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Description of the Control 321C/CT coaxial loudspeaker, detailing its 12” Kevlar cone and 2412 Compression Driver.
Details on the Control 322C/CT coaxial loudspeaker with a 12” Kevlar cone and 2407H Compression Driver for higher power handling.
Overview of the Control 328C/CT coaxial loudspeaker featuring an 8” Kevlar cone and 2412 Compression Driver.
Information on the Control 312CS, an 8 ohm, 12” Kevlar-reinforced cone loudspeaker for extended bass.
Guide to connecting pins on transformer models like Control 328CT, 321CT, and 322CT for 70V/100V systems.
Guide to connecting pins on low impedance models like Control 321C, 322C, 328C, and 312CS.
Details on two hookup schemes for subsequent speakers: paralleling input terminals and using loop-through terminals.
Instructions for ceiling preparation, including cutting the correct diameter hole for loudspeaker baffle installation.
Steps for assembling the Control 328C/CT into the back can, aligning mounting points and securing the baffle.
Procedure for assembling Control 321C/CT, 322C/CT, or 312CS loudspeakers into the back box using EZ-Rail.
Instructions for ceiling preparation for Control 321C/CT, 322C/CT, & 312CS, including hole size.
Guidance on using the JBL MTC-300BB12 back box for installing the loudspeakers, including mounting systems.
Instructions for using a different brand compatible back box with the loudspeakers, matching mounting systems.
Guidelines for painting loudspeaker grilles, recommending spray techniques to avoid clogging perforations.
Information stating that no maintenance is required when assembled per manual instructions.
List of optional accessories available for the Control 300 Series loudspeakers, including grilles, backboxes, and transformers.
Information on how to contact JBL Professional for warranty, parts, or clarifications, including US and international contact details.
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