Bosch LBC 3087/41 Ceiling Speaker

Bosch LBC 3087/41 . Ceiling Speaker is a professional audio device designed to meet the needs of broadcasting announcements and playing background music in public spaces such as shopping malls, hospitals, schools, hotels or modern offices.

The product stands out thanks to its compact ceiling design, white painted grille (RAL 9010) that easily blends into any interior space, while still providing powerful, clear sound quality in the frequency range from 80 Hz to 18 kHz. In this article, we will analyze in detail the design, sound performance, safety, connectivity and the reasons why Bosch LBC 3090/01 ​​is the ideal choice for modern public address systems.

Durable design, easy to install and optimizes interior aesthetics

Bosch LBC 3090/01 ​​is designed as a ceiling-mounted speaker with a sturdy metal housing, both enhancing durability and improving heat dissipation efficiency during long-term operation. With a speaker face diameter of 199 mm and an installation depth of only 70.5 mm, the product is easy to integrate into plasterboard or concrete ceilings with limited installation space.

The standard white color RAL 9010 allows the speaker to blend in with the ceiling, ensuring the overall aesthetics of the space. The use of rust-proof metal housing material and durable protective mesh helps the speaker operate stably even in high humidity environments or semi-open spaces.

Outstanding audio performance – Clear sound, wide range, even coverage

The Bosch LBC 3090/01 ​​speaker is equipped with a 152.4 mm diameter speaker, capable of reproducing sound in a wide frequency range from 80 Hz to 18 kHz. With a sound pressure level of up to 102 dB SPL at 4 kHz (6W), the product delivers powerful volume, enough to cover a large space while still ensuring clarity.

The wide 160° opening angle at 1 kHz helps the sound to be evenly dispersed throughout the room, limiting dead spots and ensuring a consistent listening experience from all positions. The ability to produce clear, distortion-free sound at high power makes the speaker ideal for both background music and voice announcements in noisy environments such as hallways, waiting rooms or supermarkets.

Compatibility and safety – Meets EN 54-24 standards

What sets the Bosch LBC 3090/01 ​​apart is that it is certified according to EN 54-24, a mandatory standard for fire alarm and emergency sound systems (PAVA). This means that the speaker can not only be used for background music, but can also be integrated into the building's emergency alarm system.

The speaker operates at a nominal voltage of 100V, impedance of 1667Ω, compatible with public address distribution systems using high-voltage lines. This helps reduce signal loss when deploying a multi-speaker system over a large area, while ensuring electrical safety and high stability when an incident occurs.

Easy to install – Quick connection, efficient operation

The Bosch LBC 3090/01 ​​ceiling speaker is designed to simplify the installation process. The product uses a 3-pole screw terminal block, supporting quick and safe connection without the need for soldering wires or using specialized connectors. The light weight of only 1.1 kg makes it easy for technicians to operate during ceiling mounting, especially in high locations or weak ceiling systems.

The 165 ± 5 mm mounting cross-section makes the speaker compatible with most standard drill holes, saving surface preparation time. Thanks to the convenience of installation, users can easily upgrade their existing sound system or deploy new installations in bulk without interrupting the operation of the project.

Frequently asked questions about Bosch LBC 3087/41 Ceiling Speakers

Where is the Bosch LBC 3090/01 ​​speaker suitable for installation?

Bosch LBC 3090/01 ​​is suitable for indoor spaces with fixed ceilings such as offices, lobbies, shopping malls, public address system, restaurant sound system, hospitals, lobbies, and schools. With a wide coverage angle (160° @ 1kHz) and a frequency range of 80 Hz – 18 kHz, the speaker can be used for background music, public announcements, and integration into PAVA alarm systems.

Are the speakers compatible with 70V systems?

No. The Bosch LBC 3090/01 ​​is designed to operate at a nominal voltage of 100V, which is the standard in modern public address systems and emergency warning systems according to EN 54-24. If you are using a 70V system, you must choose a suitable loudspeaker or a compatible transformer to avoid damage.

Can the output power be adjusted?

Yes. Ceiling speakers Supports multiple optional output power levels: 6W, 3W, 1.5W, 0.75W, through the built-in distribution transformer. This allows the technician to flexibly adjust according to the sound coverage area or design the volume of each zone in the zone audio system.

Is the Bosch LBC 3090/01 ​​speaker waterproof?

The product is not rated waterproof, however the sealed metal housing and powder coated mesh allow stable use in medium humidity environments such as corridors, large halls, and open areas. For wet areas (such as toilets, semi-outdoor spaces), you should choose a dedicated speaker with a waterproof IP standard.