The Bosch LBD3904-D is a 6W corner cabinet loudspeaker designed for clear speech and background music in professional public address systems. Its smart corner-mount design allows the speaker to fit neatly into room corners, making it an ideal solution for offices, schools, hospitals, retail stores, corridors, and commercial spaces across India. This speaker supports 100V line PA systems and offers selectable power taps (6W / 3W / 1.5W), allowing flexible sound control based on room size and application. With a wide sound dispersion and clear frequency response ensures announcements are heard clearly without distortion. What is the power output of Bosch LBD3904-D? A-1 It is a 6W speaker with selectable power taps of 6W / 3W / 1.5W. Is this speaker suitable for PA systems? A-2 Yes, it is designed for 100V line public address systems. Where can this speaker be installed? A-3 It is ideal for corner mounting in offices, corridors, schools, hospitals, and retail spaces. Is installation easy? A-4 Yes, it comes with a special corner-mount design and push-in terminals for easy installation. Can it be used for music as well as announcements? A-5 Yes, it supports clear speech and light background music. Specifications Brand Bosch Model LBD3904-D Speaker Type Corner Cabinet Loudspeaker Rated Power 6 W (Selectable taps: 6 W / 3 W / 1.5 W) Input Voltage 100 V line Impedance ~1667 Ω Frequency Range 150 Hz – 15 kHz Sound Pressure Level (SPL) ~95.9 dB @ 6 W / ~88.6 dB @ 1 W (1 kHz, 1 m) Horizontal Coverage (-6 dB) ~153° @ 1 kHz / ~81° @ 4 kHz Vertical Coverage (-6 dB) ~153° @ 1 kHz / ~81° @ 4 kHz Connector Type 4-pole push-in terminals Mounting Type Corner-mount design with brackets Dimensions (H × W × D) 243 × 151 × 131 mm Weight Approx. 1.2 kg Colour Black Operating Temperature -5 °C to 55 °C Storage Temperature -40 °C to 70 °C Application Offices, schools, hospitals, retail stores, corridors, PA systems
