Control 321CT

12 in. Coaxial Ceiling Loudspeaker with HF Compression Driver

Control 321CT
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12 in. Coaxial Ceiling Loudspeaker with HF Compression Driver

The Control 321CT has been engineered from the ground up to deliver exceptional next-generation performance in a coaxial point source design ceiling loudspeaker.

Features

  • Consistent 90° broadband pattern control.
  • Components
    • 300 mm (12 in) woofer with Kevlar-reinforcedcone with 50 mm (2 in) voice-coil.
    • 25 mm (1 exit) compression driver.
  • Extraordinary clarity for speech and vocals with extended frequency response for music.
  • 250 Watt power handling with high sensitivity provides high SPL capability.
  • Advanced high-slope crossover network for constant coverage and smooth, natural midrange.
  • Clean, contemporary grille and optional backbox available.

Downloads

  Version Language Size Uploaded
Specifications
file type icon Control 321C/CT12 Spec Sheet
updated: Apr 29, 2019
    1.47 MB Apr 29, 2019
Manuals
file type icon Ceiling Speaker Accessory Guide
updated: Oct 18, 2019
    127 KB Oct 18, 2019
file type icon Control 300 Series Transformer Insertion Loss Chart
updated: Oct 18, 2019
    15.4 KB Oct 18, 2019
file type icon Transformer Bypass on Control 321CT, Control 322CT, or Control 328CT
updated: Oct 18, 2019
    59.2 KB Oct 18, 2019
Brochures
file type icon Control 300 Brochure
updated: Apr 29, 2019
    2.9 MB Apr 29, 2019
CAD Drawings
file type icon Control 300 Ceiling Speakers
updated: Oct 18, 2019
    1.39 MB Oct 18, 2019
Compliances
file type icon Control 300 Series Declaration of Conformity
updated: Oct 18, 2019
    92.7 KB Oct 18, 2019
file type icon JBL Control Series Passive Speakers DoC
updated: Dec 17, 2019
    179 KB Dec 17, 2019
Software
platform icon Distributed System Design (DSD) v3.6.2
version 3.6.2, updated: Sep 23, 2021
3.6.2     805 KB Sep 23, 2021
Install Guides
file type icon Control 321 & 322 Installation Guide
updated: Apr 29, 2019
    574 KB Apr 29, 2019

If any of the links above result in strange characters in your browser, please right-click the file to save it to your computer.

Specifications

Frequency Range (-10dB) 34 Hz – 18 kHz
Power Rating IEC Long-Term System Power Rating: 250 W continuous pink noise (1000 W peak), 2 hrs 200 W continuous pink noise (800 W peak), 100 hrs
Transformer Taps 68W, 34W, 17W, (& 8.5W @ 70V)
Frequency Response (±3 dB) 47 Hz – 16 kHz
Coverage Angle 90° conical, constant directivity
Directivity Factor (Q) 8.7 (1k - 16kHz)
Directivity Index (DI) 9.4 dB (1k - 16kHz)
Sensitivity 94 dB (1 kHz - 16 kHz)
Crossover Network 1.8 kHz, 3rd order (18 dB/oct) high-pass plus conjugate to HF, 2nd order low-pass to LF
Dimensions (H x W x D) 366 x 366 mm (14.4 x 14.4 in) square baffle x depth from back of baffle of 240 mm (9.5 in)
Maximum SPL (1m) 118 dB (top 70V/100V tap)
Input Connectors Screw locking barrier strip for bare wire
Drivers LF Driver: 300 mm (12 in)
HF Driver: compression driver, 25 mm (1 inch) coil
Color White
Safety Agency Suitable for use in air handling spaces per UL1480, UL2043, NFPA90 & NFPA 70 when installed with UL listed backcan such as JBL MTC-300BB12. S7232/UL Listed, Signaling Speaker. Transformer UL registered per UL1876. In accordance with IEC60849/EN60849.
Backcan formed steel (wood-lined; accessory)
Baffle/Rim Metal, driver pre-mounted to baffle, ported.
Ceiling Cutout Size 378 x 378 mm (14.9 x 14.9 in) (for MTC-300BB12 backcan)
Included Accessories Ported baffle pre-attached, transformer on 321CT.
Optional Accessories MTC-300SG12 Grille, square contoured, white. MTC-300BB12 Backbox, 80 liters (3 cubic feet) MTC-300T150 Transformer, 150 W for use with 321C.
Plenum Usage Yes, with accessory backcan

Accessories

MTC-300BB12 | 3 Cubic Ft. Backbox for Control 300 Series 12 in. Drivers
MTC-300BB12 Main photo
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3 Cubic Ft. Backbox for Control 300 Series 12 in. Drivers

Professional Series

  • Extra-thick 16 gauge metal construction.
  • Lined with 12 mm (½ inch) thick MDF to eliminate resonances and to provide extra bass response.
  • Knockouts on top and all four sides.
  • Dual mounting system for baffle.
  • Mounting platform for an optional high-power 70V/100V transformer.

Documentation
MTC-300SG12 | Square Grille for Control 300 Series 12 in. Drivers
MTC-300SG12 Main photo
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Square Grille for Control 300 Series 12 in. Drivers

Professional Series

  • Rugged 19 gauge metal construction for enduring reliability.
  • Sculpted design for an elegant appearance and perfect for any decor or architectural setting.
  • Zinc underplating provides a rust and scratch resistant surface for years of maintenance free wear.
  • Powder coat final finish minimizes scratching and can easily be repainted to match any room color.

Documentation
MTC-300T150 | 150 Watt Transformer
MTC-300T150 Main photo
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150 Watt Transformer

For use on either 70V or 100V distributed loudspeaker lines.


Documentation

Support/FAQs

Control 321CT

12 in. Coaxial Ceiling Loudspeaker with HF Compression Driver