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INSTRUCTION MANUAL
CEILING SPEAKER SYSTEM F-2852C
TABLE OF CONTENTS
1. SAFETY PRECAUTIONS .......................... 2 7. REPAINTING THE SPEAKER .................. 10
2. GENERAL DESCRIPTION ........................ 3 8. ABOUT THE INPUT OVERLOAD
PROTECTION CIRCUITRY ...................... 10
3. FEATURES ................................................ 3
9. SPECIFICATIONS .................................... 11
4. NOMENCLATURE AND DIMENSIONS .... 4
Accessories ....................................
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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 r
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2. GENERAL DESCRIPTION The F-2852C is a 2-way, flush-mounted ceiling speaker that offers a wide frequency range and high-quality sound output. Use of its supplied and optional mounting hardware permits versatile mounting to match a wide range of applications and installation locations. 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. • Un
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4. NOMENCLATURE AND DIMENSIONS Unit: mm (inches) [Front] [Side] 1 38 (1 /2) Front grille (accessory) 15 227 (8 /16) [Rear] Safety wire (accessory) Safety wire hook Detachable input connector 27 Mounting hole: ø250 (9 /32) [Ceiling mounting] Ceiling reinforcement ring (accessory) Ceiling panel 4 1 ø280 (11 /32) 29 Max. 37 (1 /64) 7 Max. 200 (7 /8) 5 Approx. 600 (23 /8) 41 ø245 (9 /64)
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5. INSTALLATION The F-2852C ceiling speaker can be mounted in 3 different configurations: • Direct mounting to a ceiling panel Use the supplied ceiling reinforcement ring. • Mounting to a ceiling frame Use the supplied ceiling reinforcement ring in conjunction with the optional HY-TB1 Tile Bar Bridge. • Mounting to an anchor bolt Use the supplied ceiling reinforcement ring in conjunction with the optional HY-AH1 Anchor Hanging Bracket. Mount the speaker using the most appropriate method for t
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Step 3. Install mounting hardware on the ceiling. 3-1. Direct mounting to a ceiling panel Mounting hole Fold the supplied ceiling reinforcement ring in half* and insert it through the mounting hole in the ceiling panel, then open it with its tabs facing up. Place the ring on the ceiling panel aligning it with the mounting hole. Ceiling reinforcement ring (accessory) * The reinforcement ring is too large to be inserted into the mounting hole unless folded. Reinforcement ring placed on ceilin
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Step 4. Attach a safety wire to prevent the speaker from accidentally falling. Secure C-channel bar or anchor bolt in the ceiling To attach, tie one end of the supplied safety wire around the speaker's safety wire hook, and tie its snap ring around Safety wire a secure C-channel bar or anchor bolt (accessory) in the ceiling. Safety wire hook Speaker unit Detachable input Step 5. Plug the detachable input connector into the speaker's connector wiring socket. Speaker unit Step 6. Mount the sp
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6-2. 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) Step 7. 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 170 Ω .) Important Never set this switch to low-impedance (8 Ω or 16 Ω ) settin
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6. REMOVING THE SPEAKER FOR MAINTENANCE 6.1. 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, Front grille 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. Pull lightly. 2 6.2. Removing t
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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
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9. 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 ), Continuous program: 180 W (8 Ω ), 120 W (16 Ω ) Impedance 100 V line: 170 Ω (60 W), 330 Ω (30 W), 670 Ω (15 W), 3.3 kΩ (3 W) 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 Sound Pressure Level 91 dB (1 W, 1 m) Fre
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Printed in Indonesia 533-06-096-80
