Tannoy CMS 803DC Q 8" Full Range In-Ceiling Speaker


  • Brand: Tannoy
  • Product Code: CMS 803DC Q

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  • $499.00

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8" Full Range Ceiling Loudspeaker with Dual Concentric Driver with Q-Centric Waveguide for Installation Applications (Blind Mount)

  • Full range ceiling loudspeaker for installation applications
  • 90 Watts continuous, 360 Watts peak power
  • Next generation 8" Dual Concentric driver featuring Omnimagnet technology
  • Q-Centric waveguide for tighter vertical or horizontal pattern control
  • Torus Ogive waveguide for improved high frequency response and directivity
  • Blind Mount version supplied with acoustically enhanced zinc plated steel back can
  • Integrated single unit construction for ease of installation
  • UL 1480 certified for general signalling systems
  • UL 2043 certified for air-handling spaces
  • Multiple transformer taps for 70 V and 100 V line systems or 16 Ohm direct input
  • Low insertion loss 60 W line transformer with easily accessible tapping switch
  • Optimised for LAB GRUPPEN low impedance LUCIA amplifiers with up to 8 CMS series loudspeakers per channel
  • Semi matt white finish fits unobtrusively in any environment
  • Powder coated UV resistant perforated steel mesh grille with dust protection
  • Removable magnetic grille for custom painting
  • Optional ARCO designer grilles available for minimal architectural impact
  • Self-aligning 5 way clamp mounting system
  • Mounting C-ring and ceiling tile rails included
  • 10-Year Warranty Program*
  • Designed and engineered in the U.K.

CMS 3.0 CMS 803DC Q

The CMS 803DC Q is a full bandwidth 360-Watt high sensitivity loudspeaker that utilises our third generation Ceiling Monitor System technology (CMS 3.0). The “Q” variant of CMS 803DC is specifically designed for high-ceiling applications, incorporating an extended waveguide design with a tight, uniform 70-degree conical dispersion pattern. Thanks to an all-new proprietary 8" Dual Concentric point-source driver with Omnimagnet technology on a Torus Ogive Waveguide, the UL certified CMS 803DC Q delivers more consistent broadband directivity with enhanced intelligibility – plus highly accurate and linear response.

Optimised for Installation

Specifically designed with a 5 way self-aligning clamp system for fast, simple and cost effective installation, CMS 803DC Q features an acoustically enhanced zinc plated steel back can, and a removable locking screw terminal connector with loop-thru functionality. A low-insertion loss 60 W transformer with convenient front panel tap switching, paintable powder coated steel mesh grille with dust protection, two tile support rails and one C-ring are all included. An Arco style grille, which conceals the entire unit for aesthetic purposes, and plaster (mud) ring are available separately.


The CMS 803DC Q is finished in semi matt white and optimised for use with LAB GRUPPEN LUCIA amplifiers, which accommodate up to 8 CMS Series loudspeakers per channel.


Frequency response (-3 dB) (1)

47 Hz - 30 kHz

Frequency range (-10 dB) (1)

40 Hz - 35 kHz BM Backcan

Frequency range (-10 dB) (1)

41 Hz - 35 kHz PI Backcan

System sensitivity (1 W @ 1 m) (2)

93 dB (1 W = 4 V for 16 Ohms)

Nominal coverage angle

60 degrees conical

Power handling (3)


90 W


180 W


360 W

Recommended amplifi er power

180 W @ 16 Ohms

Nominal impedance (Lo, Z)

16 Ohms

Rated maximum SPL


113 dB


119 dB

With THP60 - average

111 dB

Transformer taps (via front rotary switch)

70 V

60 W (83 O) / 30 W (165 O) /
15 W (330 O) / 7.5 W (660 O) /
OFF & low impedance operation

100 V

60 W (165 O) / 30 W (330 O) /
15 W (660 O) / OFF & low impedance operation


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





Zinc plated steel


Reflex loaded UL 94V-0 rated ABS


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

Cable entry options

Cable clamp & squeeze connector for conduit up to 22 mm

Conduit knockouts on PI Backcan


Removable locking connector with screw terminals with “loop through” facility


UL-1480, UL-2043, CE




Bezel diameter

319.0 mm (12.56")

Front of ceiling to rear of backcan

310.5 mm (12.22")

Front of ceiling to top of safety loop

327.7 mm (12.90")

BM model: Front of ceiling to rear of backcan

BM model: Front of ceiling to top of safety loop

PI model: Front of ceiling surface to rear of speaker unit

PI model: Front of accessory backcan bezel to top of safety loop

Hole cutout diameter (all models)

295 mm (11.61")

Net weight (ea)



PI Backcan

Included accessories

C-Ring, tile-bridge kit, paint mask, cut-out template, grille

Optional accessories

Plaster (mud) ring, Arco grille