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Baldwin Boxall VIGIL2 Quad 50W Class D Amplifier BV050Q

Baldwin Boxall VIGIL2 Quad 50W Class D Amplifier BV050Q

Baldwin Boxall VIGIL2 Quad 50W Class D Amplifier BV050QThe Vigil2 BV050Q contains four independent 50 Watt Class D Power amplifiers each with one 500 mV balanced input and a 50 Watt 100V Line output. The front panel status indicators show Supply Healthy Overload Over Temperature and Output Level 10 and 100 max output level for each amplifier. The Active Indicator illuminates when the amplifier is not in Sleep Mode. CLASS D amplifiers are 80 efficient therefore reducing unwanted heat dissipation and power input requirements. Rated output power is obtainable using a 22V battery supply.The BV050Q has a Sleep mode automatically reducing the standby current requirement to typically 50mA per amplifier when operating on batteries. Channel gain may be individually set using the potentiometers on the board behind the front panel. The audio inputs to the amplifiers are presented on separate RJ45 connectors each connector providing the balanced audio input and a ground connection. The outputs are presented on 6-way plugscrew termination connectors providing 50V or 100V output. The 24V DC input is presented on a 2-way crimp connected plug and socket. The power output stage of the amplifier is protected against overload conditions i.e. short circuits or abnormal loads etc. Should the amplifier be subjected to an abnormal load the input to the power amplifier is attenuated to a safe level.The amplifiers output voltage is also sensed and should it exceed 100V the input signal will be attenuated ensuring safe operation without creating unnecessary distortion. Over temperature protection is provided using a sensor attached to the output stage heat sink. Should the temperature exceed 90 Degrees Celsius the input signal to will be attenuated to a safe level and the Overtemp LED will be illuminated. If the system is under surveillance it will cause the surveillance detector to indicate a fault condition due to the gain reduction. Up to three BV050Q Amplifier modules may be mounted in one BVMF equipment frame or more normally two amplifier modules and one switched mode power supply charger module.

GBP 1973.16
1

Baldwin Boxall Impedance Monitor BVLAM

Baldwin Boxall Impedance Monitor BVLAM

Baldwin Boxall Impedance Monitor BVLAMThe BVLAM provides 8 zone 100V line relay switching loudspeaker zone selection from 1 amplifier.It incorporates impedance monitoring on all 8 loudspeaker lines when the zone is not selected. If the load increases impedance decreases the appropriate fault LED illuminates steady and if the load decreases impedance increases the fault LED will flash.The impedance changes for a fault to be detected is selected to either 20 or 40 using the mode DIL switch 8. If the impedance falls to approximately 50 of its original value the line is considered to be short circuit and will not be selected to the amplifier.All 8 zone select inputs will access when it is between 2 to 6.5V. An open circuit access input above 15V will be indicated by the appropriate fault LED flashing and a short circuit access input below 2V by the fault LED illuminating steady.Under all fault conditions the OK LED will extinguish and the common fault relay volt-free contacts to change state.Key FeaturesRack-mountable unit 1U high. Two units can be mounted across one rack shelf.Provides eight loudspeaker zone selection from one amplifier.On receipt of a signal from an input ie zone selecting microphone the BVLAM triggers the amplifier to output to the selected zone.An internal relay enables zone switching.The BVLAM provides constant impedance monitoring on each of the eight loudspeaker circuits when not selected.LEDs are used to indicate a drop or increase in impedance - set at either 20 or 40 by DIL switches.Note due to detection accuracy BVLAM is only suitable for BS5839-8 voice alarm systems with less than five speakers per circuit.Access faults on any of the zones from the microphone are indicated by LEDs on the BVLAM.Additional LED indicators are provided to show system healthy and supply healthy.The Baldwin Boxall Impedance Monitor BVLAM provides a combination of zones relay switches from one amplifier. It changes if a fault is detected.

GBP 880.90
1