4 Channel digital automatic ambient noise level controllerPrevious page


The Boxxline BALC-44 digital ambient noise controller is designed to work with the ambient noise sensor (BALC-SCM / BALC-SSM / BALC-SWM) to adjust the output level according to the detection of the surrounding ambient noise level. It is necessary equipments for applications like airport, train station, metro station, hospital and stadium, the system itself will adjust the output at a comfortable level based on the detection of working noise, voice loudness and clearance after program set up, thus it will save human operation from one time to time to operate on the system according to work time and off work time.

It is designed with four separate channel controller, with 4 ports for sensor support both serial connection & parallel connection, max channel sensor capacity is 16 units. The digital solution ensure the controller of higher capacity and longer communication distance for 3km.

It is built-in a CPU & LCD display with program buttons, thus all operation could be done by itself or through RJ45 to PC, an user-friendly software in English is supplied for remote program and set up. The system could work stand alone without PC software after configuration. While a RS232 port is supplied to communicate with third party system. 4 separate channel line inputs and line outputs for PA and voice evacuation system. Built-in automatically ambient noise control (ANC) and output level adjustment function (ALC). Both AC 230V and DC 24V operation system.


19" (483mm wide) rack mountingYes
Height1U (44mm)
Depth209 mm
Depth (incl. front)219 mm
Line Output4
Line Input4
Control Channel4
Sensor Capacity16
Monitor Channel1
Input Level0dBu 20KΩ
Output Level0dBu 600Ω
Max Output Level+16dBu
Control Gain24dB
Noise Frequency Filter4
Communication PortRJ45 / RS232
Frequency Respons 20-20KHz (+1/-3dB )
Power SupplyAC ~230V/50Hz & DC 24V
Power Consumption35W
Main Construction MaterialPanel: steel plate / Case: steel plate
Weight3,0 Kg


Technical Sheet BCAL SERIES0.39 MB - pdf
More info

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