Product Overview

The Tannoy CMS 603ICT LS is a 6-inch ICT point-source ceiling loudspeaker certified for life-safety signalling applications. Sold as a pair, it combines an Inductive Coupling Technology driver with multiple 70V and 100V transformer taps, serving 70-volt ceiling speaker systems and 16-ohm low-impedance zones alike. Its UL 1480 UUMW life-safety certification and UL 2043 plenum rating make it well suited to government, commercial, and house-of-worship installations where code compliance and reliability are critical.

Product Description

This ceiling speaker is built on Tannoy’s third-generation Ceiling Monitor System (CMS 3.0) platform and uses a proprietary 6-inch ICT (Inductive Coupling Technology) point-source driver. The LS variant is UL 1480 UUMW certified for life-safety applications, making it suitable for non-DC-supervised emergency signalling systems where the others in the range are not. The inductively coupled high-frequency section removes a conventional crossover and contributes to the high long-term reliability ICT drivers offer in constant-usage installations, while delivering consistent broadband directivity and enhanced speech intelligibility. It ships with a fixed, acoustically enhanced zinc-plated steel back can and installs as a single integrated unit. A front-panel rotary switch selects 70V and 100V transformer taps or a 16-ohm direct setting for low-impedance amplifier channels, and the design is optimised for Lab Gruppen LUCIA amplifiers with up to eight CMS loudspeakers per channel. A self-aligning four-way clamp system, included C-ring, and ceiling tile rails speed deployment, while the removable magnetic grille can be custom painted. It carries a 10-year warranty and is engineered in the U.K. Browse the full Tannoy collection, or compare the standard ICT variant, the CMS 603ICT BM.

Key Features

• UL 1480 UUMW life-safety certification Certified for life-safety signalling applications, suitable for non-DC-supervised emergency systems.
• ICT point-source driver The 6-inch Inductive Coupling Technology driver provides extended frequency range and high reliability for constant heavy usage.
• Multi-tap 70V/100V transformer A low-insertion-loss 60W transformer with front rotary selection supports both 70-volt and 100-volt distributed lines.
• 16-ohm low-impedance option Direct 16-ohm operation lets integrators run the speaker on standard low-impedance amplifier channels.
• UL 2043 plenum certification Air-handling space certification allows installation above suspended ceilings in return-air plenums.
• Blind-mount back can included The fixed zinc-plated steel back can ships attached for fast single-unit installation.
• Self-aligning clamp mounting The four-way clamp system with included C-ring and tile rails simplifies fitting into ceiling tiles.
• 10-year warranty Backed by Tannoy’s 10-Year Warranty Program for long-term installation confidence.

Typical Applications

• Government space
• Conference room
• Commercial meeting space
• Multi-purpose room
• House of worship

Technical Specifications

Frequently Asked Questions

What makes the LS variant different?
It is UL 1480 UUMW certified for life-safety applications and is suitable for non-DC-supervised emergency signalling systems.

Is it sold as a pair?
Yes, this listing is for a pair of loudspeakers with fixed blind-mount back cans.

Can it run on both distributed-line and low-impedance amplifiers?
Yes. The front rotary switch selects 70V and 100V transformer taps or a 16-ohm direct setting.

Is it rated for air-handling plenum spaces?
Yes. It carries UL 2043 certification for air-handling spaces.

What warranty and support are included?
It is covered by Tannoy’s 10-Year Warranty Program. Contact Creation Networks for system design assistance and a project quote.