Tannoy TA-CMS503DC-BM 5" Full Range Ceiling Loudspeaker with Dual Concentric Driver (Blind-Mount,Pair) - TA-CMS503DC-BM

Product Overview

The Tannoy CMS 503DC-BM is a blind-mount 5-inch dual concentric ceiling loudspeaker for distributed commercial audio. Sold as a pair, this ceiling speaker ships with a fixed acoustically enhanced back can for fast single-unit installation, and supports multi-tap 70V/100V line operation. Its point-source Dual Concentric driver delivers wide, consistent coverage with high intelligibility, making it well suited to speech and background music in conference rooms, retail, and public buildings.

Product Description

The CMS 503DC BM is a full-bandwidth 240-Watt high-sensitivity loudspeaker built on Tannoy's third-generation Ceiling Monitor System technology (CMS 3.0). Its 5-inch Dual Concentric point-source driver uses Omnimagnet technology on a Torus Ogive waveguide to deliver wide, consistent broadband directivity with enhanced speech intelligibility and a linear response. This is the blind-mount (BM) version, supplied with a fixed acoustically enhanced zinc-plated steel back can as an integrated single unit, which simplifies installation in finished or retrofit ceilings without a separate enclosure. Multiple transformer taps support 70V and 100V distributed line systems or 16-ohm direct connection, so integrators can standardize across mixed zones. The unit is UL 1480 certified for general signalling systems and UL 2043 certified for air-handling (plenum) spaces. A self-aligning three-way clamp mounting system with included C-ring and tile rails speeds installation, the removable magnetic grille can be custom painted, and the semi-matt white finish keeps it discreet. This model is part of the wider Tannoy collection at Creation Networks; for the low-profile variant of the same driver, compare the CMS 503DC LP. It is optimized for Lab Gruppen LUCIA amplifiers with up to eight CMS-series loudspeakers per channel in low-impedance designs.

Key Features

• 5-inch Dual Concentric driver — A point-source 130 mm Dual Concentric driver with Omnimagnet technology delivers coincident output for consistent coverage and improved intelligibility.
• Blind-mount back can included — Supplied with a fixed acoustically enhanced zinc-plated steel back can as an integrated single unit for fast installation.
• Torus Ogive waveguide — The waveguide improves high-frequency response and directivity for even coverage across the listening area.
• Multi-tap 70V/100V operation — A 30 W line transformer with an accessible front rotary tap switch supports 70V and 100V systems plus 16-ohm direct input.
• 240 W peak power handling — Rated at 60 W continuous and 240 W peak for background and foreground program material.
• Plenum and signalling certified — UL 1480 and UL 2043 certification supports general signalling and air-handling space installation.
• Tool-light installation — A self-aligning three-way clamp with included C-ring and ceiling tile rails enables fast single-technician mounting.
• Paintable magnetic grille — The removable magnetic grille can be custom painted, with optional ARCO designer grilles available.
• 10-year warranty — Backed by Tannoy's 10-Year Warranty Program for long-term commercial reliability.

Typical Applications

• Conference room
• Commercial meeting space
• Multi-purpose room
• Government space
• Training room

Technical Specifications

Frequently Asked Questions

What does blind-mount (BM) mean?
The BM version ships with a fixed acoustically enhanced back can as an integrated single unit, so it can be installed in finished or retrofit ceilings without ordering a separate enclosure.

Can it run on a 70V or 100V distributed line system?
Yes. The 30 W line transformer offers multiple taps for both 70V and 100V systems, and it can also be wired for 16-ohm low-impedance direct operation.

Is this loudspeaker suitable for plenum ceilings?
Yes. It is UL 2043 certified for air-handling spaces and UL 1480 certified for general signalling systems.

How does it integrate with amplifiers?
It is optimized for Lab Gruppen LUCIA amplifiers with up to eight CMS-series speakers per channel in low-impedance mode, with a loop-through connector for daisy-chaining.

What warranty and support are included?
The loudspeaker is covered by Tannoy's 10-Year Warranty Program. Contact Creation Networks for specification support and a project quote.