ATI Technologies AT1826 User Manual - Page 4

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AT1820 Series Power Amplifiers

Congratulations! Thank you for purchasing an ATI

AT1820 Power Amplifier, one of the most advanced

audio components available. Designed, engineered and

assembled in the United States, it has been carefully

designed and tested to deliver the best possible audio-

phile-grade performance as well as the most reliable

operation.

The AT1820 Series is comprised of six models; the last

digit in the model number is the number of channels in

the amplifier. This manual covers all six models.

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 instal-

lation or operation, please contact us via e-mail at sup-

[email protected] or via telephone at 323-278-0001.

Features and Testing

Your AT1820 amplifier was designed to provide a state

-of-the-art listening experience and is suitable for use

with associated components of the highest order. The

amplifier uses an updated version of the AT1800 am-

plifier modules with new circuitry to add the XLR in-

puts. Each module includes an ATI designed custom

gain stage and linear power supply to deliver superior

performance.

Additional features include:



Custom soft-start circuitry to minimize any turn-on

power surge;



Complete protection from overload, DC faults,

over-voltage or over-temperature conditions.



Extruded aluminum heatsinks to aid in cooling the

amplifier modules.

This AT1820 amplifier has been put through a rigorous

and unique testing procedure ensuring that each ampli-

fier will last for many years with minimal service re-

quirements. This procedure includes the following:



All assembled circuit boards are given a thorough

visual inspection and are then performance tested.



The tested, assembled circuit boards are then in-

stalled in a new AT1820 and the whole unit is test-

ed for every function and parameter.



The unit is put on a burn-in torture rack to test for

AT1820 Manual

any possible component failures.



The amplifier then undergoes a critical listening

and final functional test.

Unpacking

Your amplifier is a precision electronic instrument and

should be properly packaged any time shipment is

made. The carton and packing materials used in ship-

ping 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 dis-

cover that your amplifier has been damaged during

shipping, please contact your dealer or ATI immediate-

ly 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 MA-

TERIALS ARE NOT AVAILABLE FOR INSPEC-

TION 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 in-

stances during high level playback into low impedance

speakers when the heat sinks will become 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.

Note: It is imperative that the amplifier be operated in

a well-ventilated environment and that the immediate

external temperature be maintained as specified.

Rack Mounting

The AT1820 Series amplifiers can be rack mounted

into a standard 19-inch rack with the addition of rack

ears. The kits are available separately for an additional

charge and include instructions and hardware for prop-

er mounting of the parts to the amplifier.

To order, call your dealer or ATI and order SKU # /

Model "AT1820 RKM".

Rev-05/21