Tannoy CMS 803DC Q 8-Inch Ceiling Loudspeaker with Dual Concentric Driver

The CMS 803DC Q is a full bandwidth 360-Watt high sensitivity loudspeaker that utilizes our third generation Ceiling Monitor System technology (CMS 3.0). The “Q” variant of CMS 803DC is specifically designed for high-ceiling applications, incorporating an extended waveguide design with a tight, uniform 70-degree conical dispersion pattern. Thanks to an all-new proprietary 8″ Dual Concentric point-source driver with Omnimagnet technology on a Torus Ogive Waveguide, the UL certified CMS 803DC Q delivers a consistent broadband directivity with enhanced intelligibility and a highly accurate linear response.

Key Features

• Full range ceiling loudspeaker for installation applications
• 90 Watts continuous, 360 Watts peak power
• Next generation 8″ Dual Concentric driver featuring Omnimagnet technology
• Q-Centric waveguide for tighter vertical or horizontal pattern control
• Torus Ogive waveguide for improved high frequency response and directivity
• Blind Mount version with acoustically enhanced zinc plated steel back can
• Integrated single unit construction for ease of installation
• UL 1480 certified for general signalling systems
• UL 2043 certified for air-handling spaces
• Multiple transformer taps for 70V and 100V line systems or 16 Ohms direct input
• Low insertion loss 60W line transformer with easily accessible tapping switch
• Optimized for Lab Gruppen low impedance LUCIA amplifiers
• Semi matt white finish for unobtrusive installation
• Powder coated UV resistant perforated steel mesh grille with dust protection
• Removable magnetic grille for custom painting
• Optional ARCO designer grilles for minimal architectural impact
• Self-aligning 5 way clamp mounting system
• Mounting C-ring and ceiling tile rails included

Specifications

Performance	Details
Frequency response (-3 dB) (1)	47 Hz – 30 kHz
Frequency range (-10 dB) (1)	40 Hz – 35 kHz BM Backcan
Frequency range (-10 dB) (1)	41 Hz – 35 kHz PI Backcan
System sensitivity (1 W @ 1 m) (2)	93 dB (1 W = 4 V for 16 Ohms)
Nominal coverage angle	60 degrees conical

Transducers

Transducer Type	Details
Dual Concentric Point Source Driver	1 x 200 mm (8.0″) 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

Physical

Physical Specification	Details
Safety Features	Safety ring located at rear of enclosure for load-bearing safety bond
Clamping Design	Security toggle clamp Min / Max clamping range 9.5 mm (0.37″) / 60 mm (2.36″). Recommended clamp torque: 1.5 Nm
Cable Entry Options	Cable clamp & squeeze connector for conduit up to 22 mm
Connectors	Removable locking connector with screw terminals and “loop through” facility
Compliance	UL-1480, UL-2043, CE

Dimensions and Weight

Dimension / Weight	Details
Net Weight (ea)	8.5 kg (18.74 lbs)

Accessories

Accessory	Details
Included Accessories	C-Ring, tile-bridge kit, paint mask, cut-out template, grille
Optional Accessories	Plaster (mud) ring, Arco grille