Instruction Manual Model A-2000 Seven Channel Amplifier 2 Warnings A-2000 7 Channel Amplifier Please Read First Installation Location To assure proper operation and to avoid the potential for safety hazards, place the unit on a firm and level surface capable of supporting 100 pounds or more. When placing the amplifier on a shelf, be certain that the shelf and any mounting hardware can support the weight of the amplifier and any additional items in the equipment rack, or on the shelf. When positioning the amplifier in its final location, make certain that it has adequate ventilation on all sides, as well as on the top and bottom. In particular, it is a good idea to provide at least two or three inches of room above the amplifier for air circulation. DO NOT place CDs, DVDs, videotapes, owner's manuals, or other paper on top of, or beneath, the unit, or in-between multiple amplifiers in a stack. This will block airflow, causing heat build-up, degraded performance, and may create a possible fire hazard. If the unit is to be enclosed in a cabinet or rack, make certain there is adequate air circulation. Sufficient ventilation should be provided so that hot air may exit, and cool air may enter the cabinet. In some instances, a small cooling fan may be required to insure adequate airflow through the cabinet. If you are in doubt as to the ventilation requirements for your specific installation, please contact us. Also, do not place the amplifier directly on a carpeted surface, as this will inhibit airflow underneath as well as create a potential fire hazard. Avoid installation in humid locations, in extremely hot or cold locations, or in areas that are exposed to direct sunlight or space heating equipment. CAUTION: To reduce the risk of electric shock, do not remove the cover. No user serviceable parts inside. Refer to qualified personnel. WARNING: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture. The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electrical shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating maintenance (servicing) instructions in the literature accompanying the appliance. Precautions Verify The Line Voltage Your new amplifier has been factory configured for 120 or 230 (+/- 3%) volt AC lines depending on what country you purchased it in. Connecting the amplifier to a line voltage other than that for which it is intended can create a safety and fire hazard, and may damage the amplifier. If you have any questions about the voltage requirements for your specific model, or about the line voltage in your area, contact Atlantic Technology before plugging the unit into a wall outlet. Loudspeaker Ratings The Atlantic A-2000 has adequate power to drive most loudspeakers without producing audible distortion. Most modern speakers are rated at four to eight ohms nominal impedance, but within some frequency ranges, the impedance may drop to two ohms. The A-2000 is designed with substantial power reserves to protect you from experiencing any problems at these low impedances, unless you demand excessively high volume levels. Due to the high power output capability of the A-2000, it is important that the amplifier not be used with speakers that aren't capable of handling the A-2000's power output or in a manner that could lead to speaker damage. Before using the A-2000 for the first time, make certain that your speakers are capable of handling its rated power output, at the impedance rating of your speakers and that you read and understand the following important note. IMPORTANT NOTE Given the right set of circumstances any amplifier is capable of damaging any loudspeaker, no matter what their respective power ratings. Damage can be done either through excessive power output to the speaker or excessive distortion from the amplifier due to clipping. Amplifier clipping is the result of asking the amplifier to deliver substantially more power than it is capable of producing without excessive distortion. This is the single most common cause of speaker damage and can happen no matter how high the power rating of the attached speakers or amplifier may be. Atlantic Technology is not responsible for damage to any speaker system or other component that is caused by using products whose power rating is lower than that of the amplifier or in a manner that results in amplifier clipping and therefore component damage. Verify AC Circuit Capacity The high power output of your amplifier may require heavy power draw under full load conditions. To insure proper performance, and to avoid potential safety hazards, we recommend that it be connected to a minimum 20 Amp capacity circuit. Connecting multiple amplifiers to the same circuit, or connecting it to a circuit used by other heavyuse power devices, such as air conditioners, may cause circuit breakers to trip. NOTE: It is always a good idea to avoid using any audio or video equipment on the same AC circuit as equipment with motors, such as air conditioners or refrigerators. This will lessen the possibility of power variation and electrical start-up noise affecting your sound system. Extension Cords and Power Strips We do not recommend that extension cords be used with this product unless they are of sufficient gauge to pass the necessary current during full load conditions. Most inexpensive extension cords are not capable of such high-current loads. Similarly, should you use a power strip, surge protector or any type of AC power line conditioning equipment, make certain that it is also able to handle the high current loads this product will draw. Do Not Open The Cabinet There are no user serviceable components inside this product. Opening the cabinet may present a shock hazard, and any modification to the product will void your warranty. If water or any metal object, such as a paper clip, coin or a staple, accidentally falls inside the unit, disconnect it from the AC power source immediately, and contact Atlantic Technology or your Dealer/Installer for further instructions. Handle the AC Power Cord Gently When disconnecting the power cord from an AC outlet, always pull the plug, never pull the cord. If you do not intend to use the amplifier for any considerable length of time, disconnect the plug from the AC outlet. If the power cord is replaced, make certain that it is of similar gauge. As with all electrical devices, do not run power cords under rugs or carpets or place heavy objects on them. Damaged power cords should be replaced immediately with cords meeting factory specifications. IMPORTANT SAFETY NOTE Before connecting a new component such as power amplifier to your audio or home theater system it is always good practice to make certain that all components are turned off, and preferably unplugged from their AC power source. Many modern electronics products feature automatic turn-on circuits that may be activated during an installation, causing the potential for damage to electronic components and/or speakers. Such damage is not covered by product warranties and Atlantic Technology specifically disclaims responsibility for any such damage. Wiring Cables that are run inside of walls should have the appropriate markings to indicate compliance with, and listing by the UL, CSA or other standards required by the UL, CSA, NEC or your local building code . Questions about cables inside of walls should be referred to a qualified customer installer, or a licensed electrician or low-voltage contractor. Model A-2000 Power Amplifier Instruction Manual 3 Table of Contents 2 3 3 4 5 Please Read First Features Unpacking Rear Panel Connecting The A-2000 Model A-2000 Power Amplifier Thank you for buying this Atlantic Technology product. This unit has been carefully designed to deliver the best possible sonic performance and extended reliability. We trust that your new amplifier will bring many years of listening pleasure to your multi-channel music or home theater system. In order to receive the maximum enjoyment from your new amplifier, please take a few minutes to read this manual. It will help you make certain that the amplifier is properly configured for operation with the rest of the equipment in your system.This brief investment of time will provide major dividends by making certain that your amplifier is properly installed and optimized for the specifics of your installation.If you have any questions about this product, its installation or operation,please contact your Authorized Atlantic Technology Dealer/Installer or us via e-mail at customerservice@atlantictechnology.com or via telephone at 781-762-6300. 5 5 7 7 7 7 7 7 7 7 8 8 8 9 7 Amplifier Operation Input Connections Speaker Connections Power Control Connections Remote Turn-On Using Products Equipped With a Low Voltage Trigger Jack Remote Turn on Using External AC to DC Power Converter Power Connection Manual On Output Settings Features Your new Atlantic Technology Multi-Channel Amplifier is a state of the art,high performance audio device. It is built utilizing totally complementary circuitry from input to output. The high current power supplies are driven by customdesigned toroid transformers which reduce hum and noise significantly. Each of the seven amplifier modules incorporates 2 very high quality discrete output devices capable of passing in excess of 20 amps of current. The amplifier's circuitry is both very sophisticated in concept yet simple in layout and construction.A minimum number of components are used in the signal path to ensure excellent sound quality and reliability.These components have been chosen for their ability to amplify the signal while adding or subtracting nothing to/from the sound. The advanced protection circuits (over-current, over-temperature, DC offset)are external to the signal path and therefore don't degrade the amplified signal in any way. No current or voltage limiting are employed to further ensure signal purity and guarantee substantial dynamic range.Heat management is provided by custom-designed cast aluminum heat sinks that also form the sides of the amplifier itself. The heat sinks have been "overspeced" to ensure cool running and long life for the internal components, as heat is the prime enemy of electronic parts. 7 Care and Maintenance 8 Troubleshooting Cleaning When You Are Away Protection Circuitry Service Information Troubleshooting Guide 8 A Few Words About Hum and Noise 10 Specifications Potential Ground Loops in a Complex A/V System For Future Reference Record your A-2000's serial number and date of purchase here. The serial number is found on the back panel. Serial Number Date of Purchase Unpacking The carton and packing materials used in shipping your new amplifier were specially designed to cushion it from the shocks 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 for any reason. To minimize the size of the carton in storage, you may wish to flatten it by carefully opening the top and bottom flaps and folding the carton flat. Other cardboard inserts may be stored in the same manner.Packing materials that cannot be collapsed should be saved along with the carton in a plastic bag. Your new amplifier has been engineered using heavy duty materials for high reliability and weighs a considerable amount (67 pounds). This substantial weight requires that you pay special attention to unpacking and installation of the unit. You may wish to have someone help you remove the unit from its carton and place it in your chosen location. The contents of this manual are Copyright © 2002 by Atlantic Technology International, Corp., and may not be duplicated or reproduced by any means, whether physical, electronic or otherwise without prior written consent from Atlantic Technology International, Corp. Atlantic Technology and the Atlantic Technology logo are registered trademarks of Atlantic Technology International, Corp. Specifications are those in effect at the time of printing.Atlantic Technology International, Corp. reserves the right to change specifications or designs at any time without notice without obligation to modify existing units. 4 A-2000 Rear Panel A-2000 7 Channel Amplifier A-2000 Rear Panel A B C D E Rear Panel A Audio Inputs (see page 5) Use the INPUT jacks to connect to the outputs of a surround processor, preamplifier, AV receiver with preout connections, DVD player with discrete five channel outputs, or HDTV product with built-in surround decoder.Whatever kind of unit you connect be sure that it ...