Tannoy CMS 803DC Q - 360W 8-inch Passive 2-Way 70V/100V Blind-Mount Ceiling Loudspeaker with Dual Concentric Driver and 90 x 90-Degree Coverage in White Finish

The Tannoy CMS 803DC Q is a high-performance, 360-watt passive ceiling loudspeaker designed for installation applications requiring wide bandwidth, high sensitivity, and superior sound clarity. Featuring Tannoy's third-generation Ceiling Monitor System (CMS 3.0), the CMS 803DC Q incorporates an 8" Dual Concentric point-source driver, leveraging Omnimagnet technology and a Torus Ogive waveguide. The combination of these technologies ensures consistent broadband directivity and improved high-frequency response, while delivering enhanced intelligibility and highly accurate, linear sound reproduction. The "Q" variant is specifically designed for high-ceiling applications, offering an extended waveguide that provides a tight and uniform 60-degree conical dispersion pattern, perfect for spaces that demand focused and controlled sound coverage.

Built with ease of installation in mind, the CMS 803DC Q features a blind-mount design with an acoustically enhanced zinc-plated steel back can, providing superior low-frequency performance while minimizing resonance. The loudspeaker is equipped with a self-aligning 5-way clamp system for quick and secure mounting. It also includes extra clamp extension to accommodate thicker ceiling panels and a locking mechanism to prevent over-tightening, ensuring that the speaker is mounted securely in place. The CMS 803DC Q also comes with a low-insertion loss 60W transformer that provides multiple taps for 70V and 100V line systems or 16-ohm direct input. The transformer's convenient front-panel rotary switch allows easy selection of the most suitable tap setting for any installation, ensuring optimal performance.

The CMS 803DC Q is optimized for use with LAB GRUPPEN LUCIA amplifiers, which support up to 8 CMS series loudspeakers per channel. It offers a frequency response of 47 Hz to 30 kHz (-3 dB) and a maximum SPL of 119 dB peak, ensuring powerful, clear, and dynamic sound output. With a nominal impedance of 16 ohms, the CMS 803DC Q integrates seamlessly into professional audio systems, delivering high-quality sound for both speech and music. The speaker is finished in a semi-matte white color, allowing it to blend unobtrusively into most environments. Optional accessories, such as the Arco designer grille and plaster (mud) ring, allow for professional custom installations. Additionally, the CMS 803DC Q is UL-1480 and UL-2043 certified, ensuring compliance with safety standards for commercial and residential spaces.

Features

• 360W peak power handling for powerful sound performance in high-ceiling installations
• 8" Dual Concentric driver with Omnimagnet technology for clear, intelligible sound
• 60° conical coverage pattern ensures tight, uniform sound dispersion in large spaces
• Torus Ogive waveguide improves high-frequency response and directivity
• Frequency response: 47 Hz - 30 kHz (-3 dB), with a maximum SPL of 119 dB peak
• Low-insertion loss 60W transformer with multiple taps for 70V, 100V, and 16-ohm direct input systems
• Acoustically enhanced zinc-plated steel back can for optimal low-frequency performance
• Self-aligning 5-way clamp system for quick and secure installation
• Paintable powder-coated steel mesh grille with dust protection
• Tile support rails and C-ring for secure mounting
• Nominal impedance of 16 ohms for easy integration into professional audio systems
• Optimized for use with LAB GRUPPEN LUCIA amplifiers, supporting up to 8 speakers per channel
• Includes C-ring, tile-bridge kit, paint mask, cut-out template, and grille
• Optional Arco designer grille and plaster (mud) ring for custom finishes
• Compliance: UL-1480, UL-2043, CE certified for safety and reliability
• Dimensions: Bezel diameter: 12.56 inches, Hole cutout diameter: 11.61 inches

Specifications

Performance

• Frequency response (-3 dB): 47 Hz - 30 kHz
• Frequency range (-10 dB): 40 Hz - 35 kHz BM Backcan
• Frequency range (-10 dB): 41 Hz - 35 kHz PI Backcan
• System sensitivity (1 W @ 1 m): 93 dB (1 W = 4 V for 16 Ohms)
• Nominal Coverage Angle: 60 degrees conical
• Power Handling:
  • Average: 90 W
  • Programme: 180 W
  • Peak: 360 W
  • Recommended Amplifier Power: 180 W @ 16 Ohms
  • Nominal Impedance (Lo, Z): 16 Ohms
• Rated maximum SPL:
  • Average: 113 dB
  • Peak: 119 dB
  • With THP60 - Average: 111 dB
• Transformer Taps (via front rotary switch):
  • 70 V: 60 W (83 Ω) / 30 W (165 Ω) / 15 W (330 Ω) / 7.5 W (660 Ω) / OFF & low impedance operation.
  • 100 V: 60 W (165 Ω) / 30 W (330 Ω) / 15 W (660 Ω) / OFF & low impedance operation.

Transducers

• Dual Concentric point source driver: 1 x 200 mm (8.0") Dual Concentric driver, using Omnimagnet technology
• Low Frequency: 44 mm (1.75") voice coil, treated multi fiber paper pulp cone
• High Frequency: 25 mm (1.00") PEI dome

Physical

• Enclosure:
  • Backcan: Zinc plated steel
  • Baffle: Reflex loaded UL 94V-0 rated ABS
  • Grille: Steel, with weather resistant coating
  • Safety Features: Safety ring located at rear of enclosure for load bearing safety bond
  • Clamping Design: Security toggle clamp Min / Max clamping range 9.5 mm (0.37") / 60 mm (2.36") Recommended clamp torque: 1.5 Nm
• Backcan Options:
  • Blind Mount (BM): N/A
  • Pre Install (PI): N/A
  • Cable Entry Options: Cable clamp & squeeze connector for conduit up to 22 mm
  • Conduit Knockouts on PI Backcan: N/A
  • Connectors: Removable locking connector with screw terminals with "loop through" facility
  • Compliance: UL-1480, UL-2043, CE
• Dimensions:
  • Bezel diameter: 12.56 inches
  • Front of ceiling to rear of backcan: 12.22 inches
  • Front of ceiling to top of safety loop: 12.90 inches
  • BM Model (Front of ceiling to rear of backcan): N/A
  • BM Model (Front of ceiling to top of safety loop): N/A
  • PI Model (Front of ceiling surface to rear of speaker unit): N/A
  • PI Model (Front of accessory backcan bezel to top of safety loop): N/A
  • Hole cutout diameter (all models): 11.61 inches
• Net Weight (ea): 18.74 lbs
  • CMS 803DC BM: N/A
  • CMS 803DC PI: N/A
  • PI Backcan: N/A
• Included Accessories: C-Ring, tile-bridge kit, paint mask, cut-out template, grille
• Optional Accessories: Plaster (mud) ring, Arco grille
• Packed Quantity: 2