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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Altec Lansing LF215-4A, 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 Altec Lansing LF215-4A 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 Altec Lansing LF215-4A. 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 Altec Lansing LF215-4A should contain:
- informations concerning technical data of Altec Lansing LF215-4A
- name of the manufacturer and a year of construction of the Altec Lansing LF215-4A item
- rules of operation, control and maintenance of the Altec Lansing LF215-4A 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 Altec Lansing LF215-4A 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 Altec Lansing LF215-4A, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Altec Lansing 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 Altec Lansing LF215-4A.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Altec Lansing LF215-4A 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
FREQUENCY RESPONSE 1, 2 42 Hz - 650 Hz (±3 dB) USABLE LOW FREQUENCY LIMIT (-10 dB) 1, 2 33 Hz SENSITIVITY 3 103 dB SPL, (2.00 V input) POWER HANDLING 4 500 W continuous; 2,000 W peak MAXIMUM OUTPUT (1 m) 5 130 dB SPL continuous; 136 dB SPL peak TRANSDUCER COMPONENTS 2x 15 in. W oofers (4156-8A) IMPEDANCE 7 Nominal: 4.0 Ω Minimum: 3.5 Ω at 41 H[...]
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Page 2
ARCHITECTS & ENGINEERS SPECIFICA TION The loudspeaker system shall be a low frequency , multi- purpose trapezoid enclosure consisting of two 15-inch / 380mm cast frame loudspeaker components with moisture- resistant cones. The loudspeaker system shall have an operating bandwidth of 42 Hz - 650 Hz with a sensitivity of 103 dB when measured at a [...]
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Page 3
As we are continually striving to improve Altec Lansing products, specifications are subject to change without notice. Please visit www .altecpro.com for the lastest information on Altec Lansing Professional products. Altec Lansing Professional Oklahoma City , OK 73116 A division of Altec Lansing T echnologies, Inc., Milford, PA 18337-0277 • Made[...]
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Page 4
A W1139 REV01 © 2003 Altec Lansing Professional 1000 W . Wilshire Blvd., Suite 362 Oklahoma City , Oklahoma 73116 Phone: 1-405-848-3108 • Fax: 1-405-848-3217 W eb: www .altecpro.com • Email: proinfo@alteclansing.com P ROF ESSIO N Al 15 11.9 [301.51] 9.47 [240.47] 5.1 [128.33] DIMENSIONS ARE IN INCHES. DIMENSIONS SHOWN IN ( ) PARENTHESES ARE IN[...]