Installed in Air-  
Handling Spaces (1998) - NFPA 70 National Electrical Code (NEC) 2002, Article 300-22 (c) and NFPA 90A  
Installation of air-conditioning and ventilation systems, section 2-3.10.1 (a) exception 3.  
[Output power vs. switch settings for 25 V and 70 V line operation]  
The rotary switch on the F-2852CU2's front panel permits selection of speaker handling power on 25 V or 70  
V line operation as shown in the table below.  
70 V Line  
25 V Line  
Setting Position 1.5 W 7.5 W 15 W  
30 W 60 W 0.2 W 0.9 W 1.9 W 3.7 W 7.5 W  
15  
 
13. SPECIFICATIONS  
Enclosure  
Bass reflex type  
Rated Input  
60 W (High Impedance)  
Power Handling Capacity  
Impedance  
Continuous pink noise: 90 W (8 Ω), 60 W (16 Ω),  
70 V line: 83 Ω (60 W), 170 Ω (30 W), 330 Ω (15 W), 670 Ω (7.5 W), 3.3 kΩ (1.5 W)  
25 V line: 83 Ω (7.5 W), 170 Ω (3.7 W), 330 Ω (1.9 W), 670 Ω (0.9 W), 3.3 kΩ (0.2 W)  
16 Ω, 8 Ω  
Frequency Response  
Sound Pressure Level  
Speaker Component  
UL Cord  
60 – 20,000 Hz  
91 dB (1 W, 1 m)  
High frequency: Dome-type, Low frequency: 16 cm (6 1/2") cone-type  
UL1480 (UEAY), UL2043, CAN/CSA C22.2 No.205 (UEAY7)  
ø250 mm (9 27/32")  
Mounting Hole  
Maximum ceiling thickness: 37 mm (1 29/64")  
Removable locking connector with screw-down terminals  
(2 input terminals and 2 bridge terminals)  
Input Terminal  
Usable Cable  
Finish  
Solid copper wire:  
ø1.0 – ø1.6 mm (equivalent to AWG 18 – 14)  
Stranded copper wire: 0.75 – 2.5 mm2 (equivalent to AWG 18 – 14)  
Enclosure:  
Baffle:  
Steel plate, plating  
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  
ø280 mm (11 1/32") x Depth 236 mm (9 2/8")  
5.8 kg (including mounting accessories)  
Dimensions  
Weight  
Note: The design and specifications are subject to change without notice for improvement.  
• Accessories  
Front grille ............................................................ 1  
Tile bridge ............................................................ 1  
Safety wire (approx. 60 cm or 23 5/8") .................. 1  
Paper pattern ....................................................... 1  
533-06-148-00  
 

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