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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Electro-Voice TL880D, 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 Electro-Voice TL880D 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 Electro-Voice TL880D. 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 Electro-Voice TL880D should contain:
- informations concerning technical data of Electro-Voice TL880D
- name of the manufacturer and a year of construction of the Electro-Voice TL880D item
- rules of operation, control and maintenance of the Electro-Voice TL880D 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 Electro-Voice TL880D 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 Electro-Voice TL880D, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Electro-Voice 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 Electro-Voice TL880D.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Electro-Voice TL880D 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
TL880D V ery-Low-Fr equency Speaker System • Designed for cinema subwoofer use • High acoustic output to below 20 Hz • T wo EVX-180A woofers provide ver y high peak and long-term output that complements the dynamic potential of digital sound on film • 2,000 watts continuous program • Side-mounted connection panel facilitates hookup when d[...]
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Page 2
TL880D Very-Low-Frequency Speaker System TL880D Very-Low-Frequency Speaker System Specifically , the TL880D is designed to with- stand the power test described in ANSI/EIA RS-426-A 1980. The EIA test spectrum is applied for eight hours. The spectrum is ob- tained by filtering white noise (a particular type of random noise with equal energy per band[...]
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Page 3
TL880D Very-Low-Frequency Speaker System Bug right Figure 1—TL880D Axial Fr equency Response (anechoic environment, 1 watt/1 meter) product data sheet or owner’s manual; (d) malfunction resulting from misuse or abuse of the product; or (e) malfunction occurring at any time after repairs have been made to the product by anyone other than EVI Au-[...]
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Page 4
TL880D Very-Low-Frequency Speaker System TL880D Very-Low-Frequency Speaker System Figure 2—TL880D One-Third-Octave Polar Responses (anechoic environment) HORIZONT AL VER TICAL[...]
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Page 5
TL880D Very-Low-Frequency Speaker System TL880D Very-Low-Frequency Speaker System FIGURE 4—TL880D One-Third- Octave Directivity vs Frequency (anechoic environment) FIGURE 5—TL880D Harmonic Distortion, 0.1 Rated Power Input (120 watts), 10 Feet on Axis FIGURE 3—TL880D One-Third- Octave Beamwidth vs Frequency (anechoic environment)[...]
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Page 6
TL880D Very-Low-Frequency Speaker System TL880D Very-Low-Frequency Speaker System SPEAKERS—Low-Frequency Systems Part Number 534147—9703 600 Cecil Street, Buchanan, MI 49107 616/695-6831, 616/695-1304 Fax Specification Frequency Response, 1 W att at 1 Meter on Axis, Swept One-Third-Octave Pink Noise, Anechoic Environment (see Figure 1): 23-1,80[...]