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The rules should oblige the seller to give the purchaser an operating instrucion of JBL Professional 42C, 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 Professional 42C 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 Professional 42C. 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.
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First and foremost, an user manual of JBL Professional 42C should contain:
- informations concerning technical data of JBL Professional 42C
- name of the manufacturer and a year of construction of the JBL Professional 42C item
- rules of operation, control and maintenance of the JBL Professional 42C 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 Professional 42C 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 Professional 42C, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the JBL Professional 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 Professional 42C.
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 Professional 42C 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
User’ s Guide C o n t r o l ® 4 7 C / T C o n t r o l ® 4 7 L P C o n t r o l ® 4 7 H C C o n t r o l ® 4 2 C C o n t r o l ® 4 0 C S / T[...]
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T ABLE OF CONTENTS JBL Prof essional Control Contractor 40 Series Product Description....................................................1 Product Feature Identification...................................2 Control 40 Series Preparation...................................3 Control 40 Series Installation....................................4 Wiring In[...]
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Page 3
1 Control 47C/T features extended bass performance with a wide 120° of cov erage that allo ws f ew er speakers to co ver a large space. Ideal f or a wide variety of applications, the Control 47C/T is perf ect f or settings r anging from restaurant and retail to large casinos and bey ond. Control 47LP is a low-profile model intended for locations [...]
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PR ODUCT FEA TURE IDENTIFICA TION 2 JBL Prof essional Control Contractor 40 Series Integrated Bac k Can Conical RBI ® W a veguide T uning P or t Suspension T abs (Control 47C/T & 47HC models only) (Control 47C/T Shown) T wo-Landing Dog Ear T weeter T ransf ormer T ap / Bypass (located inside wa veguide aperture) Input Connectors (located insid[...]
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Page 5
The installation of the Control Contractor 40 Series in- ceiling loudspeakers can be accomplished, if necessar y , without requiring access abov e the ceiling. Brack etry for use with either suspended ceilings or sheetroc k ceilings is included ( see below for additional details on the Control 42C ). The loudspeak er is held securely in place via m[...]
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The installation system has been designed so that the entire installation can be accomplished from beneath the ceiling, f or instances when access abov e the tile is not possible or practical. Howe ver , in some cases it may be easier with remov ab le ceiling tiles to access from both the top and bottom of the ceiling tile during various phases of [...]
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5 JBL Prof essional Control Contractor 40 Series WIRING INSTR UCTIONS Control Contractor 40 Ser ies in-ceiling loudspeakers include Eurobloc k locking input connectors that allow the system to be “pre-wired”. Connecting the Wiring to the Eurob lock -- Connect the wiring to the remo v ab le loc king connect or that is INCLUDED with the speak er [...]
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WIRING INSTR UCTIONS, CON’T 6 JBL Prof essional Control Contractor 40 Series Hookup Schemes f or Subsequent Speakers Using Loop-Through T erminals -- By connecting the wire pair of a subsequent speakers to the “Loop Thru” on the Control 40 Ser ies Loudspeakers all subsequent speakers will be disconnected when this speak er’ s connector is d[...]
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P AINTING & CONT A CTING JBL P AINTING CONTROL CONTRA CT OR 40 SERIES LOUDSPEAKERS The tr im r ing and grille of Control Contractor 40 Series loudspeakers can be painted to match almost any decor . The speaker’ s polystyrene rim accepts almost any type of late x or oil based paint. F or best results, the f ollo wing procedure is recommended: [...]
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Control 47C/T : F requency Range (-10 dB) 1 : 55 Hz - 20 kHz Frequency Response (± 3 dB) 1 : 75 Hz - 17 kHz P ower Capacity 2 : 150 W atts Continuous Program P ow er 75 W atts Continuous Pink Noise Nominal Sensitivity (2.83V/1m) 1 : 91 dB Nominal Cov erage Angle 3 : 120° coni cal c ov er age Directivity F actor (Q) 3 : 6.5 Directivity Index (DI) [...]
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9 JBL Prof essional Control Contractor 40 Series SPECIFICA TIONS Control 47HC: F requency Range (-10 dB) 1 : 55 Hz - 17 kHz Frequency Response (± 3 dB) 1 : 70 Hz - 14 kHz P ower Capacity 2 : 150 W atts Continuous Program P ow er 75 W atts Continuous Pink Noise Nominal Sensitivity (2.83V/1m) 1 : 93 dB Nominal Cov erage Angle 3 : 75° coni cal c ov [...]
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440921-004 8500 Balboa Boule vard Nor thridge, CA 91329 USA Visit us online at www .jblpro .com 09/08 Control 40CS/T : F requency Range (-10 dB) 1 : 30 Hz - 300 Hz Frequency Response (± 3 dB) 1 : 50 Hz - 180 Hz P ower Capacity 2 : 200 W atts Continuous Program P ow er 100 W atts Continuous Pink Noise Nominal Sensitivity (2.83V/1m) 1 : 95 dB (near [...]