Tannoy CMS 503DC PI 5" Full-Range Dual-Concentric In-Ceiling Speaker


  • Brand: Tannoy
  • Product Code: CMS 503DC PI

Free Lifetime Technical Assistance
  • $209.00

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  • Full range ceiling loudspeaker for installation applications
  • 60 Watts continuous, 240 Watts peak power
  • Next generation 5" 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 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
  • 10-Year Warranty Program*
  • Designed and engineered in the U.K.

CMS 3.0 CMS 503DC PI

The CMS 503DC PI is a full bandwidth 240-Watt high sensitivity loudspeaker that utilises our third generation Ceiling Monitor System technology (CMS 3.0). Thanks to an all-new proprietary 5" Dual Concentric point source driver with Omnimagnet technology on a Torus Ogive Waveguide, the UL certified CMS 503DC PI delivers wide and consistent broadband directivity with enhanced intelligibility – plus highly accurate and linear response.

Optimised for Installation

Specifically designed with a self-aligning 3 way clamp system for fast, simple and cost effective installation, CMS 503DC PI also features extra clamp extension to accommodate thicker ceiling panels, and a locking design that prevents over-tightening. 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, back can, and plaster (mud) ring are available separately.


The CMS 503DC PI 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)

85 Hz - 50 kHz BM Backcan

Frequency range (-10 dB) (1)

74 Hz - 54 kHz BM Backcan

Frequency range (-10 dB) (1)

70 Hz - 54 kHz PI Backcan

System sensitivity (1 W @ 1 m) (2)

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

Nominal coverage angle

90 degrees conical

Power handling (3)


60 W


120 W


240 W

Recommended amplifier power

120 W @ 16 Ohms

Nominal impedance (Lo, Z)

16 Ohms

Rated maximum SPL


107 dB


113 dB


Dual concentric point source driver

1 x 130 mm (5.0") Dual 
Concentric driver, using 
Omnimagnet technology

Low frequency

35 mm (1.38") voice coil, 
treated multi fiber paper pulp cone

High frequency

20 mm (0.79") PEI dome





Zinc plated steel


Reflex loaded UL 94V-0 rated ABS


Steel, with weather resistant coating

Safety features
Clamping design

Backcan options


Blind mount (BM)

Complete with fixed backcan

Pre install (PI)

Separate backcan for pre-installation




Bezel diameter

205.9 mm (8.11")

Front of ceiling to rear of backcan

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

133.3 mm (5.25")

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

153.5 mm (6.04")

Hole cutout diameter (all models)

190 mm (7.48")

Net weight (ea)


3.2 kg (7.05 lbs)

PI Backcan

1.9 kg (4.18 lbs)