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.

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.

Protection Circuitry

Care and Maintenance

Your ATI amplifier uses an advanced optically coupled

Cleaning

protection circuit that does not require fuses and is completely

When the unit becomes dirty, wipe it with a clean, soft, dry

isolated from the audio path. In the event that the amplifier

cloth. If necessary, first wipe the surface with a soft cloth

senses a shorted speaker wire the protection circuit will

slightly dampened with mild soapy water, then with a fresh

engage shutting down the output and will sample the state of

cloth dampened with clean water. Wipe dry immediately with

the amplifier every 7 seconds (nominal). The output will be

a dry cloth. NEVER use benzene, thinner, alcohol or any other

cut off as long as the short exists. The amplifier will begin to

volatile cleaning agent. Do not use abrasive cleaners, as they

operate normally after the shorted situation is repaired.

will damage the finish of the metal parts. Avoid spraying

 

insecticide, waxes, polishing agents, or any aerosol product

If this should happen, first check all speaker wire connections,

near the unit.

both at the speakers themselves and at the speaker terminals

Troubleshooting

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

Your ATI amplifier is designed for trouble free operation.

from a "negative" terminal. Even a few stray wire strands can

If you follow the instructions in this manual you should enjoy

cause the unit to go into the protection mode.

many years of high quality listening enjoyment. However, as

 

with any sophisticated electronic device, there may be

After checking all speaker connections, turn the unit back on.

occasional problems upon initial installation, or during the

If it continues to turn off, check your speakers to verify that

life of the unit. The items on the list below are a brief guide to

they are operating properly. If all other potential sources of

the minor problems that you may be able to correct yourself.

trouble check out properly, contact ATI for further assistance

If these solutions do not rectify a problem, or if the problem

and information.

persists, contact us for assistance.

Problem

Solutions

 

 

Amplifier will not turn on.

Master Power Switch turned off.

 

Turn on Master Power Switch.

 

 

Amplifier will not turn off.

Remote trigger cable not properly connected.

 

Verify connection of trigger cable at both ends.

 

 

Amplifier turns on, but no audio from one or more channels.

Input plugs not connected to proper jack or are loose.

 

Check input connections.

No audio from one or more channels.

Speakers not connected properly.

Check speaker connections at amp and speaker.

Audio levels differ.

Improper settings or output levels from processor or controller.

 

Check the settings on your preamp, processor or controller.

 

 

 

Audio plays, then cuts off.

Amplifier shorted.

 

Check speaker connections for short circuit at amp and speaker.

 

 

 

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Amplifier Tech AT1800 Series Main Circuit Breaker, ATI Service Information, Protection Circuitry Care and Maintenance
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AT1800 Series specifications

The Amplifier Tech AT1800 Series is a groundbreaking line of high-performance audio amplifiers designed for both professional and consumer applications. Renowned for their exceptional sound quality and robust build, these amplifiers have become a staple in various audio environments, including live sound, installations, and studio settings.

One of the standout features of the AT1800 Series is its advanced Class D amplification technology. This ensures not only high efficiency but also reduced heat generation, allowing these amplifiers to run cooler compared to traditional Class A or AB amplifiers. This efficiency translates to less power consumption, making the AT1800 Series an environmentally friendly choice while still delivering an impressive amount of power. With power ratings typically ranging from 1800 watts to 2400 watts, the AT1800 Series is capable of driving large speaker systems with ease.

Another significant characteristic of the AT1800 Series is its impressive signal-to-noise ratio, which results in clear, distortion-free sound even at high volumes. The amplifiers are equipped with high-quality components such as toroidal transformers and high-grade capacitors, which contribute to the overall audio fidelity. Users can expect crisp highs, detailed mids, and powerful lows, making these amplifiers suitable for a variety of musical genres and audio content.

The user-friendly interface of the AT1800 Series includes intuitive controls and LED indicators that provide real-time feedback on performance. The amplifiers also feature built-in protection circuitry, which safeguards against overload, short circuits, and thermal issues, ensuring reliable operation throughout extended use.

Connectivity options on the AT1800 Series are extensive, featuring both balanced and unbalanced inputs, making integration with existing audio systems seamless. The series is also equipped with output connections capable of accommodating a wide range of speaker configurations, allowing for flexibility in setup.

Moreover, the rugged chassis of the AT1800 amplifiers is designed for durability. Its lightweight yet sturdy construction ensures that the amplifiers can withstand the rigors of transport and installation while still being aesthetically pleasing for front-of-house setups or permanent installations.

In summary, the Amplifier Tech AT1800 Series combines innovative technology with superior sound quality and durability, making it an excellent choice for professionals and audiophiles alike. Its blend of efficiency, high performance, and versatile connectivity options solidifies its position as a leading player in the audio amplifier market.
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