Table of Contents, Features | Amplifier Tech AT1800 Series specs

Please Read First	Page 2
Safety Instructions	Page 2
Table of Contents	Page 3
Introduction	Page 3
Features	Page 3
Unpacking	Page 3
Placement	Page 3
Handles and Rack Mounting	Page 3
Getting to Know the Rear Panel	Page 4
Connecting Your Amplifier	Page 5
Input Connections	Page 5
Speaker Connections	Page 5
Making Rear Panel Connections	Pages 6 & 7
Power Control Connections	Page 8
Power Connection	Page 8
Amplifier Operation	Page 8
Manual On	Page 8
Automatic On	Page 8
Peak Indicator Light	Page 8
AC Line Connector and Power Cord	Page 8
Main Circuit Breaker	Page 9
Protection Circuitry	Page 9
ATI Service Information	Page 9
Care and Maintenance	Page 9
Trouble Shooting	Page 9
A Few Words About Hum and Noise	Page 10
Potential Ground Loops in a Complex A/V System...Page 10
Power Amplifier Specifications	Page 11
Warranty Terms and Conditions	Page 12

AT1800 Series Power Amplifiers

Congratulations! Thank you for purchasing an ATI Power Amplifier. Designed, engineered and manufactured in the United States, it has been carefully designed to deliver the best possible audiophile-grade performance as well as the most reliable operation.

The AT1800 Series is comprised of six models; the AT1802 two-channel amplifier, the AT1803 three-channel amplifier, the AT1804 four-channel amplifier, the AT1805 five-channel amplifier, the AT1806 six-channel amplifier and the AT1807 seven-channel amplifier. This manual covers all six models with the only difference being the number of channels you are using in your audio/video system.

In order to receive the maximum performance from your new amplifier, please take a few minutes to read this manual. This important information will help you make certain that the amplifier is properly configured for operation with the rest of the equipment in your system.

If you have any questions about this product, its installation or operation, please contact us via e-mail at amptech@ix.netcom.com or via telephone at 888-777-8507.

Features

Your new ATI amplifier is a state of the art, high performance, audio component. It is built utilizing totally complementary circuitry. A custom-designed, toroidal transformer drives the high current power supply with multiple windings for each channel. Each output module employs an advanced optically coupled protection circuit that replaces the need for bothersome fuse changes. The amplifier is cooled by convection through the use of custom designed, efficient heat sinks.

Unpacking

The carton and packing materials used in shipping your new amplifier were specially designed to protect it from the shock and vibration of shipping. We strongly suggest that you save the carton and packing materials to use if you move, or if the unit ever needs to be shipped back to us for any reason. Should you discover that your amplifier has been damaged during shipping, please contact your dealer or ATI immediately and request the name of the carrier so a written claim may be made.

THE RIGHT TO A CLAIM AGAINST A PUBLIC CARRIER CAN BE FORFEITED IF THE CARRIER IS NOT NOTIFIED PROMPTLY IN WRITING AND IF THE SHIPPING CARTON AND PACKING MATERIALS ARE NOT AVAILABLE FOR INSPECTION BY THE CARRIER. SAVE ALL PACKING MATERIALS UNTIL THE CLAIM IS SETTLED.

Placement

During normal home operation the heat sinks on the amplifier will become warm. However, there are instances during high level playback into low impedance speakers when the heat sinks will become much warmer than usual. To ensure the amplifier’s trouble-free operation, it is necessary to provide adequate ventilation for the heat sinks. Your amplifier should be kept away from external sources of heat such as radiators and hot-air ducts. The amplifier should never be placed with other heat-producing components in a cabinet or enclosure lacking free airflow. Do not stack other components on top of your amplifier.

Handles and Rack Mounting

A front panel handle set for the AT1800 is available from your dealer or ATI for an additional charge. Carefully remove the four socket-head cap screws using an Allen wrench while being careful to avoid scratching the front panel. Follow the instructions that come with the handles for proper installation. Your amplifier may be mounted in a standard 19-inch rack by using the optional 19-inch rack mount panel.

CAUTION: THE RACK MOUNT PANEL CANNOT SUPPORT THE WEIGHT OF YOUR AMPLIFIER. BE SURE TO MOUNT THE UNIT ON A STRONG, WELL-SUPPORTED SHELF.

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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.