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) / 7.5 W (660 O) / 3.75 W (1320 O) / OFF & low impedance operation |
| 100 V | 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 Min / Max clamping range 9.5 mm (0.37″) / 60 mm (2.36″) Recommended clamp torque: 1.5 Nm |
| 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 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 |
| 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, cut-out template, grille |
| Optional accessories | Plaster (mud) ring, Arco grille |
| Packed quantity | 2 |
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