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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Electro-Voice EVF-1152S/94, 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.
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Unfortunately, only a few customers devote their time to read an instruction of Electro-Voice EVF-1152S/94. 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 EVF-1152S/94 should contain:
- informations concerning technical data of Electro-Voice EVF-1152S/94
- name of the manufacturer and a year of construction of the Electro-Voice EVF-1152S/94 item
- rules of operation, control and maintenance of the Electro-Voice EVF-1152S/94 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
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Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Electro-Voice EVF-1152S/94 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 EVF-1152S/94, 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 EVF-1152S/94.
Why one should read the manuals?
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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
EVF-1152S/94 Single 15” T wo-Way 90° x 40° Full-Range Loudspeak er System General Description: T echnical Specifications: Key Features: ND2B 2” (51mm) Diaphragm, 1.4” (36mm) Exit • Pure Titanium Compression Driver SMX2151 15” (381mm) LF T ransducer with Fully • Symmetric Drive Advanced 4 • th Order Crossover Network with HF Protecti[...]
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Page 2
20000 10000 1000 100 20 0 10 20 30 1 10 100 1000 Frequ ency (Hz) Directivity Index (DI), dB Directivity Factor (Q) 20 100 1000 10000 20000 360 100 20 3.6 Horizontal Vertical Frequ ency (Hz) -6dB Beamwidth (degrees) 50 20000 10000 1000 100 50 20 316 100 10 3.16 70 80 90 100 110 Frequ ency (Hz) Sensitivity (dB) Impedance (Ohms) Passive Mode, Half Spa[...]
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Page 3
Polar Plots (1/3 Octave) : Engineering Data Sheet Horizontal = Black Vertical = Grey 400 H z 500 H z 630 H z 800 H z 1 KHz 1.25 K H z 1 . 6 KHz 2 KHz 2 . 5 KHz 3.15 K H z 4 KHz 5 KHz 6 . 3 KHz 8 KHz 1 0 KHz 12.5 K H z 1 6 KHz 2 0 KHz[...]
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Page 4
12000 Portland Avenue South, Burnsville, MN 55337 Phone: 952/884-4051, Fax: 952/884-0043 w w w .electrovoice.com © Bosch Communications Systems 04/2009 Part Number LIT000342094 Rev A U.S.A. and Canada only. For customer orders, contact Customer Service at: 800/392-3497 Fax: 800/955-6831 Europe, Africa, and Middle East only. For customer orders, co[...]