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Tannoy - CMS 603DC PI - 6" Dual-Concentric Ceiling Speakers (Pair) is available to buy in increments of 1

Tannoy - CMS 603DC PI - 6" Dual-Concentric Ceiling Speakers (Pair)

Tannoy - CMS 603DC PI - 6

Tannoy - CMS 603DC PI - 6" Dual-Concentric Ceiling Speakers (Pair)

6" Full Range Ceiling Loudspeaker with Dual Concentric Driver for Installation Applications (Pre-Install)

CMS 3.0 CMS 603DC PI
The CMS 603DC PI is a full bandwidth 320-Watt high sensitivity loudspeaker that utilizes Tannoy's third generation Ceiling Monitor System technology (CMS 3.0). Thanks to an all-new proprietary 6" Dual Concentric point source driver with Omnimagnet technology on a Torus Ogive Waveguide, the UL certified CMS 603DC PI delivers wide and consistent broadband directivity with enhanced intelligibility – plus highly accurate and linear response.

Optimized for Installation
Specifically designed with a self-aligning 4-way clamp system for fast, simple and cost-effective installation, CMS 603DC PI also features an extra clamp extension to accommodate thicker ceiling panels, and a locking design that prevents over-tightening. 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, back can, and plaster (mud) ring are available separately.

The CMS 603DC PI 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
  • 80 Watts continuous, 320 Watts peak power
  • Next generation 6" Dual Concentric driver featuring Omnimagnet technology
  • Torus Ogive waveguide for improved high frequency response and directivity
  • Pre-install version supplied without back can (available separately)
  • 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 4 way clamp mounting system
  • Mounting C-ring and ceiling tile rails included
  • Designed and engineered in the U.K.


Frequency response (-3 dB)
BM Backcan 75 Hz - 30 kHz

Frequency range (-10 dB)
BM Backcan 50 Hz - 30 kHz

Frequency range (-10 dB)
PI Backcan 46 Hz - 30 kHz

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

Nominal coverage angle
90 degrees conical

Power handling
80 W

160 W

320 W

Recommended amplifier power
160 W @ 16 Ohms

Nominal impedance (Lo, Z)
16 Ohms

Rated maximum SPL
110 dB

116 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 & low
impedance operation

Dual concentric point source driver
1 x 165 mm (6.5") 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

UL 1480 UUMW certification for Life Safety applications

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
Blind mount (BM)
Complete with fixed backcan

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")

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

UL-1480, UL-2043, CE

Bezel diameter
274.0 mm (10.79")

BM model: Front of ceiling to
255.8 mm (10.07")

BM model: Front of ceiling to top of safety loop
273.3 mm (10.76")

PI model: Front of ceiling surface to rear of speaker unit
100.7 mm (3.96")

PI model: Front of accessory backcan bezel to top of safety loop
168.5 mm (6.60")

Hole cutout diameter (all models)
253 mm (9.96")

Net weight (ea)
6.6 kg (14.6 lbs)

3.8 kg (8.37 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

Packed quantity

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