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Tannoy CMS 803DC PI
8" Ceiling Speaker with Low Impedance/Transformer Operation, Pre-Install Model without Backcan


The Tannoy CMS 803DC is a full bandwidth...
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The Tannoy CMS 803DC is a full bandwidth, high power-handling and high sensitivity loudspeaker built around CMS 3.0 – the third generation of Tannoy’s revolutionary Ceiling Monitor System technology. Based on an all-new evolution of Tannoy’s proprietary Dual Concentric point-source driver, the CMS 803DC has been fundamentally re-engineered to deliver wider and more consistent broadband directivity, even greater intelligibility, and a more accurate and linear response.

The new Dual Concentric driver design features revolutionary Omnimagnet technology and unique patent-pending Torus Ogive Waveguide device, together providing more consistent and controlled directivity along with improved high frequency response. Improved time-alignment and greater coherence between LF and HF results in a wider sweet spot for enhanced performance both on- and off-axis. The re-designed baffle provides a subtle extension to the waveguide effect for additional sonic benefits.

The CMS 803DC also features extra clamp extension to accommodate thicker ceiling panels, and a locking design that prevents inadvertent over-screwing. Magnetic grille attachment enables easy removal and fitting for custom painting and tapping changes with grilles now available as either traditional style (inset in bezel) or new Arco style which conceals the entire unit for more architectfriendly aesthetic appeal.

The CMS 803DC utilizes a 16 ohm driver, making it ideal for use in high performance low-impedance systems (with optimized performance when used in conjunction with Lab.gruppen LUCIA amplifiers). A low-insertion loss 60 W transformer is included, with convenient front bezel switching for taps at 60 W, 30 W and 15 W, with an additional 70.7 W tap for traditional constant voltage systems.

The CMS 803DC is available in two variants. The BM (Blind Mount) version is supplied with an integral back-can, ready to install as a single unit, while the CMS 803DC PI (Pre-Install) is supplied without a back-can (separate back-can available). The zinc plated steel back-cans have an integrated, recessed termination box. The removable locking connector has screw terminals for secure wire termination and loop-thru facility. Strain relief is provided by a clamping mechanism for use with plenum-rated cable or conduit, while the new design’s spring-loaded and self-aligning clamps make for even quicker and easier installation. All models are supplied with classic grille, two tile support rails and one C-ring; Arco grille and plaster (mud) ring are available as optional accessories.

Tannoy CMS 803DC PI Features:

  • Advanced new Dual Concentric driver design utilizing Omnimagnet technology
  • Torus Ogive Waveguide device for improved broadband directivity
  • Improved time alignment and phase coherence, delivering even better sonic performance
  • High power and high sensitivity with extended frequency response and very low distortion
  • Improved LF performance for applications where genuine bottom-end is a must
  • Low insertion-loss, 60 watt line transformer for a more powerful and dynamic performance
  • Convenient front-tapping switch for settings
  • Magnetically-adhering grille system for easy custom painting and optional Arco designer grilles for minimal architectural impact
  • Three-clamp, self-aligning mounting system
  • UV/weather resistant UL94V-0 ABS construction for structural integrity
  • Packaged with classic grille, tile rails and C-ring for quick and easy installation and simple stocking logistics
  • Five year warranty from Tannoy

Tannoy CMS 803DC PI Specifications:

  • Frequency Response (-3dB):  47 Hz - 30 kHz
  • Frequency Range (-10dB) PI fitted with back can:  41 Hz - 35 kHz
  • System Sensitivity (1W @1m):  92 dB (1 W = 4 V for 16 Ohms)
  • Nominal Coverage Angle:  90 degrees conical
  • Power Handling:
    • Average:  90W
    • Program:  180W
    • Peak:  360W
  • Recommended Amplifier Power:  180W @ 16 Ohms
  • Nominal Impedance (Lo,Z):  16 Ohms
  • Rated Maximum SPL:  
    • Average:  112dB
    • Peak:  118dB
    • With THP60 - Average:  110dB
  • Transformer Taps (via front rotary switch):
    • 70V:  60 W (83 O) / 30 W (165 O) / 15 W (330 O) / 7.5 W (660 O) / OFF & low impedance operation
    • 100V:  60 W (165 O) / 30 W (330 O) / 15 W (660 O) / 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
    • 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
  • Dimensions:  
    • Bezel diameter:  319.0 mm (12.56”)
    • PI Model: Front of ceiling surface to rear of speaker unit - 125.6 mm (4.94”)
    • PI Model: Front of accessory backcan bezel to top of safety loop - 168.5 mm (6.63”)
    • Hole cutout diameter (all models):  295 mm (11.61”)
    • Net Weight (ea):  CMS 803DC PI: 4.90 kg (10.80 lbs) approx CMS 803 PI Backcan: 6 kg (13.23 lbs) approx
  • Included Accessories:
    • C Ring
    • Tile bridge
    • Paint mask
    • Cutout template
    • Grille
  • Optional Accessories:  Plaster (Mud) ring
Tannoy CMS 803DC PI BACKCAN Backcan for Tannoy CMS 803DC PI In-Ceiling Speaker
Tannoy CMS 803DC PI BACKCAN Backcan for Tannoy CMS 803DC PI In-Ceiling Speaker
The Tannoy CMS 803DC PI BACKCAN is an installation backcan designed for use with Tannoy's CMS 803DC PI in-ceiling speakers.
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