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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.
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TABLE OF CONTENTS 1. SAFETY PRECAUTIONS ............................................................................... 3 2. GENERAL DESCRIPTION ............................................................................. 4 3. FEATURES .......................................................................................................... 4 4. NOMENCLATURE AND DIMENSIONS ..................................................... 5 5. MOUNTING HARDWARE INSTALLATION ................................
ページ3に含まれる内容の要旨
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
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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
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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 1 ø280 (11 /32) 29 Max. 37 (1 /64) 61 Max. 202 (7 /64) 5 Approx. 600 (23 /8) 41 ø245 (9 /64)
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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] 27 Step 1. Cut a ø250 mm (9 /32") hole in the ceiling. Use the supplied paper pattern to position and trace the hol
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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
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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
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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. Choke bracket (For wiring the input connector, refer to p. 10.) Note Retighten the screw to fix Ensure that the speaker cable is securely fixed. the speaker cable. Connector cover After completing the speaker cable connection, turn the connector cover in the direction indicated by the arro
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7. CABLE CONNECTION TO INPUT CONNECTOR Recommended cable types • Solid copper wire: ø1.0 – ø1.6 mm (equivalent to AWG 18 – 14) 2 • Stranded copper wire: 0.75 – 2.5 mm (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
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8. SPEAKER INSTALLATION Caution In Before mounting, check to be sure that the speaker's Out 4 mounting tabs are turned inside the unit as shown in the figure. If turned outward, the speaker cannot be inserted Mounting tab through the mounting hole. 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 du
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Step 3. Set the input power. Turn the input selector switch (on the unit's front) to F-2852CU2 set it to the desired input impedance. (Factory-preset to 170 Ω.) 3.3kΩ 1.5W 0.2W 670Ω 7.5W 0.9W 330Ω 15W 1.9W 170Ω 30W 3.7W 83Ω 60W 7.5W 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
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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 Front grille position. In such cases, take care to rotate the grill fully counterclockwise in order to release the lock. 2 Pull lightly. 9.2. Removing t
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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
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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 jurisdictio
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13. SPECIFICATIONS Enclosure Bass reflex type Rated Input 60 W (High Impedance) Power Handling Capacity Continuous pink noise: 90 W (8 Ω), 60 W (16 Ω), Impedance 70 V line: 83 Ω (60 W), 170 Ω (30 W), 330 Ω (15 W), 670 Ω (7.5 W), 3.3 k Ω (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 k Ω (0.2 W) 16 Ω, 8 Ω Frequency Response 60 – 20,000 Hz Sound Pressure Level 91 dB (1 W, 1 m) 1 Speaker Component High frequency: Dome-type, Low frequency: 16 cm (6 /2") cone-typ
