LBB 1930/20 120 Watt power amplifier in a 19” 2U high case for rack mounting or tabletop use. LEDs on the front panel show the status of the amplifier: audio output level, power, and supervised functions. This high-performance unit fulfills a wide range of public address requirements at a surprisingly low cost.
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The amplifier is protected against overload and short circuits. A temperature-controlled fan ensures high reliability at high output levels and low acoustic noise at lower output levels. An overheat protection circuit switches off the power stage and activates an LED on the front panel, if the internal temperature reaches a critical limit due to poor ventilation or overload.
The unit operates both on mains power and on a 24 V battery power supply for emergency back up, with automatic switchover.
The system has two balanced inputs with priority control, each with a loop-through facility. This makes it easy to connect remote systems that require priority control. An additional 100 V line input is provided to connect the amplifier to a 100 V loudspeaker line to provide more power to remote locations.
The amplifier has 70 V and 100 V outputs for constant voltage loudspeaker systems, and a low impedance output for 8 ohm loudspeaker loads.
The LBB 1930/20 has two separate priority controlled 100 V outputs for zones that only need announcements made via the priority input, and for zones that will not receive announcements made via the priority input.
|Operating temperature||-10°C to +55°C|
|Mounting||Stand-alone, 19" rack|
|Max Power||274 W|
|Line loop-through output||2|
|Frequency Response||50 Hz to 20 kHz (+1/-3 dB @ -10 dB ref. rated output)|
|Output Power||120 W / 180 W|
|Power Consumption||400 VA|
|Inrush Current||8 A|
|Voltage||230 VAC ±10%, 50/60 Hz|
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