nuLine 34

Safety Instructions

• Turn off the amplifier before connecting the speaker cables.
• Ensure the speaker cables are securely connected.
• Place the speakers only in a dry location.
• Do not expose the speakers to direct sunlight.
• Ensure stable mounting when using stands or wall mounts.
• Overloading: The nuLine 34 features internal fuses to protect against amplifier overload. At high volumes, weak amplifiers can cause distortion that places extreme stress on the tweeters. Reduce the amplifier's volume if the sound becomes distorted.

Connection Instructions

Ensure that your amplifier/receiver is turned off before connecting the speakers. Refer to your amplifier/receiver's user manual for specific connection instructions.

Bi-Amping

Caution!

Do not forget to remove the bridges on the connection terminal! In bi-amping, bass/midrange and treble areas are supplied with separate signals. This setup requires a preamplifier and two stereo power amplifiers: one for the bass/midrange and one for the treble range. Bi-amping can result in better driver control and improved precision. However, the effort and results should be carefully considered.

Care and Cleaning Tips

Caution!

Improper handling of the speaker may result in damage.

• Turn off your amplifier before cleaning the speaker and disconnect the speaker cables from the terminal if necessary.
• Before resuming operation, ensure that all connections are correct, no short circuits exist, and the speaker is completely dry.
• Never use harsh cleaning agents or solvents such as gasoline, alcohol, or similar substances.

Cabinet

We recommend using a standard glass cleaner sprayed onto a cotton cloth for cleaning. This will effectively remove fingerprints and dirt. Alternatively, you can use window cleaning foam. Avoid using microfiber cloths as they may cause micro-scratches. For veneered cabinets, we recommend using appropriate furniture care products.

Membranes and Speaker Drivers

Use a lint-free cotton cloth with gentle pressure to remove dust from the speaker driver. The tweeters in Nubert speakers are protected by a grille and can also be gently wiped clean. For stubborn dust, a makeup brush can be used.

nuLine CS-64

Safety Instructions

• Turn off the amplifier before connecting the speaker cables.
• Ensure that the speaker cables are securely connected.
• Place the speaker only in a dry location.
• Do not expose the speaker to direct sunlight.
• Overload: The nuLine CS-64 is equipped with internal fuses to protect against amplifier overload. However, note that even a weak amplifier can endanger a speaker. At high volume levels, weak amplifiers tend to distort, which can severely stress the tweeters. If the sound begins to distort at a certain point, please reduce the volume setting on the amplifier.

Cold Weather and Sound

If speakers are shipped and delivered during the cold season, they must acclimate to room temperature before use. Low temperatures significantly affect the moving parts of a speaker box, such as the diaphragm/voice coil, surround, and centering spider. These components’ ability to respond to quick vibrations or make large excursions is greatly reduced. While this is not dangerous, "frozen" speakers are far from their acoustic peak performance. Our tip: If your new speakers arrive on a cold winter day, give them a few hours to acclimate. Your Nubert speakers will reward you with the superior sound quality you rightly expect from us.

Connection Instructions

Ensure that your amplifier/receiver is turned off before connecting the speakers. Refer to your device's user manual for instructions on how to connect the speakers to the amplifier/receiver.

Care and Cleaning Tips

Caution!

Improper handling of the speaker can cause damage.

• Turn off your amplifier before cleaning the speaker and, if necessary, disconnect the speaker cables from the terminal!
• Ensure that all connections are correct, no short circuits are present, and the speaker is completely dry before using it again!
• Do not use harsh cleaning agents or solvents such as gasoline or alcohol!

Housing

We recommend using standard glass cleaner sprayed onto a cotton cloth. This effectively removes fingerprints and dirt. Alternatively, you can use foam-based glass cleaners. Avoid using microfiber cloths, as they may cause micro-scratches on the surface. For veneered housings, we recommend using suitable furniture care products.

Membranes and Speaker Chassis

To remove dust from a speaker chassis, use a lint-free cotton cloth and gently wipe the membrane with very light pressure. The tweeters on all Nubert speakers are equipped with a protective grille, allowing them to be wiped gently as well. If the dust cannot be completely removed, a makeup brush from a drugstore is suitable.

nuLine WS-14

Safety Instructions

• Turn off the amplifier before connecting the speaker cables.
• Ensure the speaker cables are securely connected.
• Place the speaker only in a dry location.
• Do not expose the speakers to direct sunlight.
• Overload: The nuLine WS-14 has internal protections against amplifier overload. However, it should be noted that even a weak amplifier can damage a speaker. At high volume levels, weak amplifiers tend to distort, which places extreme stress on the tweeters. If the sound reproduction becomes distorted at a certain point, please reduce the volume on your amplifier.

Connection Instructions

Please ensure that your amplifier/receiver is turned off before connecting the speakers. Refer to your device's user manual for detailed instructions on connecting the speakers to the amplifier/receiver.

Care and Cleaning Tips

Warning!

Improper handling of the speaker may cause damage.

• Turn off your amplifier before cleaning the speaker and disconnect the speaker cables from the terminals if necessary!
• Before resuming operation, ensure all connections are correct, no short circuits are present, and the speaker is completely dry!
• Do not use harsh cleaning agents or solvents such as gasoline, alcohol, or similar substances!

Cabinet

We recommend using a commercial glass cleaner sprayed onto a cotton cloth. This easily removes most fingerprints and dirt. Alternatively, you can use active foam window cleaners. We advise against using microfiber cloths as they can cause small scratches on the surface. For veneered cabinets, we recommend suitable furniture care products.

Diaphragms and Speaker Chassis

To remove dust from a speaker chassis, use a lint-free cotton cloth to gently wipe the diaphragm with minimal pressure. The tweeters of all Nubert speakers are equipped with protective grilles, allowing them to also be wiped gently. If the dust cannot be completely removed, a makeup brush from a drugstore works well.

nuLine RS-54

Safety Instructions

• Turn off the amplifier before connecting the speaker cables.
• Ensure the speaker cables are securely connected.
• Place the speakers only in a dry location.
• Do not expose the speakers to direct sunlight.
• Overloading: The nuLine RS-54 features internal fuses to protect against amplifier overload. However, note that even a weak amplifier can endanger a speaker. At high volumes, weak amplifiers tend to distort, which places extreme stress on the tweeters. If the sound becomes distorted at a certain volume level, reduce the amplifier's volume setting.

Cold Weather and Sound

If speakers are shipped and delivered during the cold season, they must acclimate to room temperature. Low temperatures significantly affect the moving parts of a speaker box, such as the diaphragm/voice coil, surround, and spider. These components' ability to follow rapid vibrations or make large excursions is severely limited. While not dangerous, "deep-frozen" speakers will not perform at their best acoustically. Our advice: If your new speakers arrive on a cold winter day, give them a few hours to acclimate. Your Nubert speakers will reward you with the outstanding sound quality you rightly expect from us.

Connection Instructions

Ensure that your amplifier/receiver is turned off before connecting the speakers. Refer to your amplifier/receiver's user manual for specific connection instructions.

Wall Mounting

Use screws appropriate for your wall type and ensure they are securely fastened to prevent the speaker from falling. Drill horizontal holes in the wall with a spacing of 90 mm. Also, ensure there is a few millimeters of extra space above the mounting screws so the speaker can be hung and locked onto them securely.

nuSub XW-800 Slim

Safety Instructions

The entire operating manual, in particular the safety instructions, must be read in full before connecting and commissioning the device. For your own safety, be sure to follow all warnings and safety instructions in this manual and on the speaker. The user is not permitted to carry out any work on the loudspeaker other than the described work. Keep this document so that you have access to it at all times. Furthermore, it must also be handed over to possible re-owners.

Intended Use

This speaker is designed exclusively for sound reproduction in dry rooms. Use the speaker only as described in this manual. Any other use (particularly safety-relevant or medical use, installation in open environments like IP-certified products) is considered improper and may result in property damage or even personal injury. Nubert electronic GmbH does not assume any liability for damages caused by improper use.

General Information

Never Operate the Loudspeaker Unattended!

Danger of Electric Shock!

To avoid the risk of electric shock, the speaker may not be opened by the user. There are no user-serviceable parts inside the speaker. Service work and repairs are reserved for qualified specialists authorized by Nubert. If you need service, please contact Nubert electronic GmbH directly (info@nubert.de)!

Danger of Suffocation!

Never let children use or play with the speaker, remote control, or packaging unattended. There is a risk that children will get caught in the packaging film and suffocate. Make sure that children cannot remove any small parts from the devices! These parts, like the remote control battery, could be swallowed and cause suffocation. In case of swallowing any parts, contact a doctor immediately!

Danger of Injury or Damage!

When moving the speaker, take care to avoid injury and damage!

Caution!

Since the speaker can only be completely disconnected from the mains at the mains input on the rear of the unit or by pulling the mains plug from the socket, it must be positioned so that you have free access to the mains input or mains plug. If any of the following situations occurs, the loudspeaker must be switched off immediately and disconnected from the mains. Contact Nubert electronic GmbH (info@nubert.de) immediately:

• The speaker has been damaged or has fallen down.
• Power cord or plug is damaged.
• Objects or liquid have got into the loudspeaker.
• The speaker has been exposed to excessive moisture or rain.
• The speaker does not work properly or exhibits a significant reduction in performance.
• The loudspeaker smells burnt, develops smoke, or makes unusual noises.

Caution!

The driver in this loudspeaker produces a strong magnetic field in its immediate vicinity that can affect or damage other equipment close by. It is therefore imperative that you keep magnetically sensitive devices and items away from the loudspeaker. Never place CRT screens, notebooks, hard drives, or similar devices on the loudspeakers!

Only use accessories recommended by Nubert!

Installation Instructions

Caution!

An unstable location can damage the speaker.

• Only place the loudspeaker on a flat, stable surface and make sure that it cannot be knocked over!
• Also make sure that no unintentional pulling can occur on the cables to avoid knocking over the speaker or damaging the connection sockets!
• Keep strong mechanical shocks away from the loudspeaker!

Caution!

Excessive heat build-up inside the unit can shorten its service life or lead to fire.

• Never cover the back of the speaker! Make sure that there is a clearance of at least 10 cm and sufficient air circulation in the back area!
• Do not operate the speaker and remote control near heat sources such as radiators or stoves!
• Do not set the speaker and remote control to direct sunlight.
• Never place burning candles or similar open fire sources on the loudspeaker!

Danger of Explosion!

Installation in unsuitable locations can cause explosions. Do not use the speaker or remote control:

• In environments where there is a risk of fire or explosion.
• At extremely low or extremely high temperatures.
• Near flammable gases or vapours.
• Near strong dust or flammable materials.

Danger of Electric Shock!

The loudspeaker carries mains voltage and voltages higher than 35 V AC or DC inside. It has no special protection against the intrusion of liquids or objects into the system. There is therefore a risk of lethal electric shock.

• Never touch the speaker with wet hands!
• Only use the speaker in a dry place!
• Do not operate it outdoors or in damp rooms!
• Do not place any containers containing liquids (e.g. flower vases) on the speaker or in the immediate vicinity!
• If the loudspeaker is moved from a cold environment to a warm room, wait at least six hours for it to reach room temperature and dry before switching it on!
• Should the loudspeaker come into contact with liquids or objects get inside, unplug the mains plug immediately and contact Nubert electronic GmbH!

Danger of Injury or Damage!

The threaded bushings on the bottom of the speaker may only be used as described in the quick start guide! They are not designed for tensile loads perpendicular to the bottom of the housing and must therefore not be used as a mounting point for hooks or similar appliances to suspend the box from the ceiling. A falling speaker may cause serious injury and damage.

Connection Instructions

General Connection Instructions

• Disconnect the mains plug before changing any wiring on the system!
• Make sure that all connections have been made correctly and that all plugs are firmly seated in the sockets before connecting the speaker to the mains.
• Use only the intended cables or plug connections for the connections! Failure to do so may result in damage or malfunction.
• If you want to disconnect connections on the loudspeaker, always pull the plug, never the cable!
• Ensure that all plugs are firmly seated in the sockets!
• Only use cables and accessories recommended by Nubert!

Danger of Electric Shock!

Faulty mains supply systems or excessive mains voltage can lead to electric shocks.

• All power supply or antenna systems connected to the loudspeaker must comply with applicable laws and regulations and be professionally installed by an approved installation company.
• Use only the appropriate power cord to connect the speaker. Do not modify the power cord or its plug.
• Make sure that the mains voltage at your location matches the speaker's requirements. The correct power supply can be found on the label on the back of the speaker. It must not be connected to other power supplies.
• Devices of Class 1 construction must be connected to a mains power socket outlet with a protective earth connection. Ensure proper installation of the protective earth!

Caution!

Overvoltage in the power supply system (e.g. due to lightning) can damage or destroy the device and power supply unit.

• An overvoltage protection element can provide some degree of protection against excessively high voltages in the power grid.
• The greatest protection can only be achieved by completely separating from the mains supply. In case of thunderstorms or lightning strikes, disconnect the mains cable from the socket and any antenna plugs from your hi-fi system!
• If the speaker is unused for a long time or unattended, disconnect the power supply. Unplug the mains cable from the socket!

Care and Cleaning Tips

Caution!

Improper handling of the speaker may result in damage.

• Always unplug the speaker before cleaning it!
• Before recommissioning, make sure that all connections are correct, that there are no short circuits, and that the speaker is completely dry.
• Never use strong cleaning agents or solvents such as petrol, spirit, or similar!

Enclosure

We recommend commercial window cleaner sprayed onto a cotton cloth. This allows almost all fingerprints and dust to be easily removed. Alternatively, you can also use window active foam.

Note: We advise against the use of microfibre cloths! These can cause mini scratches in the surface.

Diaphragms and Speaker Chassis

To remove dust from a loudspeaker chassis, a lint-free cotton cloth is sufficient to wipe the membrane lightly with very little pressure.

nuSub XW-900

Safety Instructions

The entire operating manual, in particular the safety instructions, must be read in full before connecting and commissioning the device. For your own safety, be sure to follow all warnings and safety instructions in this manual and on the speaker. The user is not permitted to carry out any work on the loudspeaker other than the described work. Keep this document so that you have access to it at all times. Furthermore, it must also be handed over to possible re-owners.

Intended Use

This speaker is designed exclusively for sound reproduction in dry rooms. Use the speaker only as described in this manual. Any other use (particularly safety-relevant or medical use, installation in open environments like IP-certified products) is considered improper and may result in property damage or even personal injury. Nubert electronic GmbH does not assume any liability for damages caused by improper use.

General Information

Never Operate the Loudspeaker Unattended!

Danger of Electric Shock!

To avoid the risk of electric shock, the speaker may not be opened by the user. There are no user-serviceable parts inside the speaker. Service work and repairs are reserved for qualified specialists authorized by Nubert. If you need service, please contact Nubert electronic GmbH directly (info@nubert.de)!

Danger of Suffocation!

Never let children use or play with the speaker, remote control, or packaging unattended. There is a risk that children will get caught in the packaging film and suffocate. Make sure that children cannot remove any small parts from the devices! These parts, like the remote control battery, could be swallowed and cause suffocation. In case of swallowing any parts, contact a doctor immediately.

Danger of Injury or Damage!

When moving the speaker, take care to avoid injury and damage!

Caution!

Since the speaker can only be completely disconnected from the mains at the mains input on the rear of the unit or by pulling the mains plug from the socket, it must be positioned so that you have free access to the mains input or mains plug. If any of the following situations occurs, the loudspeaker must be switched off immediately and disconnected from the mains. Contact Nubert electronic GmbH (info@nubert.de) immediately:

• The speaker has been damaged or has fallen down.
• Power cord or plug is damaged.
• Objects or liquid have got into the loudspeaker.
• The speaker has been exposed to excessive moisture or rain.
• The speaker does not work properly or exhibits a significant reduction in performance.
• The loudspeaker smells burnt, develops smoke, or makes unusual noises.

Caution!

The driver in this loudspeaker produces a strong magnetic field in its immediate vicinity that can affect or damage other equipment close by. It is therefore imperative that you keep magnetically sensitive devices and items away from the loudspeaker. Never place CRT screens, notebooks, hard drives, or similar devices on the loudspeakers!

Only use accessories recommended by Nubert!

Installation Instructions

Caution!

An unstable location can damage the speaker.

• Only place the loudspeaker on a flat, stable surface and make sure that it cannot be knocked over!
• Also make sure that no unintentional pulling can occur on the cables to avoid knocking over the speaker or damaging the connection sockets!
• Keep strong mechanical shocks away from the loudspeaker!

Caution!

Excessive heat build-up inside the unit can shorten its service life or lead to fire.

• Never cover the back of the speaker! Make sure that there is a clearance of at least 10 cm and sufficient air circulation in the back area!
• Do not operate the speaker and remote control near heat sources such as radiators or stoves!
• Do not set the speaker and remote control to direct sunlight.
• Never place burning candles or similar open fire sources on the loudspeaker!

Danger of Explosion!

Installation in unsuitable locations can cause explosions. Do not use the speaker or remote control:

• in environments where there is a risk of fire or explosion!
• at extremely low or extremely high temperatures!
• near flammable gases or vapours!
• near strong dust!
• near flammable materials!

Danger of Electric Shock!

The loudspeaker carries mains voltage and voltages higher than 35 V AC or DC inside. It has no special protection against the intrusion of liquids or objects into the system. There is therefore a risk of lethal electric shock.

• Never touch the speaker with wet hands!
• Only use the speaker in a dry place!
• Do not operate it outdoors or in damp rooms!
• The loudspeaker must be protected from liquids of all kinds, including dripping and splashing water.
• Do not place any containers containing liquids (e.g., flower vases) on the speaker or in the immediate vicinity!
• If the loudspeaker is moved from a cold environment to a warm room, condensation may form inside the unit. Wait at least six hours until the loudspeaker has reached room temperature and is dry before switching it on!
• No objects or foreign bodies may get into the device.
• Should the loudspeaker come into contact with liquids or should objects have got inside, please unplug the mains plug immediately and contact Nubert electronic GmbH (info@nubert.de)!

Danger of Injury or Damage!

For speakers with threaded bushings on the underside:

• The threaded bushings may be used for upright mounting of the loudspeaker on suitable base plates only.
• The threaded bushings on the underside of the loudspeaker enclosures are not designed for tensile loads and must therefore not be used as holders for hooks or similar devices in order to suspend the loudspeaker cabinet.
• A falling speaker may cause serious injury and damage.

Connection Instructions

General Connection Instructions

• Disconnect the mains plug before changing any wiring on the system!
• Make sure that all connections have been made correctly and that all plugs are firmly seated in the sockets before connecting the speaker to the mains.
• Use only the intended cables or plug connections for the connections! Failure to do so may result in damage or malfunction.
• If you want to disconnect connections on the loudspeaker, always pull the plug, never the cable!
• Ensure that all plugs are firmly seated in the sockets!
• Only use cables and accessories recommended by Nubert!

Danger of Electric Shock!

Faulty mains supply systems or excessive mains voltage can lead to electric shocks.

• All power supply or antenna systems connected to the loudspeaker must comply with all applicable laws and regulations and be professionally installed by an approved installation company.
• Use only the appropriate power cord to connect the speaker. Do not modify the power cord or its plug.
• Make sure that the mains voltage at your location matches the requirements of the loudspeaker! The correct power supply can be found on the label on the back of the speaker. It must not be connected to other power supplies.
• Devices of Class 1 construction must be connected to the mains power socket outlet with a protective earth connection. Make sure that the installation of the protective earth is carried out correctly!
• When laying the power cables, make sure that they cannot be damaged (e.g., by heating or mechanical stress)! Pay particular attention to the areas of the connectors and distributors!

Caution!

Overvoltage in the power supply system (e.g., due to lightning) can damage or destroy the device and power supply unit.

• An overvoltage protection element can provide a certain degree of protection against excessively high voltages in the power grid.
• However, the greatest possible protection against damage can only be achieved with the complete separation from the mains supply. In case of thunderstorms or danger of lightning strikes, disconnect the mains cable from the socket and any antenna plugs from your hi-fi system!
• If the speaker is not used for a long period of time or is unattended, the power supply should be disconnected. Disconnect the mains plug from the socket!

Care and Cleaning Tips

Caution!

Improper handling of the speaker may result in damage.

• Always unplug the speaker before cleaning it!
• Before recommissioning, make sure that all connections are correct, that there are no short circuits, and that the speaker is completely dry.
• Never use strong cleaning agents or solvents such as petrol, spirit, or similar!

Enclosure

We recommend commercial window cleaner sprayed onto a cotton cloth. This allows almost all fingerprints and dust to be easily removed. Alternatively, you can also use window active foam.

We advise against the use of microfibre cloths! These can cause mini scratches in the surface.

Diaphragms and Speaker Chassis

To remove dust from a loudspeaker chassis, a lint-free cotton cloth is sufficient to wipe the membrane lightly with very little pressure.

nuSub XW-1200

Safety Instructions

The entire operating manual, in particular the safety instructions, must be read in full before connecting and commissioning the device. For your own safety, be sure to follow all warnings and safety instructions in this manual and on the speaker. The user is not permitted to carry out any work on the loudspeaker other than the described work. Keep this document so that you have access to it at all times. Furthermore, it must also be handed over to possible re-owners.

Intended Use

This speaker is designed exclusively for sound reproduction in dry rooms. Use the speaker only as described in this manual. Any other use (particularly safety-relevant or medical use, installation in open environment like IP-certified products) is considered improper and may result in property damage or even personal injury. Nubert electronic GmbH does not assume any liability for damages caused by improper use.

General Information

• Never operate the loudspeaker unattended!
• Danger of electric shock! To avoid the risk of electric shock, the speaker may not be opened by the user. There are no user-serviceable parts inside the speaker. Service work and repairs are reserved for qualified specialists authorized by Nubert. If you need service, please contact Nubert electronic GmbH directly (info@nubert.de)!
• Danger of suffocation! Never let children use or play with neither speaker, remote control or packaging unattended. There is a risk that children will get caught in the packaging film and suffocate. Make sure that children cannot remove any small parts from the devices! These parts, like the remote control battery, could be swallowed and cause suffocation. In case of swallowing any parts, contact a doctor immediately.
• Danger of injury or damage! When moving the speaker, take care to avoid injury and damage!
• Caution! Since the speaker can only be completely disconnected from the mains at the mains input on the rear of the unit or by pulling the mains plug from the socket, it must be positioned so that you have free access to the mains input or mains plug.

If any of the following situations occurs, the loudspeaker must be switched off immediately and disconnected from the mains:

• The speaker has been damaged or has fallen down.
• Power cord or plug is damaged.
• Objects or liquid have got into the loudspeaker.
• The speaker has been exposed to excessive moisture or rain.
• The speaker does not work properly or exhibits a significant reduction in performance.
• The loudspeaker smells burnt, develops smoke or makes unusual noises.

Caution!

The driver in this loudspeaker produces a strong magnetic field in its immediate vicinity that can affect or damage other equipment close by. It is therefore imperative that you keep magnetically sensitive devices and items away from the loudspeaker. Never place CRT screens, notebooks, hard drives or similar on the loudspeakers!

Only use accessories recommended by Nubert!

Installation Instructions

Caution!

An unstable location can damage the speaker.

• Only place the loudspeaker on a flat, stable surface and make sure that it cannot be knocked over!
• Also make sure that no unintentional pulling can occur on the cables to avoid knocking over the speaker or damaging the connection sockets!
• Keep strong mechanical shocks away from the loudspeaker!

Caution! Excessive heat build-up inside the unit can shorten its service life or lead to fire.

• Never cover the back of the speaker! Make sure that there is a clearance of at least 10 cm and sufficient air circulation in the back area!
• Do not operate the speaker and remote control near heat sources such as radiators or stoves!
• Do not set the speaker and remote control to direct sunlight.
• Do not expose to direct sunlight!
• Never place burning candles or similar open fire sources on the loudspeaker!

Danger of Explosion!

Installation in unsuitable locations can cause explosions. Do not use the speaker or remote control:

• In environments where there is a risk of fire or explosion!
• At extremely low or extremely high temperatures!
• Near flammable gases or vapours!
• Near strong dust!
• Near flammable materials!

Danger of Electric Shock!

The loudspeaker carries mains voltage and voltages higher than 35 V AC or DC inside. It has no special protection against the intrusion of liquids or objects into the system. There is therefore a risk of lethal electric shock.

• Never touch the speaker with wet hands!
• Only use the speaker in a dry place!
• Do not operate it outdoors or in damp rooms!
• The loudspeaker must be protected from liquids of all kinds, including dripping and splashing water.
• Do not place any containers containing liquids (e.g., flower vases) on the speaker or in the immediate vicinity!
• If the loudspeaker is moved from a cold environment to a warm room, condensation may form inside the unit. Wait at least six hours until the loudspeaker has reached room temperature and is dry before switching it on!
• No objects or foreign bodies may get into the device.
• Should the loudspeaker come into contact with liquids or should objects have got inside, please unplug the mains plug immediately and contact Nubert electronic GmbH (info@nubert.de)!

Danger of Injury or Damage!

For speakers with threaded bushings on the underside:

• The threaded bushings may be used for upright mounting of the loudspeaker on suitable base plates only.
• The threaded bushings on the underside of the loudspeaker enclosures are not designed for tensile loads and must therefore not be used as holders for hooks or similar devices in order to suspend the loudspeaker cabinet.
• A falling speaker may cause serious injury and damage.

Connection Instructions

General Connection Instructions

• Disconnect the mains plug before changing any wiring on the system!
• Make sure that all connections have been made correctly and that all plugs are firmly seated in the sockets before connecting the speaker to the mains.
• Use only the intended cables or plug connections for the connections! Failure to do so may result in damage or malfunction.
• If you want to disconnect connections on the loudspeaker, always pull the plug, never the cable!
• Ensure that all plugs are firmly seated in the sockets!
• Only use cables and accessories recommended by Nubert!

Danger of Electric Shock!

Faulty mains supply systems or excessive mains voltage can lead to electric shocks.

• All power supply or antenna systems connected to the loudspeaker must comply with all applicable laws and regulations and be professionally installed by an approved installation company.
• Use only the appropriate power cord to connect the speaker. Do not modify the power cord or its plug.
• Make sure that the mains voltage at your location matches the requirements of the loudspeaker! The correct power supply can be found on the label on the back of the speaker. It must not be connected to other power supplies.
• Devices of Class 1 construction must be connected to the mains power socket outlet with a protective earth connection. Make sure that the installation of the protective earth is carried out correctly!
• When laying the power cables, make sure that they cannot be damaged (e.g., by heating or mechanical stress)! Pay particular attention to the areas of the connectors and distributors!

Caution!

Overvoltage in the power supply system (e.g., due to lightning) can damage or destroy the device and power supply unit.

• An overvoltage protection element can provide a certain degree of protection against excessively high voltages in the power grid.
• The greatest possible protection against damage can only be achieved with the complete separation from the mains supply. In case of thunderstorms or danger of lightning strikes, disconnect the mains cable from the socket and any antenna plugs from your hi-fi system!
• If the speaker is not used for a long period of time or is unattended, the power supply should be disconnected. Disconnect the mains plug from the socket!

Care and Cleaning Tips

Caution!

Improper handling of the speaker may result in damage.

• Always unplug the speaker before cleaning it!
• Before recommissioning, make sure that all connections are correct, that there are no short circuits and that the speaker is completely dry.
• Never use strong cleaning agents or solvents such as petrol, spirit or similar!

Enclosure

We recommend commercial window cleaner sprayed onto a cotton cloth. This allows almost all fingerprints and dust to be easily removed. Alternatively, you can also use window active foam.

We advise against the use of microfibre cloths! These can cause mini scratches in the surface.

Diaphragms and Speaker Chassis

To remove dust from a loudspeaker chassis, a lint-free cotton cloth is sufficient to wipe the membrane lightly with very little pressure.

Denon AVR-X2800H

Yamaha RX-A2A

Important Safety Precautions

Risk of Serious Injury or Death

If You Notice Any Abnormality

• If any of the following abnormalities occur, immediately turn off the power and disconnect the power plug:
  • The power cord/plug is damaged.
  • An unusual smell, unusual sound, or smoke is emitted from the unit.
  • Foreign material or water gets into the interior of the unit.
  • There is a loss of sound during use.
  • There is a crack or damage in the unit.

  Continued use could cause electric shocks, a fire, or malfunctions. Immediately request an inspection or repair from the dealer where you purchased the unit or from qualified Yamaha service personnel.

Power Supply

• Do not do anything that could damage the power cord:
  • Do not place it near a heater.
  • Do not bend it excessively or alter it.
  • Do not scratch it.
  • Do not place it under a heavy object.

  Using the power cord with the core exposed could cause electric shocks or a fire.

• Do not touch the power plug or cord if there is a chance of lightning.

  Failure to observe this may cause electric shocks.

• Use this unit with the power supply voltage printed on it.

  Failure to connect to an appropriate AC outlet may cause a fire, electric shocks, or malfunctions.

• Be sure to use the supplied power cord.

  Failure to observe this may cause a fire, burns, or malfunctions.

• Do not use the supplied power cord for other units.

  Failure to observe this may cause a fire, burns, or malfunctions.

• Check the electric plug periodically and remove any dirt or dust which may have accumulated on it.

  Failure to observe this may cause a fire or electric shocks.

• When setting up the unit, make sure that the AC outlet you are using is easily accessible.

  If some trouble or malfunction occurs, immediately turn off the power switch and disconnect the plug from the AC outlet. Even when the power switch is turned off, as long as the power cord is not unplugged from the wall AC outlet, the unit will not be disconnected from the power source.

• If you hear thunder or suspect approaching lightning, quickly turn off the power switch and pull the power plug from the AC outlet.

  Failure to observe this may cause a fire or malfunctions.

• If not using the unit for long periods of time, be sure to pull the power plug from the AC outlet.

  Failure to observe this may cause a fire or malfunctions.

Do Not Disassemble

• Do not disassemble or modify this unit.

  Failure to observe this may cause a fire, electric shocks, injury, or malfunctions.

Important Safety Precautions

Water Warning

• Do not expose the unit to rain, use it near water, or in damp or wet conditions. Do not place any containers (such as vases, bottles, or glasses) on the unit that might spill into openings or places where water could enter.

  Water exposure may cause fire, electric shocks, or malfunctions.

• Never insert or remove an electric plug with wet hands. Do not handle this unit with wet hands.

  Failure to observe this may cause electric shocks or malfunctions.

Fire Warning

• Do not place any burning items or open flames near the unit.

  Failure to observe this may cause a fire.

Maintenance and Care

• Do not use aerosols or spray-type chemicals that contain combustible gas for cleaning or lubrication.

  Combustible gas inside the unit may cause an explosion or fire.

Handling Caution

• Be careful not to drop or apply strong impact to this unit.

  Failure to observe this may cause electric shocks, a fire, or malfunctions.

Battery Use

• Do not disassemble a battery.

  Battery contents can cause blindness or chemical burns if they come into contact with your eyes or skin.

• Do not dispose of a battery in fire or expose it to high temperatures such as direct sunlight.

  This may cause the battery to burst, resulting in fire or injury.

• Do not attempt to recharge batteries not intended for recharging.

  Charging non-rechargeable batteries may cause them to burst or leak, leading to injury.

• If batteries leak, avoid contact with the leaked fluid. Wash immediately if it contacts your skin or eyes and consult a doctor.

  Battery fluid is corrosive and may cause blindness or chemical burns.

Wireless Unit

• Do not use this unit near medical devices or inside medical facilities.

  Radio waves from this unit may affect electro-medical devices.

• Do not use this unit within 15 cm (6 in) of persons with a heart pacemaker implant or a defibrillator implant.

  Radio waves may interfere with these medical devices.

Risk of Injury

Power Supply

• Do not use an AC outlet where the power plug fits loosely.

  This may cause fire, electric shocks, or burns.

• When disconnecting the power plug, always hold the plug itself and not the cord.

  Pulling by the cord can damage it, causing electric shocks or fire.

• Insert the power plug firmly all the way into the AC outlet.

  Failure to do so can cause dust accumulation on the plug, leading to fire or burns.

Installation

• Do not place the unit in an unstable position where it might accidentally fall and cause injuries.
• When installing this unit:
  • Do not cover it with any cloth.
  • Do not install it on a carpet or rug.
  • Do not block its ventilation holes (cooling slits).
  • Do not install it in other ways than indicated.
  • Do not use the device in a confined, poorly-ventilated location.

  Failure to observe the above may trap heat inside the unit, causing fire or malfunctions. Ensure at least 30 cm (11-3/4 in) on top, 20 cm (7-7/8 in) on the sides, and 20 cm (7-7/8 in) behind the unit.

• Do not install the unit in places exposed to corrosive gases, salt air, excessive smoke, or steam.

  Doing so may result in malfunction.

Additional Safety Precautions

Avoid Proximity During Disasters

• During disasters such as earthquakes, avoid being near the unit.

  The unit may turn over or fall, causing injury. Move to a safe place immediately.

• When transporting or moving the unit, always use two or more people.

  Lifting the unit alone may cause back injury, other injuries, or damage to the unit itself.

• Before moving this unit, ensure the power switch is off, and all connection cables are disconnected.

  Failure to do so may damage cables or cause tripping hazards.

• For outdoor antenna installations, hire a dealer or qualified service personnel.

  Improper installation may lead to falling structures, causing injury. Specialized skills are required.

Hearing Loss Prevention

• Avoid prolonged use of the unit at high or uncomfortable volume levels.

  Permanent hearing loss can result. Consult a physician if you experience hearing abnormalities.

• Before connecting the unit to other devices, turn off the power for all devices and set the volume to the minimum.

  Failure to do so may result in hearing loss, electric shock, or device damage.

• When powering on an audio system:
  • Turn on the unit LAST.
  • Turn off the unit FIRST when powering down.

  Failure to observe these steps may result in hearing impairment or speaker damage.

Maintenance

• Disconnect the power plug from the AC outlet before cleaning the unit.

  Failure to do so may result in electric shocks.

Handling Caution

• Do not touch surfaces marked with a caution label.

  These surfaces may become hot during operation, potentially causing burns.

• Avoid inserting hands, fingers, or foreign materials such as metal or paper into the unit's openings.

  Failure to observe this may result in injury, electric shock, fire, or malfunctions.

• Keep small parts out of the reach of infants.

  Children may accidentally swallow them.

• Do not:
  • Stand or sit on the equipment.
  • Place heavy items on top of the equipment.
  • Stack the equipment.
  • Apply excessive force to buttons, switches, or input/output terminals.

  Failure to observe these precautions may cause injury or equipment damage.

• Avoid pulling connected cables.

  This may cause the unit to fall, resulting in injuries or damage to the unit.

Battery Use

• Use only specified battery types.

  Using incorrect batteries may cause fire, burns, or fluid leakage, leading to skin inflammation.

• Do not mix new batteries with old ones.

  This may result in fire, burns, or fluid leakage.

• Do not mix battery types, such as alkaline and manganese, or use batteries from different manufacturers.

  This may cause fire, burns, or fluid leakage.

• Keep batteries out of reach of children.

  Accidental swallowing may result in serious injuries or death. Consult a physician immediately if ingested.

• Do not carry or store batteries with metallic objects.

  Short circuits may cause batteries to burst, leak, or catch fire, causing injury or damage.

• Ensure proper polarity (+/-) when inserting batteries.

  Failure to do so may cause fire, burns, or leakage.

• Remove batteries if the unit will not be used for an extended period or if the batteries are depleted.

  This prevents fluid leakage that may cause injuries or damage.

• Insulate battery terminals with tape before storage or disposal.

  Unprotected terminals may contact other batteries or metallic objects, causing fire or injuries.

Notice

This section highlights precautions to prevent product failure, damage, malfunction, and data loss.

Power Supply

• Unplug the power cord from the outlet if the unit will not be used for an extended period of time.

  Even when turned off via [z] (Standby/On), a small amount of current continues to flow.

Installation

• Avoid using this unit in locations exposed to:
  • Direct sunlight that becomes extremely hot, such as near heaters.
  • Extremely cold temperatures.
  • Excessive dust or vibration.

  Failure to observe this precaution may deform the panel, damage internal components, or result in unstable operation.

• If using the wireless function:
  • Avoid installing the unit near metal walls, desks, microwave ovens, or other wireless network devices.

  Obstructions could shorten the transmission distance.

Connections

• Do not connect this product to public Wi-Fi or Internet directly.

  Only connect through a router with strong password protections. Consult your router manufacturer for security best practices.

• Read the manuals for external devices thoroughly before connecting.

  Improper handling may cause malfunctions.

• Do not connect this unit to industrial devices.

  This unit is designed for consumer use. Connection to industrial units may cause malfunctions.

Handling

• Avoid placing vinyl, plastic, or rubber items on the unit.

  Failure to observe this precaution may cause discoloration or deformation of the panel.

• Allow the unit to acclimate if exposed to rapid temperature changes (e.g., during transportation or rapid heating/cooling).

  Leave the unit off for several hours until it is completely dry to prevent malfunctions due to condensation.

Maintenance

• Use a dry, soft cloth for cleaning.

  Avoid using chemicals such as benzine, thinner, cleaning agents, or chemical scrubbing cloths as they can cause discoloration or deformation.

About Disposal

• Dispose of used batteries in accordance with local regulations.

Yamaha RX-A4A

Risk of Serious Injury or Death

If You Notice Any Abnormality

If any of the following abnormalities occur, immediately turn off the power and disconnect the power plug:

• The power cord/plug is damaged.
• An unusual smell, unusual sound, or smoke is emitted from the unit.
• Foreign material or water gets into the interior of the unit.
• There is a loss of sound during use.
• There is a crack or damage in the unit.

Power Supply

• Do not do anything that could damage the power cord:
  • Do not place it near a heater.
  • Do not bend it excessively or alter it.
  • Do not scratch it.
  • Do not place it under a heavy object.
  Using the power cord with the core of the cord exposed could cause electric shocks or a fire.
• Do not touch the power plug or cord if there is a chance of lightning. Failure to observe this may cause electric shocks.
• Use this unit with the power supply voltage printed on it. Failure to connect to an appropriate AC outlet may cause a fire, electric shocks, or malfunctions.
• Be sure to use the supplied power cord. Failure to observe the above may cause a fire, burns, or malfunctions.
• Do not use the supplied power cord for other units. Failure to observe the above may cause a fire, burns, or malfunctions.
• Check the electric plug periodically and remove any dirt or dust which may have accumulated on it. Failure to observe this may cause a fire or electric shocks.
• When setting up the unit, make sure that the AC outlet you are using is easily accessible. If some trouble or malfunction occurs, immediately turn off the power switch and disconnect the plug from the AC outlet. Even when the power switch is turned off, as long as the power cord is not unplugged from the wall AC outlet, the unit will not be disconnected from the power source.
• If you hear thunder or suspect approaching lightning, quickly turn off the power switch and pull the power plug from the AC outlet. Failure to observe this may cause a fire or malfunctions.
• If not using the unit for long periods of time, be sure to pull the power plug from the AC outlet. Failure to observe this may cause a fire or malfunctions.

Do Not Disassemble

Do not disassemble or modify this unit. Failure to observe this may cause a fire, electric shocks, injury, or malfunctions.

Water Warning

• Do not expose the unit to rain, use it near water or in damp or wet conditions, or place on it any containers (such as vases, bottles, or glasses) containing liquids which might spill into any openings or places where water may drop. A liquid such as water getting into the unit may cause a fire, electric shocks, or malfunctions.
• Never insert or remove an electric plug with wet hands. Do not handle this unit with wet hands. Failure to observe this may cause electric shocks or malfunctions.

Fire Warning

• Do not place any burning items or open flames near the unit, since they may cause a fire.

Maintenance and Care

• Do not use aerosols or spray-type chemicals that contain combustible gas for cleaning or lubrication. The combustible gas will remain inside the unit, which may cause explosion or fire.

Handling Caution

• Be careful not to drop or apply strong impact to this unit. Failure to observe this may cause electric shocks, a fire, or malfunctions.

Battery Use

• Do not disassemble a battery. If the contents of the battery get on your hands or in your eyes, it can cause blindness or chemical burns.
• Do not dispose of a battery in fire or expose it to high temperatures, such as direct sunlight or a fire. Doing so may result in the battery bursting, causing a fire or injury.
• Do not attempt to recharge batteries that are not intended to be charged. Charging could cause the battery to burst or leak, which can cause blindness, chemical burns, or injury.
• If the batteries do leak, avoid contact with the leaked fluid. If the battery fluid comes in contact with your eyes, mouth, or skin, wash immediately with water and consult a doctor. Battery fluid is corrosive and may possibly cause loss of sight or chemical burns.

Wireless Unit

• Do not use this unit near medical devices or inside medical facilities. Radio waves from this unit may affect electro-medical devices.
• Do not use this unit within 15 cm (6 in) of persons with a heart pacemaker implant or a defibrillator implant. Radio waves from this unit may affect electro-medical devices, such as a heart pacemaker implant or defibrillator implant.

Power Supply

• Do not use an AC outlet where the power plug fits loosely when inserted. Failure to observe this may cause a fire, electric shocks, or burns.
• When disconnecting the power plug, always hold the plug itself and not the cord. Pulling by the cord can damage it and cause electric shocks or a fire.
• Insert the power plug firmly all the way into the AC outlet. Using the unit when it is not plugged in sufficiently can cause dust to accumulate on the plug, causing a fire or burns.

Installation

• Do not place the unit in an unstable position where it might accidentally drop or fall over and cause injuries.
• When installing this unit, do not obstruct heat dissipation:
  • Do not cover it with any cloth.
  • Do not install it on a carpet or rug.
  • Do not block this unit's ventilation holes (cooling slits).
  • Do not install the unit in ways other than indicated.
  • Do not use the device in a confined, poorly ventilated location.
  Failure to observe the above may trap heat inside the unit, causing a fire or malfunctions. Ensure there is adequate space around the unit: at least 30 cm (11-3/4 in) on top, 20 cm (7-7/8 in) on the sides, and 20 cm (7-7/8 in) on the rear.
• Do not install the unit in places where it may come into contact with corrosive gases or salt air or places that have excessive smoke or steam. Doing so may result in malfunction.

Safety Instructions

During Disasters

• Avoid being near the unit during a disaster, such as an earthquake. Since the unit may turn over or fall and cause injury, quickly move away from the unit and go to a safe place.

Transporting or Moving the Unit

• Always use two or more people when transporting or moving the unit. Attempting to lift the unit by yourself may damage your back, result in other injury, or cause damage to the unit itself.
• Before moving the unit, turn off the power switch and disconnect all connection cables. Failure to observe this may damage the cables or cause you or someone else to trip and fall.
• For proper installation of an outdoor antenna, ensure it is done by the dealer where you purchased the unit or by qualified service personnel. Failure to observe this may cause the installation to fall and result in injury. Installation requires special skills and experience.

Hearing Loss

• Do not use the unit for long periods of time at a high or uncomfortable volume level, as this can cause permanent hearing loss. If you experience hearing loss or ringing in the ears, consult a physician.
• Before connecting the unit to other devices, turn off the power for all devices. Also, set all volume levels to the minimum before turning devices on or off to avoid hearing loss, electric shock, or device damage.
• When turning on the AC power in your audio system, always turn on the unit LAST to avoid hearing loss and speaker damage. When turning off the power, turn off the unit FIRST for the same reason.

Maintenance

• Remove the power plug from the AC outlet before cleaning the unit. Failure to observe this may cause electric shocks.

Handling Caution

• Do not touch surfaces labeled as hot. The label indicates that the surface may become hot during operation, and touching it could cause burns.
• Do not insert your hand or fingers into the openings of this unit. Failure to observe this may cause injury.
• Do not insert foreign materials such as metal or paper into the openings of this unit. Failure to observe this may cause a fire, electric shocks, or malfunctions.
• Keep small parts out of the reach of infants to prevent accidental swallowing.
• Avoid the following actions to prevent injuries or damage to the equipment:
  • Standing or sitting on the equipment.
  • Placing heavy items on top of the equipment.
  • Stacking the equipment improperly.
  • Applying unreasonable force to buttons, switches, or input/output terminals.
• Avoid pulling connected cables to prevent injuries or damage to the unit by causing it to fall.

Battery Use

• Do not use batteries other than specified batteries. Doing so may cause fire, burns, or fluid leakage that may cause skin inflammation.
• Do not use new batteries together with old ones. Mixing new and old batteries could cause a fire, burns, or inflammation due to fluid leaks.
• Do not mix battery types (e.g., alkaline with manganese) or batteries from different makers. Doing so can cause fire, burns, or inflammation due to fluid leaks.
• Keep batteries away from children to prevent accidental swallowing and inflammation due to fluid leaks.
• Do not store or carry batteries together with pieces of metal in a pocket or bag. This could cause the battery to short, burst, or leak, resulting in fire or injury.
• Ensure all batteries are inserted according to the +/- polarity markings. Failure to do so may result in fire, burns, or inflammation due to fluid leaks.
• When batteries run out, or if the unit will not be used for a long time, remove the batteries from the remote control to prevent fluid leakage.
• When storing or discarding batteries, insulate the terminal area with tape or another protective material. Mixing batteries with other batteries or metal objects can cause fire, burns, or inflammation due to fluid leaks.