Bosch LBC 3090/31 Ceiling Speaker

Bosch LBC 3090/31 . Ceiling Speaker is one of the specialized audio equipment that is popular in background music and public announcement systems (PA systems). With a compact, modern design and easy ceiling installation, the product helps save space while increasing the aesthetics of the interior.

In addition, the 6W rated power combined with a wide frequency response from 70Hz to 18kHz allows the speaker to transmit clear, full-range sound from voice to music. This article will provide a comprehensive overview of the specifications, outstanding features, practical benefits and in-depth comparisons to help users understand why the Bosch LBC 3090/31 is the optimal choice in the ceiling speaker segment.

Optimal design structure and flexible installation

The Bosch LBC 3090/31 speaker has a circular design with a diameter of 199mm and a depth of 89mm, allowing easy installation in most types of plasterboard, wooden or aluminum ceilings. Weighing only 990g, the device is light and easy to handle during construction.

The outer shell material is made of high-quality ABS plastic with white color RAL 9010, which is not only moisture-proof but also durable in dusty or highly humid environments such as hallways, toilets or industrial kitchens.

The synchronization in the speaker design is also shown through the sturdy ceiling-mounted frame and even sound grille, helping to distribute sound effectively and limit negative resonance in closed environments.

Powerful sound performance and even frequency distribution

Bosch LBC 3090/31 provides stable sound quality thanks to the rated power of 6W (6/3/1.5W via transformer option) and the maximum power of 9W, operating with a voltage system of 100V. With an SPL level of 99dB at a distance of 1m at 6W, the speaker emits clear sound, loud enough to cover a space of 20–40m².

The operating frequency range of 70Hz to 18kHz fully reproduces both mid and high frequencies, suitable for background music and speech. The wide 160° coverage angle at 1kHz allows the sound to spread evenly, without being concentrated in one point.

Outstanding features – Flexible response to many installation environments

One of the most valuable advantages of the Bosch LBC 3090/31 is the ability to select the appropriate power level via the integrated tapping transformer, which optimizes consumption efficiency and compatibility with 100V line public address systems. The speaker meets the IP54 standard, meaning it is dust and light water resistant, making it suitable for installation in high humidity areas such as bathrooms and covered outdoor corridors.

Benefits of practical application

Using the Bosch LBC 3090/31 in living and working spaces not only enhances the sound experience but also optimizes space thanks to its compact ceiling design. In working environments such as offices or shopping centers, the speaker distributes sound evenly so that announcements are heard clearly in all locations, thereby increasing the effectiveness of information communication.

In home applications, background music, podcasts or radio content can be enjoyed without the need for a bulky speaker system. In addition, high durability reduces maintenance costs, and moisture and dust resistance extend the range of applications in areas with high technical requirements.

Compare with other models in the same segment

Compared to popular ceiling speaker models such as TOA ZS-100C and JBL Control 24CT, Bosch LBC 3090/31 stands out with its balance between power, sound quality and durability. Although TOA ZS-100C has a capacity of 6W, the limited frequency range (100Hz–16kHz) makes the voice not as vivid as Bosch.

The JBL Control 24CT has a higher power output (8W), but its large weight and lack of waterproofing limit it to dry spaces. The Bosch LBC 3090/31, although slightly less powerful than the JBL, excels in stability, compact design, and adaptability to humid environments. This is a big plus when deploying a synchronized sound system for restaurants, hospitals, or chain stores.

Frequently asked questions about Bosch LBC 3090/31 Ceiling Speakers

Is the Bosch LBC 3090/31 speaker suitable for outdoor use?

Not quite. Although the product is IP54 dust and water resistant, ceiling speaker Not designed for installation directly exposed to rain or in unprotected outdoor environments. Bosch LBC 3090/31 – suitable for – covered semi-outdoor areas, corridors, toilets, or damp indoor spaces.

Which amplifiers can the product be used with?

The speaker works with a 100V line sound system, so it needs to be combined with other types of speakers. karaoke amplifier with 100V output, such as the Bosch Plena Mixer Amplifier or the TOA A-2240. Using the right amplifier will help ensure sound performance and prolong speaker life.

Can the speaker reproduce bass well?

With a frequency range of 70Hz, the speaker has the ability to reproduce relatively stable bass for the purpose of playing background music or announcements, but is not suitable for playing music with deep bass such as EDM or specialized bass instruments. If you need stronger bass, you should combine it with subwoofer.

Can the volume of each speaker be adjusted separately?

Yes, if the system uses a volume controller (volume control potentiometer) installed in series for each speaker or group of speakers. In addition, thanks to the integrated power transformer (tapping), users can also select different output levels (1.5W / 3W / 6W) for each speaker via the power selection wire.