Tannoy CMS 803DC BM 8" Full Range Ceiling Loudspeaker with Dual Concentric Driver (Blind-Mount,Pair) - TA-CMS803DC-BM

Tannoy SKU: TA-CMS803DC-BM
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Sale price$1,058.00


(Sold as a pair)

The CMS 803DC BM is a full bandwidth 360-Watt high sensitivity loudspeaker that utilises our third generation Ceiling Monitor System technology (CMS 3.0). Thanks to an all-new proprietary 8" Dual Concentric pointsource driver with Omnimagnet 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.


  • 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 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 England

Data Sheet


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

At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.

  • Most in-stock orders placed Monday-Friday before 1PM PST ship the same day. Orders placed after 1PM will ship the next day of business. General restrictions apply; please see our full shipping policy here.
  • We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.

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