Summary of the content on the page No. 1
3 0 0 S e r i e s
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
User’s Guide
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
Summary of the content on the page No. 2
TABLE OF CONTENTS 3 Product Description 4 Product Feature Identification 5 Wiring Instructions 7 Control 328C/CT System Assembly 8 Control 321C/CT, Control 322C/CT & Control 312CS System Assembly 10 Painting the Grille 10 Maintenance 10 Accessories 10 Contacting JBL Professional 11 Specifications JBL Professional Control 300 Series
Summary of the content on the page No. 3
PRODUCT DESCRIPTION ® JBL Professional Control 300 Large Format, In-Ceiling Loudspeakers are designed from the ground up to provide optimal performance for the most demanding installed sound applications. Thanks to the conical constant coverage waveguide design, Control 300 Series Loudspeakers feature exceptional broadband control ensuring extremely even coverage and remarkably consistent performance. The Control 321C/CT, 322C/CT, 328C/CT and 312CS represent the state of the art in in-cei
Summary of the content on the page No. 4
PRODUCT FEATURE IDENTIFICATION (Control 322CT Shown) Transformer Compression Crossover Driver Network Tuning Port Tube Woofer Frame Baffle EZ-Rail™ Dust Cap Crossover Network Woofer Tuning Port Tube Baffle Tuning Port 4 JBL Professional Control 300 Series
Summary of the content on the page No. 5
ORANGE ORANGE PURPLE PURPLE BLUE BLUE WHITE WHITE BLACK BLACK WIRING INSTRUCTIONS Control 300 Series Loudspeakers include Euroblock or Guide to Connection Pins on Low Impedance Models Phoenix-type locking input connectors that allow the system (Control 321C, 322C, 328C & 312CS) -- The removable to be “pre-wired” before the speakers are installed into their locking input connector contains 4 terminals, as marked on respective back cans and backboxes. the connector. The pin functions for the C
Summary of the content on the page No. 6
WIRING INSTRUCTIONS Figure B: Parallel System Hookup Diagram + - 1 2 3 4 1 2 3 4 1 2 3 4 + - Speaker 1 Speaker 2 Speaker 3 Power Amp 2.) Using Loop-Through Terminals (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 during troubleshooting . This can be useful as a way to isolate problems to a section of the distributed line while leaving the wires attached
Summary of the content on the page No. 7
CONTROL 328C/CT SYSTEM ASSEMBLY Ceiling Preparation - Cut a 12.2 inch (310 mm) diameter hole in the ceiling to allow sufficient room for the IMPORTANT! loudspeaker baffle. When installing the MTC-300BB8 with a Assembling the Control 328C/CT into the Back Can Control 328C/CT, - After inserting the Control 328C/CT into the back can, see “Securing Speaker align the mouting holes without weld nuts to the holes with Assembly to the Building clip nuts on the back can. These are the mount
Summary of the content on the page No. 8
CONTROL 321C/CT, 322C/CT & 312CS SYSTEM ASSEMBLY MTC-300BB12 Back Box Shown as Cut-Away for Clarity Loudspeaker Pre-Mounted Metal Baffle Assembling the Control 321C/CT, 322C/CT or 312CS 1 into the Back Box - First, line up the EZ-Rail™ with one of the back box flanges containing a singular mounting hole. For orientation when holding the speaker overhead, two (2) embossed arrows on the underside of the metal baffle indicate the edge with the EZ-Rail. Next, slide the EZ-Rail onto the flan
Summary of the content on the page No. 9
CONTROL 321C/CT, 322C/CT & 312CS SYSTEM ASSEMBLY Ceiling Preparation - Cut a 14.9 x 14.9 inch (378 x 378 mm) hole in the ceiling to allow sufficient room for the loudspeaker baffle. IMPORTANT! Using JBL Professional’s MTC-300BB12 When installing the Back Box -- The MTC-300BB12 is MTC-300BB12 with compatible with two common mounting a Control 321C/CT, systems for installing the loudspeaker 322C/CT & 312CS / baffle to the back box; either of these models see “Securing Speaker Assembly
Summary of the content on the page No. 10
ACCESSORIES, MAINTENANCE & CONTACTING JBL Painting the Grille -- Control 300 Series Grilles feature Contacting JBL Professional -- These products are a powder coated, satin finish paint (RAL 9016 - Pantone designed and backed by JBL Professional, the world equivalent 11-0602TPX) and can be painted to match any leader in professional sound reinforcement. For complete decor. This should only be done when the grilles have warranty information, to order replacement parts or to ask for been rem
Summary of the content on the page No. 11
SPECIFICATIONS Control 328C/CT 1 Frequency Range (-10 dB) : 45 Hz – 18 kHz LISTED 1 General Signaling Frequency Response (±3 dB) : 60 Hz – 16 kHz Equipment 2 Coverage Pattern : 120º conical, broadband (Avg 1k - 16kHz) 15CM 3 Long-Term System Power Rating, IEC : 250 W (1600 W peak), 2 hrs 150 W (1000 W peak), 100 hrs 4 Sensitivity (2.83V@ 1m): 93 dB measured half-space Nominal Impedance : 8 ohms (328C) Transformer Taps : 100V : 68W, 34W & 17W (plu
Summary of the content on the page No. 12
3 0 0 S e r i e s 8500 Balboa Boulevard Northridge, CA 91329 USA Visit us online at www.jblpro.com 363816-001
