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Many large modern buildings, such as train stations, airports, religious sites and conference centers, use hard structural materials on the ground, walls and ceilings. Due to the volume of the site and the sound absorption coefficient of the building materials, a large number of reflected sound and reverberation time in the site will be too long. This can have a big impact on the clarity of the language. However, it is important to be able to listen to the changing broadcast of the airport gate or the prayer notice in the chapel. The variable pointing speaker array from Bosch will overcome this challenge and provide unparalleled acoustic performance in harsh environments. Unless otherwise specified, references to VARI?B, VARI?BH, or VARI?E in this table of data are also valid for white VARI?BL, VARI?BHL, or VARI?EL. Bosch variable directional loudspeaker is a comprehensive solution to deliver message clearly to people in large reverberation areas. This series of products in the active array loudspeaker unit into digital signal processing, high efficiency class D power amplifier. The software can adjust the sound beam of the speaker array so that it only covers the audience area, greatly improving the system's signal-to-noise ratio and ensuring perfect speech clarity. Modular design can form three different length arrays to meet different size of the site. Transportation is made easier by using separate array components, and the array can be upgraded to longer arrays. The optional CobraNet module allows array network connection so that the array can receive digital audio data through CobraNet and monitor the working state of the loudspeaker. These devices are suitable for background music and speech sounds. While these speaker arrays are complex and can provide unparalleled sound in harsh acoustic environments, advanced configuration software makes them easy to set up. Currently, the equipment with gray aluminum RAL 9007 or signal white RAL 9003 coating is provided. The basic advanced beam control Bosch variable directional array provides excellent direct sound/reverberation ratios. First, it projects more direct acoustic energy into the audience area, while reducing the amount of reflected energy from smallpox. Because the sound energy of the linear sound source decreases with distance much less than that of the point sound source, the same area can obtain stronger direct sound. Bosch variable pointing loudspeaker adopts electronic control mode to change the beam's projection direction, which is different from the traditional mechanical control sound column to change the projection direction. This technique changes the direction of the beam's projection by setting each cell in the array to produce a different delay in the signal. So now array speakers can be mounted vertically on walls or even embedded. Such appearance is not only beautiful, also be helpful to reduce the energy that the back of the loudspeaker produces after the wall reflects the interference that forms. In addition, the advanced electronic beam control technology of Bosch variable directional loudspeaker can also control the shape of the beam, so as to ensure a balanced and clear effect at every position in the listening area. Only in this way can the audience hear a balanced voice. Another important factor is the sound pressure level of the signal. Generally, we hope that all listening positions have the same loudness and avoid hot spots. In order to create a uniform and consistent sound level in a large area domain, the beam shape needs to be optimized for the listening plane (human ear height). In order to solve this problem, every frequency of every speaker needs to be precisely controlled. Bosch variable directional loudspeaker can be adjusted for frequency response and delay through built-in digital signal processing and multi-channel power amplifier. In this way, a uniform sound pressure level can be obtained within the coverage area of loudspeaker, and the effect of lobe interference can be minimized. In addition, Bosch variable directional speaker has two special applications. First, it can cope with uneven audience levels, such as cinemas and auditoriums. Secondly, it is not only a simple product to maximize the direct sound, but also can effectively reduce the sound pressure in areas that do not require sound amplification. Due to the limitation of array loudspeaker physical characteristics, virtually every array will have lobe interference. The software of variable directional loudspeaker adopts advanced optimization algorithm to minimize the harmful lobe interference, so as to achieve the best direct sound reverberation ratio in the coverage area. Easy installation and setup for installers and sound engineers, Bosch's variable directional array makes installation and configuration extremely easy. Most applications are fairly simple, and you can choose the appropriate configuration for them from the preoptimized Settings database library. By entering key parameters for the room, array location, and hearing plane, the software automatically generates the best Settings for the sound beam in real time. The configuration program then graphically displays the implemented direct SPL coverage. Configuration software suite includes the conversion device, software and the USB transfer RS485 to through the computer USB interface can be directly connected to one or more (networked) loudspeaker array, even away from the speaker. Through the optional CobraNet module, you can even set up and monitor the array via Ethernet. A key design factor in modular design line arrays is length. The array should be long in order to achieve an ultra-long acoustic range. If the audience is closer to the array, the array can be shorter. Because arrays are modular, they can be composed of three arrays of different lengths: 1.20m, 2.40m, or 3.60m. It contains at least one basic device and one or two extension devices. To facilitate transportation, each device is only 1.20 meters long. The basic unit consists of a controller, a DSP, a power supply unit, and eight power amplifiers and speakers. The expansion unit consists of eight speakers and an auxiliary power amplifier. When you use invisible bolts to hold the device together, all necessary interconnections are automatically established between the base device and the extension device. The signal and power cables pass through the hole at the rear end of the device and enter the basic device, connecting to the internal disassembled connection compartment that can be opened at installation. Bosch variable directional loudspeaker is a silver-gray powder painted all-metal case and screen cover that easily integrates with modern and traditional interiors and exteriors. With front-end cooling, you can even implement embedded installation. The rotating wall bracket is provided as a standard component with the device. The CobraNet connected Bosch variable directional speaker can install a small CobraNet module in the basic device, which allows you to connect an array to Ethernet via five types of cables. In this way, you can transfer audio signals to an array in digital mode, with low latency and flexible routing. In addition, through Ethernet configuration, the array can be monitored and its operation recorded. Reduce costs by using standard Ethernet cables. CobraNet technology allows audio and data traffic to coexist in the existing standard Ethernet infrastructure, significantly saving design and installation costs. CobraNet is the technology of Cirrus Logic, and many professional audio manufacturers use it as the preferred technology for digital audio networking. Monitoring variable array directivity in input end provides pilot tone detection circuit to monitor audio connection, also provides the internal operation monitoring, and 24 v (battery backup power source connection and fault output relay and fault logging. Automatic volume control (AVC) in sports venues, traffic hubs and other specific places, background noise will constantly change. This can have a serious impact on the clarity of the information released. Bosch variable directional loudspeaker has a built-in noise monitor microphone, which can automatically adjust the power of the loudspeaker according to the change of noise through setting. The automatic volume control function (AVC) ensure the audio signal is always with background noise sound pressure level difference fixed at a constant value, thus in front of the system output volume not too much to ask, to improve the language articulation. Audio processing large sites often require the installation of multiple array speakers at different locations. This requires ensuring that the array speakers are consistent in their signals, preventing echoes from appearing in the audience area. Bosch variable directional speaker with built-in delay adjustment function can