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Instructions Amplifier Tech, Modèle AT1800 Series

Fabricant : Amplifier Tech
Taille : 397.8 kb
Nom Fichier : 084662a1-f3d7-4772-a586-03b9ea10b08e.pdf
Langue d'enseignement: en
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Always start with a low volume level on your controller or preamp to avoid damage to your speakers. Manual On Simply press the front panel power switch to the “up” position. There will be a short pause from the time the power is turned on until power is applied to the speakers. This is intentional, and protects your speakers from damage while the amplifier stabilizes. To turn the unit off, press the Power button downward. The ON indicator light will go out and the STANDBY light will illuminate. Automatic On Make certain that the connection to the controlling device is correct. Whenever the controlling device is turned on, the amplifier will automatically turn on after a short pause. This pause is intentional, and it protects your speakers from damage while the amplifier stabilizes. You may also hear a relay click as during start up. This is also normal. To turn off your amplifier, simply turn off the device feeding the amplifier it’s audio signals. The amplifier will automatically go into a standby mode in a few moments. Peak Indicator Light This indicator circuit continually monitors the output level of your amplifier. This light will come on if the amplifier exceeds its maximum output capability on any channel. While this will not harm the amplifier, it does warn of potential harm to your loudspeakers if the light stays illuminated continuously for more than ten seconds. The volume setting from your preamp or source device must be turned down if this occurs. AC Line Connector and Power Cord Your amplifier is supplied with an internationally approved (IEC) power line connector that accepts the supplied detachable, high-current capacity power cord. WARNING: Under no circumstances should the round third prong on the plug be cut, bent or in any other way defeated as this may result in severe shock. WARNING: Always turn off the amplifier and unplug the power cord before making any electrical connections. Page 8 Main Circuit Breaker Your amplifier is supplied with a heavy-duty magnetic circuit breaker. If power to your amplifier is interrupted, inspect the circuit breaker on the rear of the unit. If the circuit breaker is in the off position you may reset it to the on position to restore AC power. If the circuit breaker immediately trips to the off position, unplug the amplifier from the AC power source and contact the ATI Service Department. WARNING: Always turn off the amplifier and unplug the power cord before making any electrical connections. Protection Circuitry Your ATI amplifier uses an advanced optically coupled protection circuit that does not require fuses and is completely isolated from the audio path. In the event that the amplifier senses a shorted speaker wire the protection circuit will engage shutting down the output and will sample the state of the amplifier every 7 seconds (nominal). The output will be cut off as long as the short exists. The amplifier will begin to operate normally after the shorted situation is repaired. If this should happen, first check all speaker wire connections, both at the speakers themselves and at the speaker terminals on the back of the amplifier to make certain that none of the strands from any channel touch another channel, and that none of the strands from a "positive" terminal touch those from a "negative" terminal. Even a few stray wire strands can cause the unit to go into the protection mode. After checking all speaker connections, turn the unit back on. If it continues to turn off, check your speakers to verify that they are operating properly. If all other potential sources of trouble check out properly, contact ATI for further assistance and information. Problem ATI Service Information The AT1800 series does not contain any user serviceable parts inside. If you suspect a problem that may require service assistance, contact us at amptech@ix.netcom.com, or by phone at 888-777-8507. It is important that only an authorized service agent carry out any repairs. This will assure proper service and preserve the protection of your Limited Warranty. Keep your sales slip or receipt in a safe place with this manual so that it will be available to verify the purchase date, should you experience a problem covered by our warranty. Care and Maintenance Cleaning When the unit becomes dirty, wipe it with a clean, soft, dry cloth. If necessary, first wipe the surface with a soft cloth slightly dampened with mild soapy water, then with a fresh cloth dampened with clean water. Wipe dry immediately with a dry cloth. NEVER use benzene, thinner, alcohol or any other volatile cleaning agent. Do not use abrasive cleaners, as they will damage the finish of the metal parts. Avoid spraying insecticide, waxes, polishing agents, or any aerosol product near the unit. Troubleshooting Your ATI amplifier is designed for trouble free operation. If you follow the instructions in this manual you should enjoy many years of high quality listening enjoyment. However, as with any sophisticated e...


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