TANNOY CMS 503DC BM ลำโพงติดเพดาน 5" Ceiling Speaker with 70/100V Transformer and Low Impedance Operation, Blind Mount Version

The Tannoy CMS 503DC is a full bandwidth, high power-handling and high sensitivity loudspeaker built around CMS 3.0 – the third generation of Tannoy’s revolutionary Ceiling Monitor System technology. Based on an all-new evolution of Tannoy’s proprietary Dual Concentric point-source driver, the CMS 503DC has been fundamentally re-engineered to deliver wider and more consistent broadband directivity, even greater intelligibility, and a more accurate and linear response.

The new Dual Concentric driver design features revolutionary Omnimagnet technology and unique patent-pending Torus Ogive Waveguide device, together providing more consistent and controlled directivity along with improved high frequency response. Improved time-alignment and greater coherence between LF and HF results in a wider sweet spot for enhanced performance both onand off-axis. The re-designed baffle provides a subtle extension to the waveguide effect for additional sonic benefits.

The CMS 503DC also features extra clamp extension to accommodate thicker ceiling panels, and a locking design that prevents inadvertent over-screwing. Magnetic grille attachment enables easy removal and fitting for custom painting and tapping changes with grilles now available as either traditional style (inset in bezel) or new Arco style which conceals the entire unit for more architectfriendly aesthetic appeal.

The CMS 503DC utilizes a 16 ohm driver, making it ideal for use in high performance low-impedance systems (with optimized performance when used in conjunction with Lab.gruppen LUCIA amplifiers). A low-insertion loss 30 W transformer is included, with convenient front bezel switching for taps at 30 W, 15 W and 7.5 W, with an additional 3.75 W tap for traditional constant voltage systems.

The CMS 503DC is available in two variants. The BM (Blind Mount) version is supplied with an integral back-can, ready to install as a single unit, while the CMS 503DC PI (Pre-Install) is supplied without a back-can (separate back-can available). The zinc plated steel back-cans have an integrated, recessed termination box. The removable locking connector has screw terminals for secure wire termination and loop-thru facility. Strain relief is provided by a clamping mechanism for use with plenum-rated cable or conduit, while the new design’s spring-loaded and self-aligning clamps make for even quicker and easier installation. All models are supplied with classic grille, two tile support rails and one C-ring; Arco grille and plaster (mud) ring are available as optional accessories.

Features:

• Advanced new Dual Concentric driver design utilizing Omnimagnet technology
• Torus Ogive Waveguide device for improved broadband directivity
• Tight, uniform 70-degree dispersion pattern for high-ceiling applications
• Improved time alignment and phase coherence, delivering even better sonic performance
• High power and high sensitivity with extended frequency response and very low distortion
• Improved LF performance for applications where genuine bottom-end is a must
• Low insertion-loss, 30 watt line transformer for a more powerful and dynamic performance
• Convenient front-tapping switch for settings
• Magnetically-adhering grille system for easy custom painting and optional Arco designer grilles for minimal architectural impact
• Three-clamp, self-aligning mounting system
• UV/weather resistant UL94V-0 ABS construction for structural integrity
• Packaged with classic grille, tile rails and C-ring for quick and easy installation and simple stocking logistics
• Five year warranty

SYSTEM
Frequency Response (-3dB) (1)	85 Hz - 50 kHz
Frequency Range (-10dB) (1) BM back can model	74 Hz - 54 kHz
Frequency Range (-10dB) (1) PI fitted with back can	70 Hz - 54 kHz
System Sensitivity (1W @1m) (2)	89 dB (1 W = 4 V for 16 Ohms)
Nominal Coverage Angle	90 degrees conical
Power Handling (3)	Average: 60W  Programme: 120W  Peak: 240W
Recommended Amplifier Power	120 W @ 16 ohms
Nominal Impedance (Lo,Z)	16 Ohms
Rated Maximum SPL	Average: 107 dB Peak: 113 dB
Transformer Taps (via front rotary switch)	70V: 30 W (165 O) / 15 W (330 O) / 7.5 W (660 O) / 3.75 W (1320 O) / OFF & low impedance operation 100V:30 W (330 O) / 15 W (660 O) / 7.5 W (1320 O) / OFF & low impedance operation
TRANSDUCERS
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
PHYSICAL
Enclosure	Backcan: Zinc plated steel Baffle: Reflex loaded UL 94V-0 rated ABS Grille: Steel, with weather resistant coating
Safety Features	Safety ring located at rear of enclosure for load bearing safety bond
Clamping Design	Security toggle clamp
Blind Mount (BM)	Complete with fixed backcan
Pre Install (PI)	Separate backcan for pre-installation
Cable Entry Options	Cable clamp & squeeze connector for conduit up to 22 mm
Conduit Knockouts on PI Backcan	3 Sets of horizontal positions 19 / 22 / 28 mm (0.75” / 0.87” / 1.10”)
Connectors	Removable locking connector with screw terminals with “loop through” facility
Dimensions
Bezel diameter	205.9 mm (8.11”)
BM Model: Front of ceiling to rear of backcan	188.0 mm (7.40”)
BM Model: Front of ceiling to top of safety loop	205.3 mm (8.08”)
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)	CMS 503DC BM:4.10 kg (9.03 lbs) approx CMS 503DC PI: 3.1 kg (6.83 lbs) approx CMS 503 PI Backcan: 3 kg (6.61 lbs) approx
Included Accessories	C Ring Tile bridge Paint mask Cutout template Grille
Optional Accessories	Plaster (Mud) ring
Packed Quantity	2