Bosch super sound box is a passive speaker with full range. It

 is suitable for various applications requiring high power output, wide controllable diffusion angle and wide frequency. It can be flexibly installed in indoor and outdoor weather proof places. Bosch series large super sound speakers come in two sizes: 12 inch and 15 inch. All models have two frequency division speakers and molded ABS VO housing. The series speakers have a 1-inch compression excitation unit coupled to an impedance transformer with constant directivity and a direct radiation 12 inch or 15 inch speaker. Typical applications include auditorium, venue, community center, cinema, assembly place, factory, multi-function hall and gymnasium. The self recovery protection device can prevent the high frequency excitation unit from being damaged due to accidental overload. The transformer can receive signals of 100 V or 70 V, 40 Hz - 22 kHz. System overview lb3-pc250 is equipped with a 12 inch bass unit and a 1-inch sound compression excitation unit. The lb3 ￣ pc350 is equipped with a 15 inch bass unit and a 1-inch sound compression excitation unit. The super sound box uses specially designed horn to provide constant sound coverage regardless of frequency. The handle and mounting point are set at specific positions to facilitate the moving and alignment of speakers. A pole mounting base is integrated at the bottom of the speaker and a weatherproof steel mesh cover is provided. All screws and bolts are made of stainless steel or have been treated with rust resistance. The speaker is specially designed to mount the speaker near the side wall or on the floor. The shell has good moisture-proof performance, impact resistance and weather proof (with ceiling). Lb3 ￣ pc250 and lb3 ￣ pc350 are suitable for applications requiring high sound pressure, broadband and wide audio without AC power supply or without active speakers, such as outdoor applications or applications that can take advantage of 100 V Technology (multiple speakers can be easily connected and the cable is long). Lb3-pc250 and lb3-pc350 have 100 / 70 V transformers with power taps. The speaker is weatherproof (IP44, can be installed in protected outdoor locations). The basic function speaker has two speakon connectors connected in parallel. The input of the speakon is located under the waterproof cover on the back of the speaker. A waterproof splash cover is installed above the back panel control section to prevent moisture, dirt and damage. Under the cover, you can find the input of speakon, and you can choose to connect channel 1 or channel 2 to the ceramic junction box. Alternatively, E30 wires can be directly connected to the ceramic junction box (with thermal fuse) via pg11 waterproof gland. The speaker has two pg11 positions, which can realize the loop connection of wires. Speaker taps can be selected from the ceramic junction box. Full power, half power and quarter power are available at 100 V and 70 v. There is a dedicated position on the cover for the installation of EOL (line terminal) led indicator. If Bosch EOL circuit board is used, Bosch dedicated line monitoring equipment can also be installed at this position to monitor a single speaker or line. A special notch filter is built into the speaker to filter out 20 kHz pilot tone. This reduces the pilot tone by 20 kHz. The filter can be bypassed by a bridge (standard). The safety components include thermal fuse in transformer, thermal fuse in ceramic junction box (conforming to evacuation standard) and automatic reset current limiting circuit between high frequency filter output and high frequency excitation unit.

Sales telephone (same number of wechat): 13428785305 QQ: 2461903042