TOA P-2240 Power Amplifier Instruction Manual

P-2240 Power Amplifier
Instruction Manual

PA AMPLIFIERS
OPERATING INSTRUCTIONS
P-2240 CE, P-2240 CE-GB,P-2240 CE-AU

Thank you for purchasing TOA’s PA Amplifiers.
Please carefully follow the instructions in this manual to ensure the long, trouble-free use of your equipment.

IMPORTANT SAFETY INSTRUCTIONS

• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Do not use this apparatus near water.
• Clean only with a dry cloth.
• Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for the replacement of the obsolete outlet.
• Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
• Only use attachments/accessories specified by the manufacturer.
• Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. ****
• Unplug this apparatus during lightning storms or when unused for long periods of time.
• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

SAFETY PRECAUTIONS

• Before installation or use, be sure to carefully read all the instructions in this section for correct and safe operation.
• Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or cautions regarding safety.
• After reading, keep this 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 that 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.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operation and maintenance (servicing) instructions in the literature accompanying the appliance.
WARNING
Indicates a potentially hazardous situation that, if mishandled, could result in death or serious personal injury.
When Installing the Unit

• Do not expose the unit to rain or an environment where it may be splashed by water or other liquids, as doing so may result in fire or electric shock.
• Use the unit only with the voltage specified on the unit. Using a voltage higher than that which is specified may result in fire or electric shock.
• Do not cut, kink, or otherwise damage nor modify the power supply cord. In addition, avoid using the power cord in close proximity to heaters, and never place heavy objects — including the unit itself — on the power cord, as doing so may result in fire or electric shock.
• Avoid installing or mounting the unit in unstable locations, such as on a rickety table or a slanted surface. Doing so may result in the unit falling down and causing personal injury and/or property damage.
• The terminals marked with symbols are hazardous live. The external wiring to these terminals requires installation by an instructed person.
• The apparatus shall be connected to a main socket outlet with a protective earthing connection.
• The socket outlet shall be installed near the equipment and the plug shall be easily accessible.

When the Unit is in Use

• Should the following irregularity be found during use, immediately switch off the power, disconnect the power supply plug from the AC outlet and contact your nearest TOA dealer? Make no further attempt to operate the unit in this condition as this may cause fire or electric shock.
• If you detect smoke or a strange smell coming from the unit
• If water or any metallic object gets into the unit
• If the unit falls, or the unit case breaks
• If the power supply cord is damaged (exposure of the core, disconnection, etc.)
• If it is malfunctioning (no tone sounds)
• To prevent a fire or electric shock, never open nor remove the unit case as there are high voltage components inside the unit. Refer all servicing to qualified service personnel.
• Do not place cups, bowls, or other containers of liquid or metallic objects on top of the unit. If they accidentally spill into the unit, this may cause a fire or electric shock.

**CAUTION
Indicates a potentially hazardous situation that, if mishandled, could result in moderate or minor personal injury, and/or property damage.
When Installing the Unit**

• Never plug in nor remove the power supply plug with wet hands, as doing so may cause electric shock.
• When unplugging the power supply cord, be sure to grasp the power supply plug; never pull on the cord itself. Operating the unit with a damaged power supply cord may cause a fire or electric shock.
• Do not block the ventilation slots in the unit’s cover. Doing so may cause heat to build up inside the unit and result in fire. Also, periodically clean the ventilation slots of dust.
• Avoid installing the unit in humid or dusty locations, in locations exposed to direct sunlight, near the heaters, or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric shock.
• To avoid electric shocks, be sure to switch off the unit’s power when connecting speakers.
• Be sure to follow the instructions below when rack mounting the unit. Failure to do so may cause a fire or personal injury.
• Install the equipment rack on a stable, hard floor. Fix it with anchor bolts or make other arrangements to prevent it from falling down.
• When connecting the unit’s power cord to an AC outlet, use the AC outlet with the current capacity allowable to the unit.
• Rack-mounting screws are not supplied with the unit. Prepare them that are appropriate for the equipment rack.
• Keep the P-2240 amplifiers over 10 cm away from objects that may obstruct airflow to prevent the unit’s internal temperature rise.

When the Unit is in Use

• Do not operate the unit for an extended period of time with the sound distorting. Doing so may cause the connected speakers to heat, resulting in a fire.
• Switch off the power, and unplug the power supply plug from the AC outlet for safety purposes when cleaning or leaving the unit unused for 10 days or more. Doing otherwise may cause a fire or electric shock.

An all-pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in the electrical installation of the building.
The lightning flash with an arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

GENERAL DESCRIPTION

TOA’s Basic Power Amplifiers P-2240 is high cost-performance power amplifier suited for broadcasting paging or background music in schools, offices, shops, factories, mosques, churches, and large rooms.

FEATURES

• High durability, high reliability, and high-cost performance.
• Two balanced parallel inputs, one speaker line input.
• Speaker output of constant voltage distribution system (70 V or 100 V) and low impedance (4 ).
• Operates on both AC and DC power.
• Semi-fixed master volume control and independent speaker line input volume control.
• Semi-fixed and independent tone controls of boost and cut type for both high and low frequencies.
• Power the remote switch by making contact input.

NOMENCLATURE AND FUNCTIONS

[Front]

[Rear]

1. Power switch Press to turn ON the power. Press again to turn the power OFF. Disconnect the AC mains plug or DC Terminal to shut the power OFF completely.
2. The power indicator Lights green when power is switched ON.
3. The signal indicator Lights green when power is switched ON, and indicates an output signal.
4. The peak indicator Lights red to indicate the output signal reaches the peak level, this indicates that the sound is distorted. In such a case, adjust the master volume control to reduce the output level.
5. Master volume control Adjusts the overall signal level
6. Treble control A djusts treble response. Rotate clockwise to increase treble output, and counterclockwise to reduce it. The center position provides flat characteristics.
7. Bass control Adjusts bass response. Rotate clockwise to increase bass output, and counterclockwise to reduce it. The center position provides flat characteristics.
8. AC power cord Connects to an AC power source.
9. The power remote switch Connects to an external switch. With the unit’s power switched OFF, shorting the Power Remote terminals can remotely turn it. With ON, the power cannot be remotely controlled.
10. DC terminal Connects to a DC power supply of 24 V.
11. Output terminals Connect to speakers. When connecting speakers, use only one of the speaker output terminals, low or high impedance.
12. Terminal cover To avoid electric shocks by high voltage from the output/input terminal, put back the terminal cover after connecting cords.
13. Speaker line input 40 dB*, 10 k, unbalanced. Connects to 100 V line speaker output.
14. Speaker line in volume control Adjusts the signal level.
15. Line input 0 dB*, 10 k, transformer balanced. Connects to Line Out/Rec Out of Mixer Amplifier or Loop Out of other P-2240 Power Amplifier.
16. Loop output 0 dB*, 10, transformer balanced. Parallel connection with Line Input (15). Connects to Line In of other P-2240 Power Amplifier.
17. Functional earth terminal Hum noise may be generated when external equipment is connected to the unit. Connecting this terminal to the functional earth terminal of the external equipment may reduce the humming noise. Note: This terminal is not for protective earth. * 0 dB = 1 V

· Explanation of Symbols

driver to increase the volume, turn it counterclockwise to decrease the volume.
| Standby mode of the P-2240: push the button to set the system into standby mode. During the standby mode you cannot broadcast BGM but all other system functions are still active.
**| Warning: Indicates a potentially hazardous situation which, if mishandled, could result in death or serious personal injury.
| Do not touch the parts indicated with this symbol. These can provide a dangerous voltage that can result in death or serious personal injury when touching them.
| Do not trash this device into normal waste. Use the foreseen electric waste collection places.
**| This mark is a declaration that this product complies with all applicable EU directive and regulations.
| This symbol indicates that a switch can be connected to the two clamps for remotely switching on the unit.
****| This symbol will indicate a device’s compliance with all applicable ACMA regulatory arrangements (telecommunications, radio communications, EMC and EME) ; and with applicable electrical equipment safety requirements relevant to each state and territory in Australia.

CONNECTIONS

6.1. Input Connections
6.1.1. Connection with the mixer preamplifier having the balanced type output
Because it is hard to be affected by the external noise, the connections of the balanced type please adopt this connection manner as much as possible.
And also it recommends this connection when the distance of the mixer preamplifier is separated from this power amplifier is more than 10 m or, in a location where the re is a lot of electric noise.

6.1.2. Connection with the mixer preamplifier having the unbalanced type output
Please make the length of the cable less than several meters.

6.1.3. Speaker line input connection
It is connected to the High Impedance (70 V/100 V) speaker wiring of another amplifier.

6.1.4. Parallel connection of the input
6.1.5. Remote power switch connection
6.2. Output Connections
Notes

• Tripartite the 4, 70 V and 100 V terminals cannot be used at the same time.
• Impedances indicated at the terminal represent the total speaker system (load) impedances.
  The total impedance of 100 V line: 42 Total impedance of 70 V line: 21

CAUTION
Be sure to attach the supplied terminal cover after connection completion.
Because high voltage is applied to the speaker terminals, never touch these terminals to avoid electric shock.
6.3. Example of External Equipment Connections

INSTALLATION

Keep the unit’s all sides over 10 cm (3.94 inches) away from objects that may obstruct airflow to prevent the unit’s internal temperature rise.

VOLUME CONTROL SETTINGS

Output levels are adjustable with individual volume controls. For music play or announcement, adjust the corresponding volume control so that the red peak indicator lights intermittently. Note that the sound quality is downgraded when the peak indicator remains lit.

BLOCK & LEVEL DIAGRAM

DIMENSIONAL DIAGRAM

SPECIFICATIONS

(DC operation at rated output)
Frequency Response| 50 Hz — 20 kHz (±3 dB)
Distortion| 1% or less at 1 kHz, 1/3 rated power
Input| Line in: 0 dB*, 10 kG, balanced, screw terminal,
distance between barriers: 8.3 mm (0.33″) Speaker line in: 40 dB’, 330 Ica unbalanced, screw terminal.
distance between barriers: 8.3 mm (0.33″) Power remote control: Make contact
Output| Loop out: 0 dB’, 10 kO, balanced, screw terminal,
distance between barriers: 8.3 mm (0.33″) Speaker out: Balanced (floating)
High impedance: 42 0 (100 V), 21 0 (70 V) Low impedance: 4 0 (31 V)
S/N Ratio| 60 dB or more
Tone Control| Bass: ±10 dB at 100 Hz
Treble: ±10 dB at 10 kHz
Ventilation| Fan cooling
Finish| Panel: ABS resin, black Case. Steel plate, black
Dimensions| 420 (w) x 100.9 (h) x 351.3 (d) mm (16 54″ x 3.97″ x 13.83″)
Weight| 13.2 kg (29.1 lb)

• 0 dB = 1 V
  Notes

  • CE, CE-AU, and CE-GB are the identically same specifications, but only the power supply cord is different.
  • The design and specifications are subject to change without notice for improvement.

Traceability Information for Europe

Manufacturer:
TOA Corporation
7-2-1, Minatojima-Nakamachi, Chuo-ku, Kobe, Hyogo, Japan
Authorized representative:
TOA Electronics Europe GmbH
Suederstrasse 282, 20537 Hamburg, Germany
URL: https://www.toa.jp/
133-02-00595-00

References

• HOME | TOA - Sound and Communication

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>