TOA IP Power Amplifier

Table of Contents

• 1. Safety Precautions
• 2. Summary and Features
• 3. About Security Measures
• 4. System Example
• 5. Dimensional Drawings
• 6. Nomenclature and Functions
• 7. Handling Precautions
• 8. Unit Mounting
• 9. Connections
• 10. Settings
• 11. Initialization of Settings
• 12. Cautions Regarding the AVC/H.264 Patent License
• 13. Open Source Software
• 14. Accessories

1. 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.

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.
• Do not touch the unit and LAN cable during thunder and lightning, as this may result in electric shock.
• To prevent the electromagnetic wave from badly influencing medical equipment, make sure to switch off the unit's power when placing it in close proximity to the medical equipment.

When the Unit is in Use

Should the following irregularity be found during use, immediately cut off the power supply from a PoE+ switching hub and contact your nearest TOA dealer. Make no further attempt to operate the speaker 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 LAN cable is damaged (exposure of the core, disconnection, etc.)
• If the speaker suddenly stops producing sound

General Safety

• 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.

When Installing the Unit (Continued)

• 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.
• Avoid touching the unit's sharp metal edge to prevent injury.
• 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 take other arrangements to prevent it from falling down.

When connecting the unit's power cord to an AC outlet, use the AC outlet with current capacity allowable to the unit.

Use the optional MB-15B-BK Half Width Blank Panel to rack-mount the unit.

The rack-mounting screws supplied with the MB-15B-BK can be used for the TOA equipment rack only. Do not use them for other racks.

The IP-A1PA12 IP Power Amplifier is capable of delivering extremely high volume sound output. Therefore, close proximity to the unit over time could present the danger of hearing impairment. Be sure to follow the instructions below when conducting performance tests:

• Turn down the sound volume before adjusting the volume.
• Do not position one's ear close to the speaker.
• Point the unit in a direction where no people are present.
• Avoid listening to high-volume output for prolonged periods of time.

FCC Requirements

Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.

Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Modifications

Any modifications made to this device that are not approved by TOA Corporation may void the authority granted to the user by the FCC to operate this equipment.

Declaration

Any modification to the unit, unless expressly approved by TOA Electronics, Inc., could void your authority to operate the equipment.

Declaration of Conformity

TOA Electronics, Inc.
1 Harmon Plaza, Suite 700 Secaucus, New Jersey 07094, USA
TEL 650-452-1200
declares under its sole responsibility that the product IP POWER AMPLIFIER 12W IP-A1PA12 complies with Part 15 of FCC Rules. Operation is subject to the following conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Warning: Operation of this equipment in a residential environment could cause radio interference.

This equipment is not suitable for use in locations where children may be present.

2. Summary and Features

The IP-A1PA12 is an IP Power Amplifier which decodes IP audio streams into analog signals. It is equipped with a built-in 12 W amplifier to drive High-impedance speaker(s). Analog audio and control outputs can be connected to an external amplifier for scaling up the system capability.

• Power is supplied by way of PoE+ (IEEE 802.3at) switching hubs.
• The IP Power Amplifier is compatible with the following broadcasting modes:

• Orders of priority can be set among the various broadcasting modes, meaning higher priority broadcasts can interrupt and override lower priority broadcasts.
• Since the unit is equipped with individual offset adjustable volumes for each broadcasting modes and patterns (internal sound source), actual broadcasting volume can be normalized or optimized.
• Broadcasts can be controlled using Remote API or control inputs from connected external equipment.
• Connected external equipment can be controlled by control outputs in synchronization with speaker broadcasts.
• This unit can be connected to an external amplifier and can broadcast from an external amplifier to a speaker line connected to this unit. It is possible to build a system that can broadcast from the network by sharing a speaker line of an existing PA system.

3. About Security Measures

• Ensure that sufficient security measures are taken on the customer's own responsibility.
• TOA Corporation takes no responsibility for damage or loss caused by security-related problems, such as illegal access.
• To help prevent illegal access to the unit, be sure to change the user ID and password from those used for initial setup. For setting methods and other details, please refer to the separate receiving device setup manual which can be downloaded from the TOA DATA Library (https://www.toa-products.com/international/).
• Take utmost care in the management of the unit's communications password.

4. System Example

4.1. SIP Broadcasting/Two-way Communication

SIP phone conversations possible using a microphone and a speaker connected to the unit.

Tips:

• Set the local broadcasting settings "OFF." If it is "ON," the microphone input voice will be output to the speaker.
• When the voice switch setting is "ON," the call will be half-duplex.

4.2. VMS Broadcast System

VMS software broadcasts can be performed to speakers connected with the unit. An external microphone can also be connected for monitoring audio in the field.

Tip: Set the local broadcasting settings "OFF." If it is "ON," the microphone input sound will be output to the speaker.

4.3. Linked External Amplifier Broadcast System

The speaker line connected to this unit can be shared with an external amplifier for broadcasting from the external amplifier. By connecting a speaker line and control signal of existing PA system to this unit, it is possible to build a system that combines an analog PA system and a network PA system.

5. Dimensional Drawings

Unit: mm (in)

Front View

A rectangular unit with dimensions 210 mm (8.27 in) wide and 44 mm (1.73 in) high. Features include a TOA logo, LINE/MIC IN VOLUME SIGNAL, OUTPUT SIGNAL, and STATUS indicators, and the product name 'IP POWER AMPLIFIER IP-A1PA12'.

Rear View

A rectangular panel with various terminals. Dimensions are 3.6 mm (0.14 in) height. Terminals include SPEAKER OUTPUT (25V, 70V, 100V), EXTERNAL AMP INPUT, LINE OUT, LINE/MIC IN, MUTE, 24V DC, LAN, CTRL OUT, and CTRL IN.

Side View

A view showing the depth and mounting points. Dimensions are 81.5 mm (3.21 in) deep, with a height of 33 mm (1.3 in) and width of 11 mm (0.43 in) at the front, tapering to 26 mm (1.02 in) at the rear. A reference dimension of 3 mm (0.12 in) is also shown.

6. Nomenclature and Functions

Front Panel

1. Status indicator (green, blue, yellow, red): Indicates the unit's operating status.
   • Operation: System startup (Flashing green), Broadcast standby (Continuously lit green), Broadcasting (Continuously lit blue), System mute* (Flashing red), External Amplifier (Idle: Flashing green, Broadcasting: Flashing blue), Initialization or firmware updating (Continuously lit yellow).
   • LINE/MIC input volume control: Adjusts the volume level of the LINE/MIC input. Rotate clockwise to increase, counterclockwise to decrease. Set to avoid making the input signal indicator light up red.
   • LINE/MIC input signal indicator (green, red): Lights green for input signal, red for too high input signal level.
   • Output signal indicator (green): Lights green when a signal is outputting from the speaker or line output.

*System mute is a state in which this unit is muted by the control from the transmitting device.

Rear Panel

1. 25V/70V selector switch: Set to match speaker specifications (70V or 25V high-impedance line). Default is "70V".
2. Speaker output terminals: Connect only high-impedance speakers. Output specifications are shown in the table below.

Note: To avoid unit or peripheral device failure when connecting speakers:

• Terminals marked with the ⚠️ symbol are hazardous live; external wiring requires an instructed person.
• Ensure the unit's power is OFF when connecting speakers.
• Check speaker specifications for correct terminal connection.
• Do not connect a speaker that exceeds the rated output.
• Avoid simultaneously connecting 100 V and 25 V/70 V high-impedance line terminals.
• Ensure wiring distance to the furthest speaker is under 500 m (1640.42 ft) using ø0.9 – 1.6 mm cable.

7. External amplifier input terminals

Used to connect a high-impedance speaker line from an external amplifier. Various control functions allow external amplifier output from the speaker connected to the unit.

Note: Please note the following precautions when making connections to avoid failure or damage:

• Before connecting the external amplifier, ensure the unit's power is OFF.
• Avoid simultaneously connecting both the 100 V high-impedance line and the 25 V/70 V high-impedance line terminals.

8. Line output terminal

Connects with an external amplifier etc. and outputs the same audio as the speaker output.

9. LINE/MIC input terminal

Connects with a microphone or sound source device. Can be used as an analog audio input in local broadcasting mode, for SIP calls, or for VMS broadcast monitoring. Adjust with the DIP switch (18) according to the output level of the connected device.

10. Mute setting switch

Switch ON to enable the Mute terminals (11). Note: Do not switch ON if no connection is made to the Mute terminals. The unit recognizes a 24 V DC signal from an emergency broadcast as a break state, placing it in perpetual MUTE mode and disabling other broadcasts.

11. Mute terminals

Audio broadcasts can be forcibly muted by inputting a 24 V DC cut-off signal, which also enables the external amplifier via amplifier switching control. Ensure the Mute setting switch (10) is ON when using these terminals.

12. Name label

Product number, product name, manufacturer name, and other information are listed.

13. LAN port

Connect to a PoE+ switching hub using a LAN cable.

14. LINK/ACT indicator (green)

Flashes when data is being sent or received over a network.

15. Control output terminal

Allows control of external equipment in synchronization with the unit operation.

16. Functional ground terminal

If excessive noise is produced when the speaker is connected to external equipment, connect this terminal to the external equipment's functional ground terminal to potentially minimize noise. Note: This terminal is not for protective ground.

17. Control input terminals

Allows input of control signals from connected external equipment to enable actions set in the Event settings.

18. DIP switch

• LINE/MIC switch (Switch 1): Set to MIC for microphone, LINE for other sound source devices. Default: LINE.
• PAD switch (Switch 2): Enables or disables the MIC input pad. Set to -20 dB for high input levels. Default: 0 dB.
• PHANTOM switch (Switch 3): Set whether to supply phantom power (12 V DC) to the microphone connected to MIC IN. Default: OFF.

Bottom Panel

19. Rubber feet attachment position
20. Reset key: The unit begins to restart when this key is clicked. Hold down this key until the Status indicator (1) lights yellow to initialize the unit's settings.

7. Handling Precautions

• Please apply the latest firmware version to this product. The latest version is available at the TOA DATA Library (https://www.toa-products.com/international/).
• As this product is IP-based, a slight time lag between actual and broadcast may happen.
• Broadcast audio may sometimes break up due to packet loss or network failure.
• Periodic inspection and manual rebooting are needed to extend the product life.
• This product may reboot automatically to keep the stable operation.

8. Unit Mounting

It is recommended to install it as shown in the example below.

Putting on the desk

Can be used on a desktop by attaching the accessory rubber foot to the bottom of this unit.

Mounting on the wall

Can be used mounting on the wall by the optional bracket MB-15B to the side of this unit. Use the 4 screw holes located on each side of the unit to fix it using the screws supplied with the optional bracket.

Note: Use metal fittings of sufficient strength and install in a place with sufficient strength.

Rack Mounting

Can be rack-mounted by using the optional bracket MB-15B-BK to the side of this unit.

Notes:

• Use the screws supplied with the MB-15B-BK Bracket to attach the bracket to the unit.
• The MB-15B-J Joint Rack Mounting Brackets cannot be used to connect 2 units together.

9. Connections

9.1. Network Connection

Connect the IP-A1PA12 to the PoE+ switching hub using a LAN cable (straight UTP or STP cable, both rated at Category 5e or greater and fitted with RJ45 connectors).

Compatible switching hubs: Switching hubs conforming to PoE+ (IEEE802.3at Class 4) specifications.

9.2. Connections to Speaker Output and External AMP Input Terminals

Use the supplied removable terminal plugs (4 pins) for connection. Use a speaker cable to connect the speakers or external amplifier. For connection of the removable terminal plugs, see "Removable Terminal Plug Connections" on p. 15.

Note: Please take note of the following precautions when making connections in order to avoid failure of the unit or peripheral devices.

• The terminals marked with the ⚠️ symbol are hazardous live. The external wiring to these terminals requires installation by an instructed person.
• Take care that power to the unit is switched OFF while performing speaker or external amplifier connections.
• Be sure to check speaker specifications to ensure correct connection to the proper terminals.
• Do not connect a speaker that exceeds the rated output.
• Avoid simultaneously using both the 100 V high-impedance line and the 25 V/70 V high-impedance line terminals.
• Ensure that the wiring distance to the furthest speaker from the IP Mini-Amp is under 500 m or 1640.42 ft (when ø0.9 – 1.6 mm cable is used).

9.2.1. Amplifier switching control

External amplifier inputs are enabled under the following control conditions:

• Power to the unit is turned OFF.
• The Mute setting switch is ON and the Mute terminal is receiving a 24 V DC cut-off signal.
• System mute in progress.
• Control input in progress (during event setting).
• Control is performed by external command.

Tip: Hardware control refers to control via the power and Mute terminals. Software control signals are not accepted during hardware control.

9.2.2. Symbol

9.3. Connections to LINE/MIC Input and Line Output Terminals

Use the supplied removable terminal plugs (6 pins) for connection. Use a 2-core shielded cable to connect the audio device. For connection of the removable terminal plugs, see "Removable Terminal Plug Connections" on p. 15.

DIP switch settings

Set the DIP switch according to the audio device to be connected.

Note: Please change DIP switch settings while the power is off.

LINE/MIC input level adjustment

Set roughly the volume of individual connected devices by DIP switch. After that, use the LINE/MIC input volume control for fine volume adjustments. Adjust the level so that the LINE/MIC input signal indicator lights green, not red.

Note: Rotate the input volume control screw using an appropriate screwdriver. When rotating, do not press on the screwdriver with too much force, so as to avoid damage to the adjuster.

9.4. Connections to Control Input, Control Output, and Mute Terminals

Use the supplied removable terminal plugs (6 pins or 2 pins) for connection. Connect a control line of 2 channels control input, 1 channel control output, and mute input from the external control device to the unit's control input or control output terminal. For connection of the removable terminal plugs, see "Removable Terminal Plug Connections" on p. 15.

Note: Switch ON the Mute setting switch to enable the Mute terminals.

The following functions can be assigned to the control input and control output terminals by browser settings:

For settings, please refer to the separate receiving device setup manual. The latest version of the setup manual is available on the TOA DATA Library (https://www.toa-products.com/international/).

9.5. Removable Terminal Plug Connections

Please note the following points when making connections to the control input, control output, and speaker output terminals using the supplied removable terminal plugs:

• Do not tin stripped wire ends with solder. Soldered wire ends will be crushed when the terminal plug screws are tightened, leading to higher contact resistance and potentially resulting in an abnormal rise in the temperature of the connected parts.
• Use AWG 24 – 14 wire (ø0.5 – 1.6 mm solid wire or multi-stranded wire with a cross-sectional area of 0.2 – 2.0 mm²).
• Strip the wire end back about 7 mm (0.28").
• When connecting 2 wires or a signal cable to a single terminal, crimp them in an insulated (twin) wire ferrule to prevent their core wires from being separated from one another. Use a ferrule of the dimensions shown in the figure at right.

Plug Connection Procedure

1. Remove the plug from the terminal.
2. Loosen the terminal screw and insert a wire.
3. Tighten the screw firmly. Note: Pull on the wire to ensure that it does not come off.
4. Insert the plug into the terminal.

Tip: Recommended slotted screwdriver is as follows. Blade width: about 2.5 mm (0.1").

10. Settings

10.1. System Settings Summary

The following settings can be performed using a PC browser connected to the same network as the IP audio interface.

For more information, please refer to the separate receiving device setup manual. The latest version of the setup manual is available on the TOA DATA Library (https://www.toa-products.com/international/).

10.2. System Requirements

Notes:

• Windows and Microsoft Edge are registered trademarks of Microsoft Corporation of the United States in the United States and other countries.
• Google Chrome is a trademark of Google LLC of the United States in the United States and other countries.

10.3. Connection with Browser

10.3.1. Connection presets

The IP audio interface is factory-preset as follows:

• Username: admin
• Password: guest
• IP address: 192.168.14.1
• Subnet mask: 255.255.255.0
• Default gateway: 0.0.0.0

Before connecting a PC to the IP Power Amplifier and changing its setting, it will be necessary to set the PC's network settings so that it can operate on the same network as the IP Power Amplifier. Take care that no IP addresses are duplicated in the same network. For example, if the IP Power Amplifier's IP address is 192.168.14.1, set the PC's IP address to 192.168.14.10.

10.3.2. Making connection

Notes:

• Avoid simultaneously connecting to the IP Power Amplifier from multiple PCs.
• Avoid simultaneously connecting to the IP Power Amplifier from a single PC using multiple browsers.

Step 1. Start the browser and enter the speaker's IP address in the address field. The Login screen is displayed.

Step 2. Enter the username and password, and click the LOGIN button. The Status screen is displayed, enabling a range of settings.

Note: For details regarding the setting method, please refer to the separate receiving device setup manual. The latest version of the setup manual is available on the TOA DATA Library (https://www.toa-products.com/international/).

11. Initialization of Settings

Follow the procedure below to return all unit settings to their default:

Tip: When initialized with the reset key, the unit's sound source files are left in "Media," not deleted. Initialization to factory defaults, including deletion of sound source files, should be performed using the browser settings menu.

Step 1. Connect the speaker to the PoE+ switching hub using a LAN cable. The unit will be started.

Step 2. Hold down the reset key located on the bottom panel using a pointed tool. The unit automatically restarts and settings initialization begins.

Tip: Clicking on the reset key causes the unit to be restarted. If pressure on the reset key is released part way through the initialization process, only unit restart will be performed, and the settings will not be initialized. To click on the reset key, use a tool that is thinner than ø1.5 mm (0.06") and longer than 5 mm (0.2").

Step 3. When the status indicator lights yellow, release the reset key. When initialization is complete, the status indicator lights green and all settings will be initialized to their default settings.

[Default Settings]

• Username: admin
• Password: guest
• IP address: 192.168.14.1
• Subnet mask: 255.255.255.0
• Default gateway: 0.0.0.0

12. Cautions Regarding the AVC/H.264 Patent License

TOA's IP-A1PA12 IP Power Amplifier employs MPEG technology (AVC/H.264 Standard) regarding the handling of image information. TOA Corporation has received approval to use this technology from MPEG LA, LLC, the patent management group.

Please note that the use of this product is prohibited except the following cases:

The use of the product is intended for personal use of a user of the MPEG technology and also for non-profit use, which includes (i) video encoding conforming to the AVC/H.264 Standard (hereinafter referred to as "AVC/H.264") and/or (ii) personal use and decoding of AVC/H.264 encoded by an MPEG technology user engaged in non-profit activities and/or AVC/H.264 furnished by a video provider who is granted a license by MPEG LA, LLC.

Regarding use for sales promotion or commercial purposes, or additional licensing information, please contact MPEG LA, LLC (https://www.mpegla.com).

13. Open Source Software

This product uses software based on open source software license(s). If you need further information about the original open source software including source code, please download it from the TOA DATA Library (https://www.toa-products.com/international/). Please note that we cannot answer any questions about the contents of the original source code.

This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit (http://www.openssl.org/).

This product includes cryptographic software written by Eric Young (eay@cryptsoft.com).

14. Accessories

• Removable terminal plug (6 pins, preinstalled on the unit)
• Removable terminal plug (2 pins, preinstalled on the unit)
• Removable terminal plug (4 pins, preinstalled on the unit)
• Rubber foot
• Screw 3 x 6

Tip: The specifications of this product are available in TOA DATA Library (https://www.toa-products.com/international/). Scan the QR Code at right with your mobile phone camera to access the WEB site and search for this product number (IP-A1PA12).