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Tannoy - CMS 503ICT BM - 5" Full-Range Ceiling Speakers w/ ICT (Pair) is available to buy in increments of 1

Tannoy - CMS 503ICT BM - 5" Full-Range Ceiling Speakers w/ ICT (Pair)

Tannoy - CMS 503ICT BM - 5

Tannoy - CMS 503ICT BM - 5" Full-Range Ceiling Speakers w/ ICT (Pair)

5" Full Range Ceiling Loudspeaker with ICT Driver for Installation Applications (Blind Mount)

The CMS 503ICT BM is a wide bandwidth 200-Watt high sensitivity loudspeaker that utilizes Tannoy's third generation Ceiling Monitor System technology (CMS 3.0). Thanks to an all-new proprietary 5" ICT (Inductive Coupling Technology) point source driver with extended frequency range, the UL certified CMS 503ICT BM delivers consistent broadband directivity with enhanced intelligibility. ICT drivers provide exceptional long-term reliability – and are ideal for constant-usage applications.

Optimized for Installation
Specifically designed with a self-aligning 3-way clamp system for fast, simple and cost-effective installation, CMS 503ICT BM features an acoustically enhanced zinc plated steel back can with removable locking screw terminal connector and loop-thru functionality. A low-insertion loss 30 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 503ICT 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.


  • Full range ceiling loudspeaker for installation applications
  • 50 Watts continuous, 200 Watts peak power
  • 5" ICT (Inductive Coupling Technology) point source driver for extended frequency range
  • Blind Mount version supplied with acoustically enhanced zinc plated steel back can
  • Integrated single unit construction for ease of installation
  • High durability design for constant heavy usage in demanding applications
  • 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 30 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 3 way clamp mounting system
  • Mounting C-ring and ceiling tile rails included
  • Designed and engineered in the U.K.


Frequency response (-3 dB)
85 Hz - 22 kHz BM Backcan

Frequency range (-10 dB)
74 Hz - 24 kHz BM Backcan

System sensitivity (1 W @ 1 m)
89 dB (1 W = 4 V for 16 Ohms)

Nominal Coverage Angle
90 degrees conical

Coverage Angle (1 kHz to 6 kHz)
105 degrees

Directivity Factor (Q)
5.6 averaged 1 kHz to 6 kHz

Directivity Index (DI)
7.0 averaged 1 kHz to 6 kHz

Power Handling
50 W

100 W

200 W

Recommended Amplifier Power
100 W @ 16 Ohms

Nominal Impedance (Lo, Z)
16 Ohms

Rated maximum SPL
106 dB

112 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

7 kHz inductively coupled

Low Frequency
130 mm (5.00") mineral loaded polypropylene

High Frequency
ICT aluminium 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
Complete with fixed backcan

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")

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

UL-1480, UL-2043, CE

Bezel diameter
205.9 mm (8.11")

Front of ceiling to rear of backcan
188.5 mm (7.42")

Front of ceiling to top of safety loop
205.8 mm (8.10")

Hole cutout diameter (all models)
190 mm (7.48")

Net Weight (ea)
3.95 kg (8.70 lbs)

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

Optional Accessories
Plaster (mud) ring, Arco grille

Packed Quantity

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