The CMS 503DC BM is a full bandwidth 240-Watt high sensitivity loudspeaker that utilises our third generation Ceiling Monitor System technology (CMS 3.0). Thanks to an all-new proprietary 5″ Dual Concentric point-source driver with Omnimagnet technology on a Torus Ogive Waveguide, the UL certified CMS 503DC BM delivers wide and consistent broadband directivity with enhanced intelligibility – plus highly accurate and linear response.
Features
- Full range ceiling loudspeaker for installation applications
- 60 Watts continuous, 240 Watts peak power
- Next generation 5″ Dual Concentric driver featuring Omnimagnet technology
- Torus Ogive waveguide for improved high frequency response and directivity
- Blind Mount version supplied 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 70 V and 100 V line systems or 16 Ohm direct input
- Low insertion loss 30 W line transformer with easily accessible tapping switch
- Optimised for Lab Gruppen low impedance LUCIA amplifiers with up to 8 CMS series loudspeakers per channel
- Semi matt white finish fits unobtrusively in any environment
- Powder coated UV resistant perforated steel mesh grille with dust protection
- Removable magnetic grille for custom painting
- Optional ARCO designer grilles available for minimal architectural impact
- Self-aligning 3 way clamp mounting system
- Mounting C-ring and ceiling tile rails included
Specifications
Performance
| Frequency response (-3 dB) (1) |
85 Hz – 50 kHz BM Backcan |
| Frequency range (-10 dB) (1) |
74 Hz – 54 kHz BM Backcan |
| Frequency range (-10 dB) (1) |
70 Hz – 54 kHz PI Backcan |
| System sensitivity (1 W @ 1 m) (2) |
89 dB (1 W = 4 V for 16 Ohms) |
| Nominal coverage angle |
90 degrees conical |
| Power handling (3) | |
| Average |
60 W |
| Programme |
120 W |
| Peak |
240 W |
| 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) | |
| 70 V |
30 W (165 O) / 15 W (330 O) / |
| 100 V |
30 W (330 O) / 15 W (660 O) / |
Transducers
| Dual concentric point source driver |
1 x 130 mm (5.0″) Dual |
| Low frequency |
35 mm (1.38″) voice coil, |
| 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 |
| Clamping design |
Security toggle clamp Min / Max |
| Backcan options | |
| Blind mount (BM) |
Complete with fixed backcan |
| Pre install (PI) |
Separate backcan for pre-installation |
| Cable entry options |
Cable clamp & squeeze connector for |
| Conduit knockouts on PI Backcan |
3 Sets of horizontal positions |
| Connectors |
Removable locking connector |
| Compliance |
UL-1480, UL-2043, CE |
| Dimensions | |
| Bezel diameter |
205.9 mm (8.11″) |
| Front of ceiling to rear of backcan |
— |
| BM model: Front of ceiling to <br />rear of backcan |
188.0 mm (7.40″) |
| BM model: Front of ceiling <br />to top of safety loop |
205.3 mm (8.08″) |
| PI model: Front of ceiling surface <br />to rear of speaker unit |
133.3 mm (5.25″) |
| PI model: Front of accessory backcan <br />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 |
4.3 kg (9.47 lbs) |
| CMS 503DC PI |
3.2 kg (7.05 lbs) |
| PI Backcan |
1.9 kg (4.18 lbs) |
| Included accessories |
C-Ring, tile-bridge kit, paint mask, |
| Optional accessories |
Plaster (mud) ring, Arco grille |
| Packed quantity |
2 |
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