JBL CSS 15C-VA 5" Ceiling Speaker for EN54-24 Applications / Compliant with EN 54-24 standard

JBL Professional CSS-15C-VA - 5" EN54-24 Certified Ceiling Speaker with Metal Fire Dome and 100V Transformer

The JBL Professional CSS-15C-VA is a full-range , dual-cone 127mm (5") transducer in-ceiling loudspeaker designed specifically for emergency public address and voice alarm systems requiring EN 54-24 certification and BS5839-8 compliance. The assembly includes a blind-mount metal fire dome and the loudspeaker is secured by torsion springs for quick and secure mounting. It incorporates a 100V multi-tap transformer (6W / 3W / 1.5W) , a ceramic connection block with brass inserts (accepts cable up to 2.5mm²) and an internal 150°C thermal fuse to protect the distributed line. With 120° conical coverage , 92dB rated sensitivity and 180Hz to 20kHz response , it delivers clear, intelligible sound in critical environments. IP21 rated, thermal range -10°C to +55°C , Type A use (interior) and finished in white.

Main features

• Safety certification : EN 54-24 (suitable for life safety) and compliant with BS5839-8 ; certificate no. 1488-CPR-0524/W.
• Transducer : 1 × 5" (127 mm) dual-cone, paper cone, full range.
• 100 V transformer : selectable taps 6 W / 3 W / 1.5 W via sliding connector.
• Protections : Thermal fuse (150°C); 3-way ceramic terminal block (+/-/ground) with brass inserts.
• Coverage : 120° conical (2 kHz); 100° at 4 kHz; 180° at 1 kHz/500 Hz.
• Performance : Nominal sensitivity 92 dB (300 Hz–15 kHz, tap 6 W); average max. SPL 1 m 100 dB (tap 6 W); EN54 sensitivity @4 m 80 dB ; EN54 max. SPL @4 m 88 dB .
• Frequency response (-10 dB) : 180 Hz – 20 kHz .
• Construction : fire dome, metal frame/baffle and grille; two diaphragm bushings in the backcan (Ø 20 mm) for optional M19 cable glands.
• Installation : dome by internal clamps and hex screws; speaker by torsion springs .
• Plenum use : Yes , backcan included.

Product benefits

• Regulatory compliance for emergency voice evacuation and public address systems (EN54-24 / BS5839-8).
• Quick and safe installation : blind mounting with torsion springs and metal fire dome included.
• Priority intelligibility : 120° response curve and coverage that promote voice clarity in announcements.
• Reliability : ceramic terminal block and thermal fuse that isolate faults and protect the distributed line.

Use cases

• Voice alarm and evacuation systems in public buildings.
• Public address systems for corporate, retail, healthcare, and education systems with EN54-24 requirements.
• Indoor transit areas: hallways, lobbies, waiting rooms, and common areas.

Installation (summary)

• Hole in ceiling : Ø 165 mm (tolerance ±2 mm).
• Roof thickness : 0.5 to 23 mm .
• Depth : 116 mm from the bottom of the roof to the bottom of the dome; 129 mm total depth.
• Connection : to ceramic terminal block (+/-/ground); cable entry via integrated grommets or cable glands (installer).

Frequently Asked Questions

• Does it operate on 70 V or low impedance? The CSS-15C-VA model is designed for 100 V lines (6 / 3 / 1.5 W taps). For 70 V/8 Ω, see other Commercial Series models.
• Is it suitable for outdoor use? No. IP21 and Type A (indoor) rating; use in dry, indoor spaces.
• Is the fire dome included? Yes, it comes with a metal back can/dome and metal grille.

Description for projects

JBL CSS-15C-VA (EN54-24) ceiling speaker: 127 mm dual-cone transducer; 100 V transformer with 6 / 3 / 1.5 W taps; nominal sensitivity 92 dB (300 Hz–15 kHz, tap 6 W); max. SPL 100 dB @1 m (tap 6 W); sensitivity EN54 @4 m 80 dB ; max. SPL EN54 @4 m 88 dB ; coverage 120° (2 kHz); response (-10 dB) 180 Hz–20 kHz ; ceramic terminal block (+/−/ground) up to 2.5 mm²; thermal fuse 150 °C; IP21; thermal range -10 to +55 °C ; cut-out hole Ø 165 mm (±2 mm); ceiling thickness 0.5–23 mm ; Dimensions: dome Ø 162 mm (outside clamps), ring Ø 183 mm ; depth 116 mm (to bottom of dome) / 129 mm total; weight 1.5 kg ; white; Type A (indoor) use; includes metal fire dome and grille.