ATI AT6012 User Manual

Table of Contents

Functional Description .............................. Page 3

Unpacking ............................................... Page 3

Precautions .............................................. Page 4

Safety Instructions .................................... Page 5

Notes On “Hum” ........................................ Page 6

Cooling .................................................... Page 7

Placement ................................................ Page 7

Rack Mounting ......................................... Page 7

Electrical Connections ............................... Page 8

Input Connections ..................................... Page 8

Zone Volume Controls ................................ Page 8

Output Connections .................................. Page 8

Loudspeaker Phasing ................................ Page 8

Hook-Up Diagram ..................................... Page 9

Loudspeaker Ratings ................................ Page 10

Operation ............................................... Page 10

Power Switch .......................................... Page 10

Remote-Power-On ................................... Page 10

Optic Protection Circuit ............................ Page 10

Circuitry ................................................. Page 11

AC Line Connector And Power Cord ........... Page 11

AC Fuse .................................................. Page 11

Detachable Modular Component (DMC4) ... Page 11

AT6012 Specifications .............................. Page 12

General Maintenance And Service ............. Page 13

Warranty ................................................ Page 14

Obligation To Make Changes .................... Page 14

Save For Your Reference ........................... Page 15

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Functional Description

The AT6012 is a 12-channel, 6-zone power amplifier designed to provide audiophile-quality sound in multi-room
installations. The AT6012 consists of six 2-channel modules (DMC4). Each zone’s volume (gain) can be remotely
adjusted via a “dry” 3-wire connection from control devices such as Crestron, Xantech, Phast etc. Please consult the
instruction manuals from those companies to ensure compatibility. The AT6012 can be activated remotely via a DC
current of 3 to 24 V. An Optic Protection Circuit will protect each amplifier module from overloads and shorts and will
automatically reset itself.

Unpacking

The AT6012 has been carefully inspected, tested and packed before leaving the factory. Immediately upon receiving
your amplifier, inspect the carton for evidence of mishandling during shipment. Then, carefully unpack the amplifier
and inspect it for damage. We suggest that you open the carton from the bottom, then carefully turn the box over and
lift the carton away from the amplifier, thus facilitating access to the unit.

Please save the shipping carton and all inner packing materials in the event that the amplifier needs to be shipped for
service or moved to a new location. Should you discover that the amplifier has been damaged during shipping, please
contact your dealer or ATI immediately and request the name of the carrier so a written claim can 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 HAS BEEN SETTLED.

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Precautions

The amplifier is a wideband design with substantial power output capability. Certain precautions must be taken to
ensure proper operation.

1. Never expose the unit to moisture.

2. Never plug an input cable into the amplifier while the amplifier is turned on.

3. Never apply the “thumb test” (touching the “hot” lead of the input cable with your finger) to the tip of the input
cable or input jack of the amplifier. RF rectification and/or hum will be created and almost surely will damage the
loudspeakers. ATI will not be responsible for damage to the loudspeakers due to improper use of the equipment.

4. Under no circumstances should the output terminals of the amplifier be short-circuited.

5. Avoid restricting the airflow around the unit. Good airflow is necessary to help ensure proper operation.

6. Be sure that the loudspeakers connected can handle the output power of the amplifier at the loudspeakers’ rated
impedance. The warranty on the amplifier does not cover damage to loudspeakers that have inadequate power
handling capabilities.

7. Do not stack other system components or any other materials directly on top of the unit. The heat-dissipating
system of the amplifier depends on free flowing air around the chassis.

WARNING: DO NOT OPEN AMPLIFIER, RISK OF ELECTRICAL SHOCK! DO NOT ATTEMPT SERVICING
THIS UNIT YOURSELF. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

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Safety Instructions

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS UNIT TO RAIN
OR MOISTURE.

Read all the safety and operating instructions before connecting or using this unit.

All warnings on the unit and in this operating manual should be adhered to.

All operating and use instructions should be followed.

Do not use this unit near water: for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement,
or near a swimming pool.

This unit should be installed so that its location or position does not interfere with its proper ventilation. For example,
it should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings: or placed in a
built-in installation, such as bookcase or cabinet, that may impede the flow of air through its ventilation openings.

The unit should be situated away from heat sources such as radiators, heat registers, stoves, or other devices
(including amplifiers) that produce heat.

The unit should be connected to a power-supply outlet only of the voltage and frequency marked on its rear panel.

The power-supply cord should be routed so that it is not likely to be walked on or pinched, especially near the plug,
convenience receptacles, or where the cord exits from the unit.

Clean unit only as recommended in this instruction manual.

The power-supply cord of the unit should be unplugged from the wall outlet when it is to be unused for a long period of time.

Care should be taken so that objects do not fall, and liquids are not spilled, into the enclosure through any openings.

The unit should be serviced by qualified service personnel when:

A. The power cord or the plug has been damaged; or
B. Objects have fallen, or liquid has been spilled, into the unit; or
C. The unit has been exposed to rain, or liquids of any kind; or
D. The unit does not appear to operate normally, or exhibits a marked change in performance; or
E. The device has been dropped, or the enclosure damaged.

To prevent electric shock, do not use the polarized plug with an extension cord, receptacle or other outlet unless the blades
can be fully inserted to prevent blade exposure.

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