Tannoy CMS 503DC PI - 240W 5-inch Passive 2-Way 70V/100V Pre-Install Ceiling Loudspeaker with Dual Concentric Driver and 90 x 90-Degree Coverage in White Finish

The Tannoy CMS 503DC PI is a full-bandwidth 240-watt passive ceiling loudspeaker, designed for a variety of professional installation applications where both high-performance sound and flexibility in mounting are required. Featuring Tannoy's third-generation CMS 3.0 technology, this loudspeaker incorporates a 5" Dual Concentric point-source driver with Omnimagnet technology and a Torus Ogive waveguide, delivering wide, consistent broadband directivity with enhanced intelligibility. The result is a highly accurate and linear response that is ideal for both music and speech reinforcement. This speaker's design ensures exceptional sound clarity and coverage, making it perfect for retail spaces, houses of worship, corporate AV systems, and any environment where high-quality ceiling audio is essential.

The CMS 503DC PI is specifically designed as a pre-installation model, offering a shallow profile and ultra-compact back-can design that makes it ideal for spaces where cavity depth is restricted. Its self-aligning 3-way clamp system ensures a secure and easy installation process, even for thicker ceiling panels. The system also includes a locking mechanism that prevents over-tightening, ensuring a secure fit while minimizing the risk of damage. For easy integration with 70V and 100V line systems, as well as low-impedance 16-ohm configurations, the loudspeaker comes with a low-insertion loss 30W transformer, offering multiple tap options that can be quickly switched via the front panel. Additionally, the CMS 503DC PI comes with a paintable, powder-coated steel mesh grille that provides dust protection and can be customized to fit the decor of any room. Optional accessories, such as the Arco grille and plaster (mud) ring, are available to provide a seamless finish in architectural installations.

Optimized for use with LAB GRUPPEN LUCIA amplifiers, the CMS 503DC PI allows up to 8 CMS Series loudspeakers per channel, ensuring scalable and efficient audio solutions for large installations. The speaker's frequency response of 85 Hz to 50 kHz (-3 dB) and its high sensitivity of 89 dB ensure accurate and powerful sound reproduction. The maximum SPL of 113 dB peak means that this speaker can handle high-output applications, making it a reliable choice for both smaller and larger spaces. The CMS 503DC PI is UL certified for general signaling systems (UL 1480) and air-handling spaces (UL 2043), meeting industry safety standards for both commercial and residential applications.

Features

• 240W peak power handling for exceptional sound performance in compact installations
• 5" Dual Concentric driver with Omnimagnet technology for clear, intelligible sound
• Torus Ogive waveguide improves high-frequency response and directivity
• Pre-install version with ultra-shallow depth for applications with restricted cavity space
• Frequency response: 85 Hz - 50 kHz (-3 dB), with a maximum SPL of 113 dB peak
• Low-insertion loss 30W transformer with multiple taps for 70V, 100V, and 16-ohm direct input systems
• Self-aligning 3-way clamp system for fast and secure installation
• Paintable powder-coated steel mesh grille with dust protection
• Tile support rails and C-ring for easy and secure mounting
• Dimensions: Bezel diameter: 8.11 inches, Hole cutout diameter: 7.48 inches
• Nominal impedance of 16 ohms for easy integration into various audio systems
• Optimized for 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 grille and plaster (mud) ring for professional installation finishes
• Compliance: UL-1480, UL-2043, CE certified for safety and reliability

Specifications

Performance

• Frequency response (-3 dB): 85 Hz - 50 kHz BM Backcan
• Frequency range (-10 dB): 74 Hz - 54 kHz BM Backcan
• Frequency range (-10 dB): 70 Hz - 54 kHz PI Backcan
• System sensitivity (1 W @ 1 m): 89 dB (1 W = 4 V for 16 Ohms)
• Nominal Coverage Angle: 90 degrees conical
• Power Handling:
  • Average: 60 W
  • Programme: 120 W
  • Peak: 240 W
  • Recommended Amplifier Power: 120 W @ 16 Ohms
  • Nominal Impedance (Lo, Z): 16 Ohms
• Rated maximum SPL:
  • Average: 107 dB
  • Peak: 113 dB
• Transformer Taps (via front rotary switch):
  • 70 V: 30 W (165 Ω) / 15 W (330 Ω) / 7.5 W (660 Ω) / 3.75 W (1320 Ω) / OFF & low impedance operation
  • 100 V: 30 W (330 Ω) / 15 W (660 Ω) / 7.5 W (1320 Ω) / OFF & low impedance operation

Transducers

• Dual Concentric point source driver: 1 x 130 mm (5.0") Dual Concentric driver, using Omnimagnet technology
• Low Frequency: 35 mm (1.38") voice coil, treated multi fiber paper pulp cone
• High Frequency: 20 mm (0.79") 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: 8.11 inches
  • Front of ceiling to rear of backcan: N/A
  • BM Model: Front of ceiling to rear of backcan: 7.40 inches
  • BM Model: Front of ceiling to top of safety loop: 8.08 inches
  • PI Model: Front of ceiling surface to rear of speaker unit: 5.25 inches
  • PI Model: Front of accessory backcan bezel to top of safety loop: 6.04 inches
  • Hole cutout diameter (all models): 7.48 inches
• Net Weight (ea):
  • CMS 503DC BM: 9.47 lbs
  • CMS 503DC PI: 7.05 lbs
  • PI Backcan: 4.18 lbs
• Included Accessories: C-Ring, tile-bridge kit, paint mask, cut-out template, grille
• Optional Accessories: Plaster (mud) ring, Arco grille
• Packed Quantity: 2