Toa F-2852CU2 Instruction Manual
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Toa F-2852CU2 Instruction Manual

Ceiling speaker system
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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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Summary of Contents for Toa F-2852CU2

  • Page 1 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.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1. SAFETY PRECAUTIONS 2. GENERAL DESCRIPTION 3. FEATURES 4. NOMENCLATURE AND DIMENSIONS 5. MOUNTING HARDWARE INSTALLATION 6. WIRING 6.1. Wiring through Hard or Flexible Conduit ... 8 6.2. Wiring with Naked Cables ... 9 7. CABLE CONNECTION TO INPUT CONNECTOR 8.

  • Page 3: Safety Precautions

    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. •...

  • Page 4: General Description

    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 •...

  • Page 5: Nomenclature And Dimensions

    4. NOMENCLATURE AND DIMENSIONS Unit: mm (inches) [Front] [Side] 38 (1 Front grille (accessory) 236 (9 [Rear] Safety wire (accessory) Safety wire hook Connector cover Choke bracket Mounting hole: ø250 (9 [Ceiling mounting] Tile bridge (accessory) Ceiling tile...

  • Page 6: Mounting Hardware Installation

    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. T-grid [Installation procedures] Step 1.
  • Page 7 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. Secure C-channel bar or suspension pipe T-grid...

  • Page 8: Wiring

    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.

  • Page 9: Wiring With Naked Cables

    6.2. Wiring with Naked Cables Choke bracket Retighten the screw to fix the speaker cable. 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. Loosen the screw to allow the speaker cable to pass through.

  • Page 10: Cable Connection To Input Connector

    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 mm (equivalent to AWG 18 – 14) 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.

  • Page 11: Speaker Installation

    8. SPEAKER INSTALLATION Caution Before mounting, check to be sure that the speaker's 4 mounting tabs are turned inside the unit as shown in the figure. If turned outward, the speaker cannot be inserted through the mounting hole. Step 1. Insert the speaker through the mounting hole till it contacts the ceiling panel.
  • Page 12 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. F-2852CU2 3.3kΩ 1.5W 670Ω...

  • Page 13: Removing The Speaker For Maintenance

    9. REMOVING THE SPEAKER FOR MAINTENANCE 9.1. Detaching the Front Grille Turn the front grille counterclockwise to full stop, then lightly pull it downward. 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.

  • Page 14: Repainting The Speaker Front Grille

    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.

  • Page 15: Safety Agency Compliance

    [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.

  • Page 16: Specifications

    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 kΩ (1.5 W) 25 V line: 83 Ω...

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F-2852c

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