Tannoy CMS 803DC BM - 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 BM is a full-bandwidth, 360-watt passive ceiling loudspeaker designed for high-performance audio applications that require powerful, clear sound with extended low-frequency response. Utilizing Tannoy's third-generation Ceiling Monitor System (CMS 3.0) technology, the CMS 803DC BM features an innovative 8" Dual Concentric point-source driver equipped with Omnimagnet technology and a Torus Ogive waveguide. This combination ensures consistent broadband directivity, enhanced intelligibility, and highly accurate sound reproduction across a wide frequency range. The speaker's frequency response from 47 Hz to 30 kHz (-3 dB) guarantees rich, full-range sound, making it an ideal solution for commercial installations such as corporate AV systems, retail spaces, and houses of worship.

Designed with ease of installation in mind, the CMS 803DC BM features a blind-mount system with an acoustically enhanced zinc-plated steel back can. This ensures optimal low-frequency performance while minimizing resonance. The loudspeaker is equipped with a self-aligning 5-way clamp system that allows for fast, secure mounting, with extra clamp extension to accommodate thicker ceiling panels. The speaker also includes a low-insertion loss 60W transformer with multiple taps for 70V and 100V line systems or 16-ohm direct input, making it highly flexible for various audio system configurations. The front-panel rotary switch allows for easy selection of the most appropriate tap setting, ensuring seamless integration into any project.

The CMS 803DC BM delivers powerful sound with a maximum SPL of 118 dB peak and a nominal impedance of 16 ohms, ensuring high output while maintaining clarity even at higher volumes. The speaker's design includes a paintable, powder-coated steel mesh grille with dust protection, ensuring that it remains unobtrusive and durable in both commercial and residential environments. Optional accessories such as the Arco designer grille and plaster (mud) ring provide additional customization for architectural integration. UL-1480 and UL-2043 certified, the CMS 803DC BM is a reliable, safe, and high-performance solution for any professional audio installation.

Features

• 360W peak power handling for powerful and clear sound performance in ceiling installations
• 8" Dual Concentric driver with Omnimagnet technology for consistent broadband directivity and enhanced intelligibility
• Torus Ogive waveguide improves high-frequency response and directivity
• Frequency response: 47 Hz - 30 kHz (-3 dB), with a maximum SPL of 118 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 fast, secure installation
• Paintable powder-coated steel mesh grille with dust protection
• Tile support rails and C-ring for secure mounting
• Dimensions: Bezel diameter: 12.56 inches, Hole cutout diameter: 11.61 inches
• 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

Specifications

Performance

• Frequency response (-3 dB): 47 Hz - 30 kHz BM Backcan
• 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): 92 dB (1 W = 4 V for 16 Ohms)
• Nominal Coverage Angle: 90 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: 112 dB
  • Peak: 118 dB
  • With THP60 - Average: 110 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): Complete with fixed backcan
  • Pre Install (PI): Separate backcan for pre-installation
  • Cable Entry Options: Cable clamp & squeeze connector for conduit up to 22 mm
  • Conduit Knockouts on PI Backcan: 3 Sets of horizontal positions 19 / 22 / 28 mm (0.75" / 0.87" / 1.10")
  • 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: N/A
  • Front of ceiling to top of safety loop: N/A
  • BM Model (Front of ceiling to rear of backcan): 12.22 inches
  • BM Model (Front of ceiling to top of safety loop): 12.90 inches
  • PI Model (Front of ceiling surface to rear of speaker unit): 4.94 inches
  • PI Model (Front of accessory backcan bezel to top of safety loop): 6.63 inches
  • Hole cutout diameter (all models): 11.61 inches
• Net Weight (ea):
  • CMS 803DC BM: 18.74 lbs
  • CMS 803DC PI: 11.02 lbs
  • PI Backcan: 9.25 lbs
• Included Accessories: C-Ring, tile-bridge kit, paint mask, cut-out template, grille
• Optional Accessories: Plaster (mud) ring, Arco grille
• Packed Quantity: 2