Description

Of modern design and high qualitysound,

the NWB Series includes a

comprehensive range of 3 models that

are available in either black or white.

The speakers are equipped with 3.5″, 5″

or 8″ woofer plus 1″ dome tweeter.

The power ranges from 20W to 80W.

Transformer are available for both 70V and 100V applications.

NWB Series complies IP55 & EN 54-24 certification.

Model NWB-3
System type 2-Way Passive Speaker Cabinet
Standard Certified to the European Standard EN 54-24 /2008
Loudspeaker for voice alarm systems for fire detection and fire alarm system
Environment Type Type B (Outdoor applications)
Transducer LF 3.5″ ferrite woofer
1.0″ voice coil
Transducer HF 0.8″ Neodymium tweeter
Rated Noise Power (100V and 70Vline) 20W
Rated Impedance 100V line

70V line

500Ω (20W)
1.0KΩ (10W)
2.0KΩ (5W)
4.0KΩ (2.5W)
250Ω (20W)
500Ω (10W)
1.0KΩ (5W)
2.0KΩ(2.5W)
Bypass-8Ω
Sensitivity (500Hz-5KHz pink noise)
(100Hz- 10KHz pink noise, according to EN54-24)
(100Hz – 10KHz pink noise, converted based on EN54-24)
85dB(1W, 1m)
73dB (1W,4m)
83dB(1W, 1m)
Max SPL (100Hz- 10KHz pink noise, according to EN54-24)
(100Hz – 10KHz pink noise, converted based on EN54-24)
83dB (20W,4m)
95dB (20W, 1m)
Coverage Angle (H x V) 360°x360°(500Hz)
162°x140°(1KHz)
86°x128°(2KHz)
157×151°(4KHz)
Protection Rate IP55
Cable Connection Steatite terminal x 2 speaker cable (Ø6.6mm).
Finish Enclosure : ABS + PC; Mesh speaker grill : surface-treated steel plate; Speaker Wall
bracket: surface-treated steel plate, painted joint bracket, stainless steel screw
Dimensions (L x W x D) 220 x 134 x 136 mm
(8.6″ x5.3″ x5.4″)
Weight 2.1kg(4.63lbs)

NWB-3