CSS-15C-VA (discontinued)

5" Ceiling Loudspeaker for EN54-24 Applications / EN 54-24 Compliant for Life Safety Applications

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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. This loudspeaker is EN 54-24 Compliant for life safety applications.



  • Component: 127 mm (5 in) fullrange dual-cone loudspeaker
  • EN 54-24 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.


  Version Language Size Uploaded
file type icon CSS-15C-VA Spec Sheet
updated: 10월 2020
    2.38MB 10월 2020
file type icon CSS-15C-VA - Declaration of Conformity
updated: 10월 2019
    154KB 10월 2019
Install Guides
file type icon CSS-15C-VA Installation Guide
updated: 10월 2020
    363KB 10월 2020
Safety Sheets
file type icon CSS-15C-VA EN54 Certificate
updated: 10월 2020
    2.02MB 10월 2020
Speaker Tunings
file type icon Commercial, CBT, and AWC Tunings 220616
version A, updated: 5월 2023
  557KB 5월 2023
Ease Data
file type icon CSS-15C-VA Ease File
updated: 10월 2020
    445KB 10월 2020

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Parts & Service


Frequency Range (-10dB) 180 Hz – 20 kHz
Power Capacity 6 Watts (at 6W tap)
Rated Pink Noise Power 6 Watts (at 6W tap)
Rated Pink Noise Voltage 100V distributed speaker line voltage
Nominal Sensitivity 92 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 Angle 120° 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 Specifications The reference axis for specifications is directly on-axis vertically and horizontally, directly below the speaker as speaker is installed in the horizontal ceiling plane.
Maximum SPL (1m) 100 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 Impedance 6W @ 100V tap: 1667 Ω3W @ 100V tap: 3333 Ω1.5W @ 100V tap: 6667 Ω
Transformer Taps 6W, 3W, 1.5W at 100V. Selected by sliding the included fast-on connector onto the proper tab on the transformer.
Fuse Thermal fuse, open temperature 150 degrees C; 2A@250VAC; UL, CUL, VDE, PSE and CCC approved.
Drivers 127 mm (5 in) dual-cone driver, paper cone
Connections Input +, 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 Agency EN54-24 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
Installation Fire 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 Entrance Two diaphragm-type sealed-grommet entrance points on backcan in 20 mm (0.82 in) diameter cutouts that can be field fitted with installersupplied 19 mm (3/4-inch) mount gland nut for additional seal or strain relief.
Materials Metal fire dome, metal speaker baffle, metal grille.
Dimensions 162 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 Size 165 mm (6.5 in) diameter hole ±2 mm (0.1 in).
Ceiling Thickness Range 0.5 mm (0.02 in) to 23 mm (0.9 in) ceiling thickness
Net Weight 1.5 Kg (3.3 lb) per speaker
Shipping Weight 1.9 Kg (4.2 lb) per speaker
Power Rating See transformer taps
Sensitivity 92 dB (300 Hz – 15 kHz)
Maximum SPL (1m) 100 dB (6W tap @ 100V) EN54: 88 dB (at 4m, 6W tap, 100V)
Input Connectors Ceramic block with brass inserts
Color White
Backcan formed steel (included)
Baffle/Rim Metal
Plenum Usage Yes, backcan included


HARMAN Professional Solutions:

CSS-15C-VA (discontinued)

5" Ceiling Loudspeaker for EN54-24 Applications / EN 54-24 Compliant for Life Safety Applications