Control 321CT

12 in. Coaxial Ceiling Loudspeaker with HF Compression Driver

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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.

Recursos

  • 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

Specifications
  Tamanho Enviado
file type icon Control 321C/CT12 Spec Sheet
atualizado: abr 2019
1,47 MB abr 2019
Manuals
  Tamanho Enviado
59,2 KB out 2019
15,4 KB out 2019
Brochures
  Versão Idioma Tamanho Enviado
file type icon Control Contractor Brochure (2025)
en versão A, atualizado: mar 2026
en  23 MB mar 2026
file type icon Control 300 Brochure
atualizado: abr 2019
    2,9 MB abr 2019
file type icon Control Contractor Brochure (2026)
en atualizado: mar 2026
  en  21 MB mar 2026
CAD Drawings
  Tamanho Enviado
file type icon Control 300 Ceiling Speakers
atualizado: out 2019
1,39 MB out 2019
Compliances
  Tamanho Enviado
179 KB dez 2019
92,7 KB out 2019
Software
  Versão Tamanho Enviado
Windows download icon Distributed System Design (DSD)
versão 3.9, atualizado: nov 2025
3.9   612 KB nov 2025
EASE Files
  Tamanho Enviado
file type icon Control 300 Series GLL Files
atualizado: mai 2024
1,08 MB mai 2024
User Guides
  Tamanho Enviado
file type icon Control 300 User Guide
atualizado: abr 2019
2,02 MB abr 2019
Accessories
  Versão Tamanho Enviado
file type icon Ceiling Speaker Accessory Guide
versão 2026-04, atualizado: mai 2026
2026-04  570 KB mai 2026
Install Guides
  Tamanho Enviado
574 KB abr 2019

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Peças e Serviços

Especificações

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)
RESPOSTA EM FREQUÊNCIA (±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)
Sensibilidade 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
DIMENSÕES (AxLxP) 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)
CONEXÕES DE ENTRADA Screw locking barrier strip for bare wire
Drivers LF Driver: 300 mm (12 in)
HF Driver: compression driver, 25 mm (1 inch) coil
Cor 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)
Acessórios Inclusos 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

Acessórios

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.

Documentação
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.

Documentação
MTC-300T150 | 150 Watt Transformer
MTC-300T150 Main photo
Imagens Grandes
MTC-300T150 detail thumbnail #1

150 Watt Transformer

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


Documentação

Suporte/FAQs

HARMAN Professional Solutions: