FBT Audio MPA5120120W power amplifier

Description
The MPA 5120 booster has an RJ45 input for connection to MBT 1101 pre-amplified microphone bases simply by means of SFTP CAT5E shielded cables. There is a special balanced input (TEL/EMERG) with a transformer and automatic activation of precedence (VOX) on the rear panel. Controls for ajusting the level and thr activation threshold are present on the rear panel. This input can be used for connecting the appropriate audio output of a telephone switchboard. This equipment has a large number of devices for protection against overloads and short circuits (an output current peak-limiting circuit, a thermal circuit-breaker inside the power transformer, a resettable thermal circuit-breaker in contact with the power-transistor heat sink, main fuses). In addition, each unit has a cooling fan, with automatic control of the speed depending on the temperatures of the heat sinks to which the power devices are applied.

Features
Balanced line in/out (XLR-F and XLR-M sockets)
Unbalanced line input (double RCA socket)
MBT 1101 microphone station input (RJ45 socket)
Telephone/emergency audio input for priority calls with adjustable threshold and sensitivity
Front panel overall volume control and treble/bass controls
Rear panel selector switch for enabling/disabling front-panel tone and volume controls
Constant voltage (50/70/100V) or 8 Ohm impedance loudspeaker line output
LED-type Vu meter for clear and immediate monitoring of output power
Contacts for activating precedence on the line input
Alerting signal (chime) with level control
Selectable 230/115Vac and 24Vdc mains power supply