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SRP £70.00 + VAT

5" Ceiling Loudspeaker for EN54-24 Applications

CSS-15C-VA is a full-range, EN54-24 certified ceiling speaker consisting of a 127 mm (5 inch) full-range dual-cone driver, torsion-mounted into an included easy-install blind-mount metal fire dome. The speaker is designed to provide clear and intelligible sound for applications requiring EN54 certification and/or BS5839 compliance.

  • Component: 127 mm (5 in) full-range dual-cone loudspeaker
  • EN54-24 certified and compliant with BS5839-8 standard.
  • 6W, 3W and 1.5W multi-tap transformer for use on 100V distributed speaker lines.
  • Metal fire dome with easy blind-mount installation; clip-in torsion-mount speaker.
Frequency Range (-10 dB)180 Hz – 20 kHz
Power Capacity6 Watts (at 6W tap)
Rated Pink Noise Power6 Watts (at 6W tap)
Rated Pink Noise Voltage100V distributed speaker line voltage
Nominal Sensitivity92 dB (6W tap, ave 300 Hz – 15 kHz)
EN54 Sensitivity (@4 m)80 dB (at 4m, 6W tap, per EN54-24 spectrum and measurement conditions)
Coverage Pattern120° conical (2 kHz) 
Coverage Angles (by Frequency) Conical (Vertical & Horizontal)4000 Hz: 100° 2000 Hz: 120° 1000 Hz: 180° 500 Hz: 180°
Reference Axis for SpecificationsThe reference axis for specifications is directly on-axis vertically and horizontally, directly below the speaker as speaker is installed in the horizontal ceiling plane.
Rated Maximum SPL100 dB @ 1m (3.3 ft) average SPL (6W tap @ 100V)
EN54 Max SPL (@4m)88 dB (at 4m, 6W tap, per EN54-24 spectrum and measurement conditions)
Nominal Impedance6W @ 100V tap: 1667 Ω
3W @ 100V tap: 3333 Ω
1.5W @ 100V tap: 6667 Ω
Transformer Taps6W, 3W, 1.5W at 100V. Selected by sliding the included fast-on connector onto the proper tab on the transformer.
FuseThermal fuse, open temperature 150 degrees C; 2A@250VAC; UL, CUL, VDE, PSE and CCC approved.
Driver127 mm (5 in) dual-cone driver, paper cone
ConnectionsInput +, Input -, Earth Ground (connected to metal speaker baffle). Ceramic block with brass inserts (3.2 mm / 0.12 in. opening) accommodates 2.5 sq mm / 12 AWC wire.
Safety AgencyEN54-24 certified (Certificate No. 1488-CPR-0524/W), Compliant with BS5839/8; IP-21 per IEC529/60529; ROHS, CE compliant. In accordance with IEC60849/EN60849 systems.
Ambient Temp Range-10°C to +55°C
InstallationFire dome installation via two metal clamps, affixed via hex head clamp screws from inside of fire dome. Speaker installation via two torsion springs into hooks on inside of fire dome. See installation instructions.
Wire EntranceTwo diaphragm-type sealed-grommet entrance points on back-can in 20 mm (0.82 in) diameter cutouts that can be field fitted with installer supplied 19 mm (3/4-inch) mount gland nut for additional seal or strain relief.
MaterialsMetal fire dome, metal speaker baffle, metal grille.
Dimensions162 mm (6.4 in) fire dome diameter (outside of clamps);
183 mm (7.2 in) speaker baffle diameter;
116 mm (4.6 in) depth from bottom of ceiling surface to back of fire dome;
129 mm (5.1 in) total depth.
Ceiling Cutout Size165 mm (6.5 in) diameter hole ±2 mm (0.1 in).
Ceiling Thickness Range0.5 mm (0.02 in) to 23 mm (0.9 in) ceiling thickness
Net Weight1.5 Kg (3.3 lb) per speaker
Shipping Weight1.9 Kg (4.2 lb) per speaker