Instruction/ maintenance manual of the product 321CT JBL
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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.
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 ai.
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.
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-Rai.
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 .
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 .
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 .
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 .
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.
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 .
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.
363816-001 8500 Balboa Boule vard Nor thridge, CA 91329 USA Visit us online at www .jblpro .com 300 Ser ies.
An important point after buying a device JBL 321CT (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought JBL 321CT yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data JBL 321CT - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, JBL 321CT you will learn all the available features of the product, as well as information on its operation. The information that you get JBL 321CT will certainly help you make a decision on the purchase.
If you already are a holder of JBL 321CT, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime JBL 321CT.
However, one of the most important roles played by the user manual is to help in solving problems with JBL 321CT. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device JBL 321CT along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
