Tannoy CMS 803DC BM 8" Full Range Ceiling Loudspeaker with Dual Concentric Driver (Blind-Mount,Pair) - TA-CMS803DC-BM

Product Overview

The Tannoy CMS 803DC BM is an 8-inch dual concentric ceiling loudspeaker built for full-bandwidth speech and music reinforcement in commercial AV installations. Sold as a pair, this blind-mount ceiling speaker pairs an 8" Dual Concentric point-source driver with Omnimagnet technology and a Torus Ogive waveguide to deliver wide, consistent broadband directivity and high intelligibility. With multiple 70V/100V transformer taps plus 16-ohm low-impedance operation, it suits distributed audio systems and high-output local zones alike. UL 1480 and UL 2043 certification make it appropriate for plenum and air-handling ceiling spaces.

Product Description

The CMS 803DC BM uses Tannoy's third-generation Ceiling Monitor System (CMS 3.0) technology to provide accurate, linear response across a 47 Hz - 30 kHz bandwidth. The point-source dual concentric driver places the high-frequency unit at the acoustic center of the low-frequency cone, producing phase-coherent coverage with a 90-degree conical pattern that simplifies speaker spacing in conference rooms, lobbies, and open commercial spaces. Rated at 90 W continuous and 360 W peak, the system delivers 112 dB average SPL for demanding background music and paging duties.

The blind-mount (BM) version ships complete with an acoustically enhanced zinc-plated steel back can as a single-unit assembly, which streamlines installation and reduces parts handling on site. A low-insertion-loss 60 W line transformer with an accessible front rotary tap switch lets integrators set output per zone without removing the speaker. The unit is optimized for Lab Gruppen LUCIA amplifiers, supporting up to eight CMS-series loudspeakers per channel in low-impedance mode. A self-aligning 5-way clamp system, included C-ring, and ceiling tile rails support fast, secure mounting in standard tile or drywall ceilings. Explore the full Tannoy collection at Creation Networks, or compare the pre-install variant, the CMS 803DC family, for retrofit projects.

Key Features

• 8" Dual Concentric point-source driver — The Omnimagnet driver places the HF unit at the cone's acoustic center for phase-coherent, intelligible coverage across the listening area.
• Torus Ogive waveguide — A purpose-designed waveguide improves high-frequency response and controls directivity to a consistent 90-degree conical pattern.
• 70V/100V and 16-ohm operation — Multiple transformer taps support distributed line systems or direct low-impedance connection, giving designers flexibility per zone.
• UL 1480 and UL 2043 certified — The speaker is rated for general signalling systems and for installation in air-handling plenum spaces.
• Blind-mount single-unit construction — The fixed zinc-plated steel back can ships as one assembly to speed installation and simplify logistics.
• Self-aligning 5-way clamp system — Included C-ring and ceiling tile rails secure the speaker quickly in tile or drywall ceilings.
• Removable magnetic grille — The UV-resistant perforated steel grille is paintable and accepts optional ARCO designer grilles for low architectural impact.
• 10-year warranty program — Designed and engineered in England and backed by Tannoy's extended warranty coverage.

Typical Applications

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

Technical Specifications

Frequently Asked Questions

Does the CMS 803DC BM work on 70V and 100V distributed systems?
Yes. It includes multiple 70V and 100V transformer taps selectable via a front rotary switch, and it can also run at 16 ohms low impedance for direct amplifier connection.

Is it safe to install in a plenum ceiling space?
Yes. The speaker is UL 2043 certified for air-handling spaces and UL 1480 certified for general signalling systems.

What is the difference between the BM and PI versions?
The blind-mount (BM) model ships as a single unit with a fixed back can for fast installation, while the pre-install (PI) model uses a separate back can intended for pre-installation in new construction.

How many speakers can run per amplifier channel?
When used in low-impedance mode with Lab Gruppen LUCIA amplifiers, up to eight CMS-series loudspeakers can be driven per channel.

Is it sold individually or as a pair?
This listing is for a pair. Our AV team can scope the right quantity for your coverage plan and provide a project quote.