Control 328CT

8" Coaxial Ceiling Loudspeaker with HF Compression Driver

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8" Coaxial Ceiling Loudspeaker with HF Compression Driver

Control 328CT has been engineered from the ground up to deliver exceptional next-generation performance in a coaxial point source design ceiling loudspeaker.

Características

  • Consistent 120° broadband pattern control covers an extremely large area.
  • Shaped mounting baffle provides the pattern control of a 300 mm (12 in) horn from a 200 mm (8 in) driver.
  • Components
    • 200 mm (8 in) woofer with Kevlarreinforced cone and 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 very 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.

Descarregamentos

Documentos
  Idioma Tamanho Carregado
file type icon Control 300 Brochure
en atualizado: abr 2026
en  3 MB abr 2026
file type icon Control 328C_CT Spec Sheet
en atualizado: abr 2026
en  700 KB abr 2026
file type icon Control 328C-CT Backcan Assembly Instructions
en atualizado: abr 2026
en  500 KB abr 2026
file type icon Control 300 Transformer Bypass
en atualizado: abr 2026
en  60 KB abr 2026
file type icon Control 300 Transformer Insertion Loss
en atualizado: abr 2026
en  20 KB abr 2026
file type icon Control 300 User Guide
en atualizado: abr 2026
en  2 MB abr 2026
Specifications
  Tamanho Carregado
file type icon Control 328C/CT Spec Sheet
atualizado: abr 2019
700 KB abr 2019
Manuals
  Tamanho Carregado
60 KB out 2019
20 KB out 2019
Brochures
  Versão Idioma Tamanho Carregado
file type icon Control Contractor Brochure (2025)
en versão A, atualizado: mar 2026
en  20 MB mar 2026
file type icon Control 300 Brochure
atualizado: abr 2019
    3 MB abr 2019
file type icon Control Contractor Brochure (2026)
en atualizado: mar 2026
  en  20 MB mar 2026
CAD Drawings
  Tamanho Carregado
file type icon Control 300 Ceiling Speakers
atualizado: out 2019
1 MB out 2019
Compliances
  Tamanho Carregado
200 KB dez 2019
90 KB out 2019
Software
  Versão Tamanho Carregado
Windows download icon Distributed System Design (DSD)
versão 3.9, atualizado: nov 2025
3.9   600 KB nov 2025
User Guides
  Tamanho Carregado
file type icon Control 300 User Guide
atualizado: abr 2019
2 MB abr 2019
EASE Files
  Tamanho Carregado
file type icon Control 300 Series GLL Files
atualizado: mai 2024
1 MB mai 2024
Accessories
  Versão Tamanho Carregado
file type icon Ceiling Speaker Accessory Guide
versão 2026-04, atualizado: mai 2026
2026-04  600 KB mai 2026
Speaker Tunings
  Versão Tamanho Carregado
file type icon Commercial, CBT, and AWC Tunings 220616
versão A, atualizado: mai 2023
600 KB mai 2023
Install Guides
  Tamanho Carregado
file type icon Control 328C/CT Assembly Guide
atualizado: abr 2019
500 KB abr 2019

Se algum dos links acima resultar em caracteres estranhos no seu navegador, clique com o botão direito no ficheiro para o guardar no seu computador.

Peças e serviço

Especificações

Frequency Range (-10dB) 45 Hz – 18 kHz
Power Rating See transformer taps
Transformer Taps 68W, 34W, 17W, (& 8.5W @ 70V)
Frequency Response (±3 dB) 60Hz – 16 kHz
Coverage Angle 120° conical, constant directivity
Impedance 8 ohms
Directivity Factor (Q) 7.0 (Avg 1k - 16kHz)
Directivity Index (DI) 8.5dB (Avg 1k - 16kHz)
Sensitivity 93 dB (1 kHz - 16 kHz)
Maximum SPL (1m) 118 dB (top 70V/100V tap)
Crossover Network 1.9 kHz, 3rd order (18 dB/oct) high-pass plus conjugate
Dimensions (H x W x D) 305 mm (12.0 in.) diameter round baffle x depth from back of baffle of 218 mm (8.6 in)
Input Connectors Screw locking barrier strip for bare wire
Drivers LF Driver: 200 mm (8 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-300BB8. S7232/UL Listed, Signaling Speaker. Transformer UL registered per UL1876. In accordance with IEC60849/EN60849.
Backcan formed steel (wood-lined; accessory)
Baffle/Rim Metal, round, driver pre-mounted to baffle, ported.
Ceiling Cutout Size 310 mm (12.2 in) diameter (for MTC-300BB8 backcan)
Included Accessories Ported baffle pre-attached, plus transformer on 328CT.
Optional Accessories MTC-RG6/8 Grille, round contoured, white. MTC-SG6/8 Grille, square, contoured, white. MTC-300BB8 Backbox, 25 liters (1 cubic feet)
Plenum Usage Yes, with accessory backcan

Acessórios

MTC-RG6/8 | Round Grille for Control 200 and Control 300 Series
MTC-RG6/8 Main photo
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MTC-RG6/8 detail thumbnail #1

Round Grille for Control 200 and Control 300 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-SG6/8 | Square Grille for Control 200 and Control 300 Series
MTC-SG6/8 Main photo
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MTC-SG6/8 detail thumbnail #1

Square Grille for Control 200 and Control 300 Series

 

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

Documentação
MTC-TB6/8 | Tile Bridge for Control 200 and Control 300 Series
MTC-TB6/8 Main photo
Imagens maiores
MTC-TB6/8 detail thumbnail #1 MTC-TB6/8 detail thumbnail #2

Tile Bridge for Control 200 and Control 300 Series

 

  • Robust 18-gauge steel construction with an epoxy based powdercoat finish.
  • Over-The-Grid design reduces sound transmission to ceiling grid thereby minimizing rattle.
  • 310 mm (12.2 inch) opening accommodating both Control 328C/CT and Control 227C/CT models.
  • Fits 610 mm (24 inch) and 600 mm (23.6 inch) tile grids.

Documentação
MTC-300BB8 | 1 Cubic Ft. Backcan for Control 300 Series 8 in. Drivers
MTC-300BB8 Main photo
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MTC-300BB8 detail thumbnail #1

1 Cubic Ft. Backcan for Control 300 Series 8 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 side.

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

150 Watt Transformer

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


Documentação

Notícias

Apoio/FAQ

HARMAN Professional Solutions: