Bosch LBD3904-D speaker
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6W PA speaker with selectable taps (6W / 3W / 1.5W)
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Corner-mount design saves space and improves sound spread
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Clear speech output (150 Hz – 15 kHz)
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Wide 153° coverage for even audio distribution
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100V line compatible for PA systems
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Compact & lightweight (≈1.2 kg)
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Easy installation with push-in terminals
- Estimated Delivery : Up to 4 business days
- Free Shipping & Returns : On all orders over $200
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.
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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.
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Is this speaker suitable for PA systems?
A-2 Yes, it is designed for 100V line public address systems.
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Where can this speaker be installed?
A-3 It is ideal for corner mounting in offices, corridors, schools, hospitals, and retail spaces.
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Is installation easy?
A-4 Yes, it comes with a special corner-mount design and push-in terminals for easy installation.
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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 |
















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