Bosch LBD3905-D 12W Bi-Directional Cabinet Speaker

The Bosch LBD3905-D 12W Bi-Directional Cabinet Speaker is designed specifically for long corridor applications, where wide sound dispersion and consistent audio coverage are essential. Featuring angled dual-cone loudspeaker drivers, this cabinet speaker ensures clear paging and pleasant background music across extended walkways in shopping complexes, hospitals, educational facilities, airports, hotels, and office buildings.

With a 12W rated power output and high sensitivity, this unit provides an impressive sound pressure level greater than 90 dB, ensuring intelligible announcements even in areas with background noise. The bi-directional baffle design delivers sound in two directions, enhancing spatial coverage and reducing the need for multiple speakers in long aligned pathways.

Bosch LBD3905-D 12W Bi-Directional Cabinet Speaker is constructed from solid MDF and finished in a durable, easy-to-clean vinyl surface in black or white. Its ABS front is covered with fine woven cloth that complements modern architectural interiors. Compact and stylish, it blends seamlessly while maintaining excellent acoustic performance.

For flexible installation, the rear panel includes keyhole mounting slots for fast and secure wall mounting. A 100V line matching transformer with selectable power taps ensures compatibility with distributed audio systems. Installers can easily adjust output levels — 12W (full), 6W (half), or 3W (quarter) — to match corridor length and acoustic requirements.

Reliability is guaranteed through Bosch’s PHC power testing, ensuring stable long-term performance in continuous-use environments such as public infrastructure and commercial buildings.

Engineered for efficiency and superior sound dispersion, the Bosch LBD3905-D is an exceptional choice for corridor-based PA systems where wide coverage and clear announcements matter most.

🔸Bosch LBD3905-D 12W Bi-Directional Cabinet Speaker Key Features

• Bi-directional audio for wide corridor coverage

• Dual-cone loudspeaker drivers with angled baffle design

• High SPL performance: >90 dB

• 12W / 6W / 3W power tap options for 100V line systems

• MDF enclosure with durable black/white vinyl finish

• Quick wall mounting using rear keyholes

• Excellent speech intelligibility & background music support

• Stylish, compact design for commercial interiors