Control 322C

High-output 12 in. Coaxial Ceiling Loudspeaker

Control 322C
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High-output 12 in. Coaxial Ceiling Loudspeaker

The Control 322C delivers exceptional next-generation performance in a coaxial point source design
ceiling loudspeaker.

Features

  • Consistent 90° broadband pattern control.
  • Components
    • Kevlar-reinforced 300 mm (12 in) woofer with 75 mm (3 inch) voice-coil cone.
    • Medium-format compression driver.
  • Extraordinary clarity for speech and vocals with extended frequency response for music.
  • Power handling of 400 Watts 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

Specifications
  Size Uploaded
file type icon Control 322C/CT Spec Sheet
updated: Apr 2019
350 KB Apr 2019
Manuals
  Version Size Uploaded
file type icon Ceiling Speaker Accessory Guide
version B, updated: Jan 2024
231 KB Jan 2024
  128 KB Oct 2019
Brochures
  Version Language Size Uploaded
file type icon Control Contractor Brochure (2025)
en version A, updated: Mar 2026
en  23 MB Mar 2026
file type icon Control Contractor Brochure (2024)
en version D, updated: Feb 2024
en  14 MB Feb 2024
file type icon Control 300 Brochure
updated: Apr 2019
    2.9 MB Apr 2019
  en  21 MB Mar 2026
CAD Drawings
  Size Uploaded
file type icon Control 300 Ceiling Speakers
updated: Oct 2019
1.39 MB Oct 2019
Compliances
  Size Uploaded
179 KB Dec 2019
92.7 KB Oct 2019
Software
  Version Size Uploaded
Windows download icon Distributed System Design (DSD)
version 3.9, updated: Nov 2025
3.9   612 KB Nov 2025
Simulation Data
  Size Uploaded
21 MB May 2024
Ease Files
  Size Uploaded
file type icon Control 300 Series GLL Files
updated: May 2024
1.08 MB May 2024
User Guides
  Size Uploaded
file type icon Control 300 User Guide
updated: Apr 2019
2.02 MB Apr 2019
Speaker Tunings
  Version Size Uploaded
file type icon Commercial, CBT, and AWC Tunings 220616
version A, updated: May 2023
557 KB May 2023
Install Guides
  Size Uploaded
574 KB Apr 2019

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Parts & Service

Specifications

Frequency Range (-10dB) 32 Hz – 20 kHz
Power Rating IEC Long-Term System Power Rating:
400 W continuous pink noise (1600 W peak), 2 hrs 250 W continuous pink noise (1000 W peak), 100 hrs
Sensitivity 95 dB (1 kHz - 16 kHz)
Frequency Response (±3 dB) 48 Hz – 19 kHz
Coverage Angle 90° conical, constant directivity
Directivity Factor (Q) 9 (1k - 16kHz)
Directivity Index (DI) 9.5dB (1k - 16kHz)
Crossover Network 1.4 kHz, 3rd order (18 dB/oct) high-pass plus conjugate to HF, 2nd order low-pass to LF
Impedance 8 ohms
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 223 mm (8.8 in)
Maximum SPL (1m) 121 dB (127 dB peak)
Input Connectors Screw locking barrier strip for bare wire
Drivers LF Driver: 300 mm (12 in)
HF Driver: compression driver, 37 mm (1.5 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)
Optional Accessories MTC-300SG12 Grille, square contoured, white. MTC-300BB12 Backbox, 80 liters (3 cubic feet) MTC-300T150 Transformer, 150 W for use with 322C.
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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MTC-300BB12 detail thumbnail #1

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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MTC-300SG12 detail thumbnail #1

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
Larger Images
MTC-300T150 detail thumbnail #1

150 Watt Transformer

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


Documentation

Support/FAQs

HARMAN Professional Solutions: