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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Amplifier Tech SUM100, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Amplifier Tech SUM100 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Amplifier Tech SUM100. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Amplifier Tech SUM100 should contain:
- informations concerning technical data of Amplifier Tech SUM100
- name of the manufacturer and a year of construction of the Amplifier Tech SUM100 item
- rules of operation, control and maintenance of the Amplifier Tech SUM100 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Amplifier Tech SUM100 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Amplifier Tech SUM100, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Amplifier Tech service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Amplifier Tech SUM100.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Amplifier Tech SUM100 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
Audio Technologies Inc. | 154 Cooper R oad #902 | West Berlin, NJ 08091 | Voi ce 856-719-9900 | Fa x 856-719-9903 | www. audio.com © Copyright 1997-2005, Audio Technologies Incorporated - Pr inted in USA SUM100 LINE/SUM/LINE AMPLIFIER OPERATING AND MAINTENANCE MANUAL[...]
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Page 2
Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Vo ice 856-719-9900 | Fa x 856-719-9903 | www. audio.com DESCRIPTION The SUM100 Summing Amplifier is an inex pensive, high per formance amplifier that is designed as a line level stereo to mo no summing amplifier. It is also useful as a gain block, and as an impedance converte[...]
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Page 3
Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Vo ice 856-719-9900 | Fa x 856-719-9903 | www. audio.com GAIN STAGE A low noise NE5532 se ction (A1A) provides 26dB maximum gain. A linear control is used in a unique circ uit configuration to provid e a wide range logarithmic MASTER gain control characteristic in a variable g[...]
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Page 4
Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Vo ice 856-719-9900 | Fa x 856-719-9903 | www. audio.com company inspect the unit and the box at y our location. Count the pieces! Don't throw out the boxes and packing material until you are sure you have everything that is coming to you. The amplifiers need either their[...]
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Page 5
Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Vo ice 856-719-9900 | Fa x 856-719-9903 | www. audio.com shielded and free of ground loops. It may even be necessary to add shielding to the DC input leads to avoid RF pickup. POWER DISTRIBUTION Multiple amplifiers sharing a single wall-wart power supply should be looped throu[...]
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Page 6
Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Vo ice 856-719-9900 | Fa x 856-719-9903 | www. audio.com 36VDC will cause some increased intern al heating, but above 36VDC may cause IC failure. OPERATING POINTS An internal reference voltage equal to 1/2 the supply voltag e is generated. All audio stage IC inputs and outputs[...]
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Page 7
Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Vo ice 856-719-9900 | Fa x 856-719-9903 | www. audio.com PERFORMANCE SPECIFICATIONS Gain: 28dB maximum, 0dB at 12 o’clock pot position Nominal Levels: +4dBu in, +4dBm out to 600 ohm balanced load Peak Levels: +24dBu in, +22 dBm out to 600 ohm balanced load Noise 20kHz B.W.: [...]