AT2000 SERIES AND AT3000 SERIES PURE BALANCE® 2- TO 7-CHANNEL POWER AMPLIFIER OWNER’S GUIDE TRANSLATING TECHNOLOGY
Please Read First 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. CAUTION: To reduce the risk of electrical shock, do not remove the cover (or back). No user serviceable parts inside. Refer servicing to qualified service personnel. WARNING: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture.
Table of Contents Features Please Read First ............................................................ Page 2 Safety Instructions ........................................................ Page 2 Table of Contents .......................................................... Page 3 Introduction ................................................................... Page 3 Features ........................................................................... Page 3 Unpacking .......................................
Getting to Know the Rear Panel A XLR Balanced Audio Inputs Use the BALANCED INPUT jacks to connect to the outputs of a preamplifier or other control device with XLR outputs. D Speaker Outputs Use the OUTPUT binding posts to connect the amplifier to your speakers; red for positive, black for negative. B Unbalanced Audio Inputs Use the UNBALANCED INPUT jacks to connect to the ouputs of a preamplifier, receiver with preout connections, CD player, or other control devices.
Input Connections Connecting the amplifier to your source equipment is simple. Using high-quality XLR cables or audio interconnect cables, match the output channel designations on the rear of your source equipment to the balanced input jacks or unbalanced inputs jacks on the rear panel of your amplifier that have the same channel name.
Making Rear Panel Connections When connecting the amplifier to your source equipment, match the output channel designations on the rear of your source equipment to the input jacks on the rear panel of your amplifier that have the same channel name. Correct polarity connections are important to maintain proper speaker phasing. When making connections to the amp and speakers, adhere to a consistent pattern of using one side of the wire to the red terminals and the other side to the black terminals.
Speaker essor Shown as a Typical Example Left Front Speaker Left Surround Speaker Left Rear Speaker Page 7
Power Control Connections Your amplifier features a built-in remote turn-on system that will automatically switch the amplifier on when another device in the system is switched on. Remote Turn-On Using Products Equipped With a Low Voltage Trigger Jack Press the front panel power switch on the amplifier so that it is in the ON position. Then, using an accessory cable with a 3.
Main Circuit Breaker ATI Service Information 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.
A Few Words About Hum and Noise Audible hum, or a discernable low frequency noise, is one of the most common problems in audio/video systems. This hum, which may be present even when the volume is at a low level, is usually caused by a problem known as “ground loops”. A ground loop occurs when there is a difference in ground voltages between two or more components that are connected electrically. This, in turn, creates multiple current paths and causes the low-level noise, or hum.
Power Amplifier Specifications Series AT2000 AT3000 2 to 7 2 to 7 EIA 1kHz Output Power at 8 Ohms* 250 watts 350 watts EIA 1kHz Output Power at 4 Ohms* 375 watts 450 watts FTC Full Bandwidth Output Power at 8 Ohms** 200 watts 300 watts FTC Full Bandwidth Output Power at 4 Ohms** 300 watts 450 watts Input Sensitivity for Full Rated Power 1.6 Volts 1.8 Volts Number of Channels Frequency Response at Rated Output 20Hz to 20kHz ±0.
90-Day Limited Warranty Terms and Conditions (7-Year Optional Extended Warranty) This ATI product is warranted against defects in materials and workmanship for 90 days from the date of purchase by the original owner. The date of purchase shall be established by the original owner presenting to the ATI Customer Service Facility the original owner’s purchase receipt or sales slip showing from whom the product was purchased, the date of purchase and the purchase price of the unit.
