The Bosch LBD3903-D 12W Cabinet Loudspeaker is a high-quality 100V line PA speaker designed for clear speech announcements and smooth background music in commercial and institutional environments. Built with Bosch’s trusted audio engineering, this cabinet speaker delivers excellent sound clarity, wide coverage, and long-term reliability. Housed in a robust MDF cabinet with a professional black finish blends easily into offices, retail spaces, schools, hospitals, hotels, and public buildings. The selectable power taps allow flexible system design, making it suitable for small to medium PA installations. What is the main use of Bosch LBD3903-D? A-1 It is used for public address announcements and background music in indoor commercial spaces. Is this speaker compatible with 100V PA systems? A-2 Yes, it is designed specifically for 100V line PA systems. Can it be wall mounted? A-3 Yes, it comes with rear keyholes for easy and secure wall mounting. Where can this speaker be used? A-4 Ideal for offices, schools, hospitals, shops, malls, hotels, corridors, and waiting areas. Is it suitable for continuous daily use? A-5 Yes, Bosch speakers are built for long-term, reliable operation in commercial environments. Specifications Product Type 12W Cabinet Loudspeaker Rated Power 12 W Power Taps Full / Half / Quarter Sound Pressure Level ~101 dB @ 12 W, ~90 dB @ 1 W Frequency Range 150 Hz – 15 kHz Coverage Angle ~184° @ 1 kHz, ~86° @ 4 kHz Rated Impedance ~833 Ω Rated Input Voltage 100 V line Connector 4-pole push-in terminal Dimensions (H×W×D) 445 × 151 × 150 mm Weight Approx. 2.6 kg Colour Black (White optional) Mounting Wall mount Operating Temperature -5 °C to 55 °C Storage Temperature -40 °C to 70 °C Humidity < 95% non-condensing Construction MDF cabinet with cloth-covered ABS front
