OSD NERO XA7180 - Home Theater Amplifier Manual

IMPORTANT SAFETY PRECAUTIONS

This manual contains important instructions for the safe operation of the unit. Read and follow the safety instructions and all other instructions. Keep the manual for future reference. Make sure that it is available to all those using the device. If you sell the unit, please make sure that the buyer also receives this manual.

• Use only an approved power cable and plug or distribution board to connect your amplifier to a power outlet. Do not use an extension cable.
• Never touch the mains plug if your hands are wet.
• Do not attempt to open the equipment. Refer servicing and repair to qualified service personnel. Touching live components inside the case can result in a fatal electrical shock!
• Read the Owner's Manual and Safety Precautions before operating the equipment.
• Keep this Manual in a safe place so that you can refer to it later.
• Please heed all warnings on the equipment itself and in the Owner's Manual.
• Please follow the instructions contained in your Owner's manual and never use this equipment for any purpose other than is explained in this Owner's Manual.
• Only connect this equipment to a power source of the type described in the Owner's Manual and specified for this equipment.
• Make sure that there is adequate ventilation around the equipment to allow proper cooling. Keep the equipment away from direct sunlight. Avoid installing the unit close to sources of heat or in spaces such as bookshelves or cupboards where heat radiation may be obstructed. Avoid excessive temperatures in the room, as these could ultimately damage sensitive components and reduce the service life of your player.
• Never use the unit in damp rooms, at temperatures of below 15°C, or in the open air. When bringing your amplifier in from the cold, allow it time to achieve room temperature before plugging it in.
• Always switch the unit off before removing or inserting interconnects. Doing this with the amplifier switched on can damage not only the amplifier itself but also equipment connected to it.
• If you ever spill water or any other liquid onto the equipment: Do not touch the case! Remove the plug from the wall outlet and contact your dealer or our service department.
• Never remove the earth connection from the plug. It is there to ensure your safety.
• Arrange the power cable so that no one can accidentally stand on it. Avoid locating it under objects that might put pressure on the cable. Pay particular attention to areas where the cable exits from plugs, AC outlets and from the unit itself.
• Never operate the unit without being present. Disconnect the plug from the wall outlet and remove all aerial connections (including cable aerials) when: you clean the unit, you do not expect to use the unit for long periods of time, during an electrical storm.
• If you have an external antenna or cable antenna connected to your hi-fi system, we recommend that you use a signal isolating filter to avoid interference or damage during thunderstorms.
• Problems: If you lose the sound while the amplifier is operating, or if you notice smoke or burning, switch the unit off immediately and contact your dealer or our service department. Problems:
• Only replace defective fuses after you have traced and removed the cause of the fault and then only with a fuse of the same rating. Remove the mains plug before changing fuses. Use an insulated screwdriver to remove and replace the fuse.

You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment. Properly shielded and grounded cables and connectors must be used for connection to host computers and/or peripherals in order to meet FCC emission limits. To reduce the risk of electric shock, the speaker cable should be connected to the apparatus and the speakers in accordance with the following instructions.
DO NOT defeat the safety purpose of a grounding or polarized plug by removing ground pins or using unsafe adapters. A polarized plug has two blades - one wider than the other. A grounding plug has a third ground prong in addition to the two main conductors. The wide blade or third grounding prong is provided for your safety. If the provided plug does not fit your outlet, consult an electrician to replace your obsolete outlet. If you replace the power cord, only use one of similar type and equal or greater current rating.

Protective earthing terminal(For class I apparatus with earthing). The apparatus should be connected to a mains socket outlet with a protective earthing connection.

Correct Disposal of this product. This marking indicates that this product should not be disposed with other house-hold wastes throughout the EU. To prevent possible harm to the environment or human health from uncontrolled waste disposal, recycle it responsibly to promote the sustainable reuse of material resources. To return your used device, please use the return and collection systems or contact the retailer where the product was purchased. They can take this product for environmental safe recycling.

WARNING SYMBOLS

	TYPE OF DANGER: Danger Zone
	TYPE OF DANGER: High Voltage
	Hazardous Voltage Hazardous voltage may be present at cable ends and screw terminals. The connection of screw terminals as well as all maintenance and repair work on the electrical installation of the device must only be performed by qualified electrical personnel in volt-free-condition. Failure to do so may result in electric shock and risk of fire and loss of life. By all means you have to observe all electrical safety instructions applicable at the place of operation.
	Electric shock caused by short-circuit Always use proper ready-made insulated mains cabling (power cord) with a protective contact plug. Do not modify the mains cable or plug. Failure to do so could result in electric shock/death or fire. If in doubt, seek advice from a registered electrician.

Always use proper ready-made insulated mains cabling (power cord) with a protective contact plug. Do not modify the mains cable or plug. Failure to do so could result in electric shock/death or fire. If in doubt, seek advice from a registered electrician.

This product has been tested by ETL and has been found to be complying with:

• Audio/Video, Information And Communication Technology Equipment - Part 1: Safety Requirements [UL 62368-1:2014 Ed.2]
• Audio/Video, Information and Communication Technology Equipment - Part 1: Safety Requirements (R2019) [CSA C22.2#62368-1:2014 Ed.2]

The mains plug/appliance coupler is used as disconnect device, the disconnect device shall remain readily operable.

1. Disconnect the AC power cord from the MAINS.
2. Strip 10 to 15 mm of the wire insulation of the speaker cable.
3. Connect the speaker cable to the apparatus and the speakers carefully so as not to touch the core of speaker cable by hand. Also disconnect the AC power cord from the MAINS before disconnecting the speaker cable from the apparatus and the speakers.

REAR PANEL

1. Audio Inputs
   Inputs for connecting the XA Amplifier to the outputs of an AVR, pre-pro, or other devices.
2. Remote Trigger Input
   Power On/Off using 8-24v signal from connected device, such as AVR, control system or processor.
3. ON/Trigger Power Switch
   In ON position: the Power switch on the front panel turns the XA Amp on and off.
   In TRIGGER position: the XA can be turned on and off remotely by a device connected to the REMOTE TRIGGER jack. In this mode, the LED's on the front panel will glow yellow when the amplifier is in standby mode, and bright blue when powered on.
4. Speaker Outputs
   5-way binding posts used to connect the XA Amp to your speakers.
5. AC Fuse
   Protects in case of a power surge.
6. AC Input
   Use the supplied power cord to plug the XA amp in.

To avoid damage to the XA amp or connected devices, please turn off and unplug the XA amp before making any changes to the wiring.
Failure to do so can potentially result in severe damage to your amplifier & loudspeakers

SPEAKER & INPUT CONNECTIONS

Connecting your speakers

Use Class 2 wiring for speaker connections.
Wiring the speaker connector with bare wire:

1. Strip the insulation o ff each speaker wire to expose 3/8" (10 mm) of bare conductor.
2. Unscrew the output terminal binding post several twists, insert each wire into the correct terminal.
3. Tighten binding post by twisting clock-wise until it is firmly clamping the speaker wire.
4. For spades or banana plugs, simply insert in correct terminals.
5. Ensure + terminal goes to + terminal of speakers and – goes to – do this by checking the marking on the speaker wire. Usually, RED wire is +

While the amplifier does self-protect under most improper output conditions, misconfiguration of loudspeaker mode and incorrect connection of loudspeakers could damage connected loudspeakers and/or amplifier.
Please refer installation to a qualified installation professional, and always check state and local electrical codes when installing.

Power Options

There are 3 options for controlling the power ON/OFF

1. Select ON if you want to turn the amp on front the front panel power switch
2. The XA amps can also be powered on automatically by other devices equipped with a 12v trigger output: Select TRIGGER position. When the switch is set to TRIGGER, the XA amp will turn on when a 12v signal is present and go into standby when there is no signal present.
   Note: If you set the ON/SIGNAL/TRIGGER switch to Trigger, but don't connect the XA Amp to another device, the status LED's will be bright blue, but the amplifier will not respond if you press the power button.
3. You can also turn your amp ON when it senses a signal though the RCA or XLR inputs. Select the SIGNAL option and the amp will turn on when a signal is sensed and go into standby when no signal is sensed.

AMPLIFIER OPERATION AND MAINTENANCE

Before you begin

Please check the voltage label beneath the power socket and confirm it is correct for your country's voltage. Voltage is not end-user selectable.

For 120v operation: Ensure that the amp is plugged into a 120v 15 Amp power socket. At full power the amp will require in excess of 10 Amps.
For 230v operation: Ensure that the amp is plugged into a 230v 13 Amp power socket. At full power the amp will require in excess of 6.5 Amps.

Ensure the amp has air clearance with nothing covering the ventilation slots. 6 inches of clearance is recommended, or, if rack mounted, please use a cooling fan.

Double-check all connections from connected processors or AVR 's, and connections to speakers. Make sure all connections are good and that there are no stray wires, or strands of wire.

Tip - If speaker wires are running through walls or ceiling, you can check that the speaker wires are connected correctly by taking a 9V battery and momentarily touching the speaker wire to the + and – terminals. If the speakers are connected there will be a small 'popping' sound. Turn the volume level of the connected Processor or AVR down to zero for all channels.

Power-on - Normal Operation

Press the front panel switch labeled POWER. After a short pause the front panel LED indicators will light-up.

Individual channel, power status indicators

Front Panel Status LEDs
Power: Bright Blue
Standby: Yellow
Protection: Red

Power:
Blue Lights – The amp is on and working correctly

Standby:
Yellow/Orange light – The amp is in standby mode, no signal to speakers, no sound.

Protection:
Red Light – The amp has automatically detected a problem and is in protection mode to prevent damage to speakers. Turn amp off, unplug and check speaker connections for short circuits (positive and negative wires touching).

Power-on - auto signal detecting mode
Press the front panel switch labeled POWER. After a short pause the front panel LED indicators will light-up.
When the SIGNAL position is selected the front panel indicator lights will be Yellow/Orange if there is no signal from the connected Processor or AVR. When a signal from any channel is present the indicator lights for that channel will turn to Blue and the speaker will play that signal.

Power-on – Trigger
Press the front panel switch labeled POWER. After a short pause the front panel LED indicators will light-up.
When the rear panel switch is set to TRIGGER the front panel indicator lights will be Yellow/Orange and the amp will be in Standby mode. When a TRIGGER signal is present the amp will turn on and the indicator lights will be Blue. The amp will stay on as long as there is a TRIGGER signal present. When the TRIGGER signal is removed, the amp will return to Standby and the front panel indicator lights will go to Yellow/Orange.

To turn Off
Press the front panel switch labeled POWER, all lights will turn off.

Maintenance

If the amp requires cleaning, wipe with a clean, dampened soft cloth. Do not use chemicals and remove any moisture. Do not use abrasive cleaners, as they may damage the paint. Do not expose the amp to insecticide, waxes, polishing agents, or an aerosol spray as moisture may enter the amp.

Service Information

Should you encounter any problems with your XA amplifier please reset the power by switching off and un-plugging the amp. Re-check all connections from Processors or AVR's and to the speakers. Turn on the amp again and refer to the 'Amplifier Operation and Maintenance' instructions. If a problem still exists, contact OSD Nero's customer service department at OSDAUDIO.COM.

Performance Specs

General Specs