Go to page of
A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of JBL 300 Series, 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 JBL 300 Series 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 300 Series. 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 300 Series should contain:
- informations concerning technical data of JBL 300 Series
- name of the manufacturer and a year of construction of the JBL 300 Series item
- rules of operation, control and maintenance of the JBL 300 Series 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 300 Series 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 300 Series, 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 300 Series.
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 300 Series 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
-
Page 1
C o n t r o l 3 2 1 C / C T C o n t r o l 3 2 2 C / C T C o n t r o l 3 2 8 C / C T C o n t r o l 3 1 2 C S User’ s Guide 300 Ser ies[...]
-
Page 2
T ABLE OF CONTENTS Product Description Product Feature Identification Wiring Instructions Control 328C/CT System Assembl y Control 321C/CT , Contr ol 322C/CT & Control 312CS System Assembl y P ainting the Grille Maintenance Accessories Contacting JBL Prof essional Specifications 3 4 5 7 8 10 10 10 10 11 JBL Prof essional Control 300 Series[...]
-
Page 3
3 Control 321C - A coaxial design that f eatures a 12” K evlar- reinf orced cone on the woofer coupled with JBL Prof essional’ s 2412 Compression Driver . The Contr ol 321CT offers the same driver compliment as the Control 321C b ut also includes a multi- tap transf or mer for use on 70V or 100V line distrib ution systems. Control 322C - A coax[...]
-
Page 4
4 JBL Prof essional Control 300 Ser ies PR ODUCT FEA TURE IDENTIFICA TION (Control 322CT Shown) T ransf or mer Compression Driver W oof er F rame Baffle Crossov er Network T uning P or t T ube EZ-Rail™ Baffle T uning P or t Crossov er Network Dust Cap W oof er T uning P or t T ube[...]
-
Page 5
5 JBL Prof essional Control 300 Ser ies WIRING INSTR UCTIONS Guide to Connection Pins on Low Impedance Models (Control 321C, 322C, 328C & 312CS) -- The remov able locking input connector contains 4 ter minals, as mar ked on the connector . The pin functions for the Control 328C, 328C and 322C are listed on the label located on the crossov er fr[...]
-
Page 6
6 JBL Prof essional Control 300 Ser ies WIRING INSTR UCTIONS 2.) Using Loop-Through T erminals (Pins 2 & 3) -- By connecting the wire pair of the subsequent speaker to pins 2 & 3, then all subsequent speakers will be disconnected when this speaker’ s connector is disconnected dur ing troubleshooting . This can be useful as a wa y to isola[...]
-
Page 7
CONTR OL 328C/CT SYSTEM ASSEMBL Y 7 JBL Prof essional Control 300 Ser ies Ceiling Preparation - Cut a 12.2 inch (310 mm) diameter hole in the ceiling to allow sufficient room for the loudspeaker baffle . Assembling the Control 328C/CT into the Back Can - After inser ting the Control 328C/CT into the back can, align the mouting holes without weld [...]
-
Page 8
8 JBL Prof essional Control 300 Ser ies CONTR OL 321C/CT , 322C/CT & 312CS SYSTEM ASSEMBL Y Assembling the Control 321C/CT , 322C/CT or 312CS into the Back Box - First, line up the EZ-Rail™ with one of the back box flanges containing a singular mounting hole . F or orientation when holding the speaker ov erhead, two (2) embossed arrows on th[...]
-
Page 9
CONTR OL 321C/CT , 322C/CT & 312CS SYSTEM ASSEMBL Y The backcan m ust be secured to the b uilding structure by qualified personnel in accordance with saf e installation practices . Use suspension mater ials, connection fixturing, and methods that are appropr iate f or the building structure and installation conditions. Emplo y a minimum 5:1 s[...]
-
Page 10
10 JBL Prof essional Control 300 Ser ies A CCESSORIES, MAINTENANCE & CONT A CTING JBL P ainting the Grille -- Control 300 Ser ies Grilles f eature a powder coated, satin finish paint (RAL 9016 - P antone equivalent 11-0602TPX) and can be painted to match any decor . This should only be done when the grilles hav e been remov ed from their louds[...]
-
Page 11
SPECIFICA TIONS 11 JBL Prof essional Control 300 Ser ies Control 328C/CT F requency Range (-10 dB) 1 : 45 Hz – 18 kHz F requency Response (±3 dB) 1 : 60 Hz – 16 kHz Cov erage P atter n 2 : 120º conical, broadband (Avg 1k - 16kHz) Long-T er m System Po wer Rating, IEC 3 : 250 W (1600 W peak), 2 hrs 150 W (1000 W peak), 100 hrs Sensitivity (2.8[...]
-
Page 12
363816-001 8500 Balboa Boule vard Nor thridge, CA 91329 USA Visit us online at www .jblpro .com 300 Ser ies[...]