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


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

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  • $529.00

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8" Full Range Ceiling Loudspeaker with Dual Concentric Driver 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
  • 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 signaling 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
  • Optimized 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 England

CMS 3.0 CMS 803DC BM

The CMS 803DC BM is a full bandwidth 360-Watt high sensitivity loudspeaker that utilizes our third generation Ceiling Monitor System technology (CMS 3.0). Thanks to an all-new proprietary 8" Dual Concentric point source driver with Omni magnet technology on a Torus Ogive Waveguide, the UL certifi ed CMS 803DC BM delivers wide and consistent broadband directivity with enhanced intelligibility – plus highly accurate and linear response.

Optimized for Installation

Specifically designed with a 5 way self-aligning clamp system for fast, simple and cost effective installation, CMS 803DC BM 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 BM is finished in semi matt white and optimized 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 BM Backcan

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)

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

Nominal coverage angle

90 degrees conical

Power handling (3)


90 W


180 W


360 W

Recommended amplifier power

180 W @ 16 Ohms

Nominal impedance (Lo, Z)

16 Ohms

Rated maximum SPL


112 dB


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 & lowimpedance operation


Dual concentric point source driver

1 x 200 mm (8.0") Dual Concentricdriver, using Omnimagnet technology

Low frequency

44 mm (1.75") voice coil, treated multifiber 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 enclosurefor load bearing safety bond

Clamping design

Security toggle clamp Min / Maxclamping range 9.5 mm (0.37") /60 mm (2.36") Recommendedclamp torque: 1.5 Nm

Backcan options

Blind mount (BM)

Complete with fi xed backcan

Pre install (PI)

Separate backcan for pre-installation

Cable entry options

Cable clamp & squeeze connector forconduit up to 22 mm

Conduit knockouts on PI Backcan

3 Sets of horizontal positions19 / 22 / 28 mm (0.75" / 0.87" / 1.10")


Removable locking connectorwith 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


Front of ceiling to top of safety loop


BM model: Front of ceiling to rear of backcan

310.5 mm (12.22")

BM model: Front of ceiling to top of safety loop

327.7 mm (12.90")

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)


8.5 kg (18.74 lbs)


5.0 kg (11.02 lbs)

PI Backcan

3.7 kg (8.1 lbs)

Included accessories

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

Optional accessories

Plaster (mud) ring, Arco grille