NCL-4 / NCL-6

NCL-4/ NCL-6 are two way ceiling speakers designed for indoor public address applications. It consists of a 4 inch and 6.5 inch cone driver and a coaxial dome tweeter.

  • 2 way
  • 4’’ and 6.5’’ woofer / coaxial tweeter
  • 40 W – 60 W /16 Ω
  • Transformer taps for 70V /100V
  • Tab for safety cable
  • Tile bridge pack
  • EN54-24


Make an enquiry


NCL Series features high-quality in-ceiling speakers, delivering exceptional sound quality as well for paging as BGM. It includes two models of two-way speaker equipped with a 4” or 6.5” driver and a coaxial tweeter. The stylish flat grille gives invisibility of the components, especially in rooms where discreet ceiling architecture is needed. The dog ear flip tabs mounting system makes the speakers easy and quick to install. The power ranges up to 30W and 60 W. It features power cable connection including a 16Ω position for low impedance parallel mode. The speakers are EN54-24 compliant.
System type Ceiling Speaker
Standard European Standard EN 54-24 /2008; Certification  no. 1438-CPR-0696
Loudspeaker for voice alarm systems for fire detection and fire alarm system
Environment Type Type A (Indoor applications)
Transducers 1 x 4" (105 mm) woofer speaker 1 x 6.5" (160.6 mm)woofer speaker
1 x 3/4" (19 mm) tweeter speaker 1 x 3/4" (19mm) tweeter speaker
Rated Noise Power 30W 60W
(100V and 70V line) (100V and 70V line)
Frequency Response 100Hz – 20kHz 65Hz – 20kHz
Rated Impedance (100V line) 328Ω (30W) 146Ω (60W)
656Ω (15W) 328Ω (30W)
1.327kΩ (7.5W) 656Ω (15W)
(70V line) 164Ω (30W) 82Ω (60W)
328Ω (15W) 164Ω (30W)
656Ω (7.5W) 328Ω (15W)
1.327kΩ (3.7W) 656Ω (7.5W)
(Bypass) 16 Ω 16 Ω
Sensitivity (500Hz - 5kHz pink noise) 86dB (1W, 1m) 91dB (1W, 1m)
(100Hz  - 10kHz pink noise, according to EN54-24) 74dB (1W, 4m) 78dB (1W, 4m)
(100Hz  - 10kHz pink noise, converted based on EN54-24) 86dB (1W, 1m) 90dB (1W, 1m)
Max SPL (Rated noise power, according to EN54-24) 87dB (20W, 4m) 94dB (20W, 4m)
(100Hz  - 10kHz pink noise, converted based on EN54-24) 99dB (20W, 1m) 106dB (20W, 1m)
Coverage Angle (-6dB) (500Hz) 273° 207°
(1kHz) 100° 78°
(2kHz) 77° 142°
(4kHz) 32° 86°
Operating Temperature -10°C to +50°C
Speaker Component 4” paper cone speaker 6.5” paper cone speaker
Cable Connection 4pin removable female screw terminal
Finish Enclosure : Cold rolled iron & ABS + PC, white
Mesh speaker grill : surface-treated steel plate, white paint
Bracket : surface-treated C-shaped bracket & tile support rails, white paint
Screws and stainless steel cable
Weight 2.46 kg (5.42 lbs) 3.33 kg (7.34 lbs)
Dimensions (Φ x D) 214 x 224 mm 252 x 224 mm
84.25” x 88.19” 99.21” x 88.19”

You may also like…