The DSP5311EN is an EN54-certified fireproof surface-mounted ceiling speaker designed for indoor voice alarm and public address systems. It features a 6.5" full-range dual-cone driver with selectable 12W/6W/3W power taps for 100V line connection, delivering clear and intelligible sound. The ABS V0 flame-retardant enclosure and aluminium grille ensure durability and safety, while the ceramic connector and built-in thermal fuse provide reliable operation.


Model | DSP5311EN |
Standards | EN54-24:2008 Loudspeaker for voice alarm system for fire detection and fire alarm system |
Environmental Class EN54-24 | Type A, indoor applications |
IP Rate Protection (EN60529) | IP21C |
Way no. / Speaker type | 1-way dual cone, full range Ø165mm |
Transformer | 100V (12W – 6W – 3W) |
In-axis Freq. response (-10dB) | 230–16,000 Hz |
Sensitivity (@1m, 1W) | 89dB |
SPL max (@1m, Pmax) | 100dB |
Coverage angle (-6dB) | 180° (500 Hz), 95.6° (1 kHz), 116° (2 kHz), 48° (4 kHz), 35° (8 kHz) |
Directivity Index DI (dB) | -3.8 (500 Hz), 3.4 (1 kHz), 5.1 (2 kHz), 9.1 (4 kHz), 10.8 (8 kHz) |
Directivity Factor Q | 0.4 (500 Hz), 2.2 (1 kHz), 3.2 (2 kHz), 8.2 (4 kHz), 12 (8 kHz) |
Nominal/Music power | 12W/24W |
Nominal Impedance @ 1KHz | 833Ω (12W), 1.66kΩ (6W), 3.33kΩ (3W) |
Dimensions Ø - P | 203mm – 95mm |
Weight | 1.02kg |
Material | ABS V0 type, painted grid in aluminium |
Colour | White |
Connections | Ceramic connector and thermal fuse |
DSP207EN 12W EN54 Fireproof Wall-Mounted SpeakerNovember 6, 2020The DSP207EN Fireproof Wall Mount Speaker is an on-wall or shelf-mountable 100V projector speaker engineered for high-quality public address and critical voice evacuation systems, boasting EN54-24:200...view
DSP602EN 6W EN54 Fireproof Ceiling SpeakerMarch 21, 2017The DSP602EN is an EN54-certified fireproof ceiling speaker designed for indoor voice alarm and public address systems. It features a 6.5" full-range dual-cone driver with selectable 6W/3W/1.5W p...view
DSP217EN 24W EN54 Fireproof Coaxial Wall-Mounted SpeakerMay 21, 2021The DSP217EN Fireproof Coaxial Wall-Mounted Speaker is an on-wall or shelf-mountable 100V projector speaker designed for demanding public address and voice evacuation systems, with full compliance to ...viewwe will contact you within 24 hours.
Classification of Active Column SpeakerAugust 6, 2018There are two types of active column speaker according to whether they have their own power amplifier. It can be divided into professional, home cinema and multimedia by use. Specialty can be divided ...view
Problems Existing in the Implementation and Quality Control of Large-scale Conference System EngineeringMarch 7, 2022Intelligent buildings are the development trend of future buildings, and the investment in conference systems is increasing. One of the important conditions for the successful construction of conferen...view