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The rules should oblige the seller to give the purchaser an operating instrucion of JBL ES90CH, 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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The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of JBL ES90CH 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 JBL ES90CH. 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 JBL ES90CH should contain:
- informations concerning technical data of JBL ES90CH
- name of the manufacturer and a year of construction of the JBL ES90CH item
- rules of operation, control and maintenance of the JBL ES90CH 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 JBL ES90CH 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 JBL ES90CH, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the JBL 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 JBL ES90CH.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the JBL ES90CH 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
English ES 10, ES20, ES30, ES80, ES90, ES100, ES25C JBL ES SERIES OWNER’S GUIDE ® 33487_JBL_ES_Series_Eng 21/06/07 15:56 Side 1[...]
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Page 2
JBL ® ES SERIES For more than 60 years, JBL, Inc. has been providing audio equipment for concert halls, recording studios and movie theaters around the world and has become the hands-down choice of leading recording artists and sound engineers. With the JBL ES Series, innovative technologies such as titanium-laminate- dome tweeters, Elliptical Obl[...]
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Page 3
English INST ALLING FEET ES10, ES20, ES30 The supplied self-adhesive rubber feet may be attached to the bottom corners of your speakers to protect your furniture. CHANGING THE FEET ES80, ES90, ES100 The ES80, ES90 and ES100 feature attractive outboard feet, installed at the factory . However , if you would like to replace them with the less visible[...]
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Page 4
WIRING THE SY STEM IMPORT ANT : Make sure all equipment is turned off before making any connections. For speaker connections, use a high-quality speaker wire with polarity coding. The side of the wire with a ridge or other coding is usually considered positive polarity (i.e., + ). NOTE: If desired, consult your local JBL dealer about speaker wire a[...]
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Page 5
English ES10 ES20 ES30 ES80 Frequency Response (–3dB) 65Hz – 40kHz 60Hz – 40kHz 50Hz – 40kHz 45Hz – 40kHz Max. Recommended Amplifier Power* 100W 125W 150W 200W Power Handling (Continuous/Peak) 50W/200W 60W/240W 70W/280W 100W/400W Sensitivity (2.83V/1m) 86dB 86dB 88dB 90dB Nominal Impedance 8 Ohms 8 Ohms 8 Ohms 8 Ohms Crossover Frequencies[...]
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Page 6
Features, specifications and appearance are subject to change without notice. JBL is a trademark of Harman International Industries, Incorporated, registered in the United States and/or other countries. Elliptical Oblate Spheroidal, PolyPlas and Pro Sound Comes Home are trademarks of Harman International Industries, Incorporated. ® PRO SOUND COMES[...]