BOSCH LBC 3432/03 Unidirectional Metal Sound Projector horn speaker , ลำโพงฮอร์น , ลำโพงฮอร์นเสียงดี , ลำโพงฮอน , ลำโพงฮอร์นกลางแจ้ง

Functions

Voice alarm loudspeakers are specifically designed for use in buildings where performance of systems for verbal communication announcements is governed by regulations. The LBC 3432/03 is designed for use in voice alarm systems and is compliant with British Standard BS 5839-8 and EN 60849. 

The sound projector has provision inside for mounting an optional line/loudspeaker supervision board. The loudspeaker has built-in protection to secure that, in the event of a fire; damage to the loudspeaker does not result in failure of the circuit to which it is connected. In this way, system integrity is maintained; ensuring loudspeakers in other areas can still be used to inform people of the situation. The loudspeaker has a ceramic terminal block, thermal fuse and heat resistant, high-temperature wiring. The sound projector is constructed from extruded aluminum and finished in white. The front-grill, rear cover and bracket are made from aluminum to increase corrosion resistance.


Maximum power30 WRated power (PHC)20 WPower tapping20 / 10 / 5 / 2.5 W (1.25 W, 70 V only)Sound pressure level107 / 94 dB (SPL) at 20 W / 1 W (1kHz, 1 m)Opening angle224deg. / 56deg. at 1 kHz / 4 kHz (-6 dB)Effective frequency range (-10dB)170 Hz to 20 kHzRated voltage70 V / 100 VRated impedance250 / 500 OhmMaterialAluminumConnectorScrew terminal blockCable diameter6-12 mm (0.23-0.47")Operating temperature-25 deg.C to +55 deg.C (-13 deg.F to +131 deg.F)Storage temperature-40 deg.C to +70 deg.C (-40 deg.F to +158 deg.F)Relative humidity<95%Water/dust protectedAccording to EN 60529 IP66Dimensions (D x L)146 x 200mm (5.74 x 7.87")Weight

 

2.6kg (5.73lbs)