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Power Amplifiers

Power Amplifiers. Power Amplifiers. 5 Versions. LBB 4421 1x 500W Power amplifier. LBB 4422 2x 250W Power amplifier. LBB 4424 4x 125W Power amplifier. LBB 4426 4x 60W Power amplifier. Discontinued. LBB 4428 8x 60W Power amplifier. Power Amplifiers. 5 Versions.

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Power Amplifiers

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  1. Power Amplifiers

  2. Power Amplifiers • 5 Versions • LBB 4421 1x 500W Power amplifier • LBB 4422 2x 250W Power amplifier • LBB 4424 4x 125W Power amplifier • LBB 4426 4x 60W Power amplifier Discontinued • LBB 4428 8x 60W Power amplifier

  3. Power Amplifiers • 5 Versions • LBB 4421 1x 500W Power amplifier • LBB 4422 2x 250W Power amplifier • LBB 4424 4x 125W Power amplifier • LBB 4426 4x 60W Power amplifier Discontinued • LBB 4428 8x 60W Power amplifier • State of the art Class-D power amplifier

  4. Power Amplifiers • Selectable 50V - 70V - 100V Output per amplifier channel • 1 Control relays per amplifier channel • 8 Control inputs • Analog audio inputs: • 2 inputs for the 1, 2, 4 channel amplifier • 4 inputs for the 8 channel amplifier • Microphone / Line level input • Music source (BGM or AVC) • Microphone for Calls and noise sensing (AVC)

  5. Power Amplifiers Amplifier supervision • Mains power / Back-up power • Amplifier supervision • Internal temperature sensing per power block • Noise sensing microphone input, dynamic and condenser mic. • Output short circuit and ground short detection • 8 Supervised Control inputs • Internal spare amp switching for 100V output • Optional: Wire Free Line supervision

  6. Power Amplifiers • DSP Audio processing for each amplifier channel • 3 Band parametric equalizer • High Pass filter - Low Pass filter • High Shelve filter - Low Shelve filter • Output level control • AVC, Automatic Volume Control • Audio delay 10mSec - 1.2 Sec

  7. Cooling Air Inlet Cooling Air Inlet LCD Display Rotary Switch / Push Button Headphone Socket Power Amplifiers

  8. Control Inputs Mic/Line Input Cooling Air Outlet 48V DC Back-up Mains Switch CH.2 CH.1 CH.4 CH.3 Mains Inlet System Bus Connections Control Relays 100V In / out Power Amplifiers 1, 2, 4 channel amplifier

  9. System Bus Connections Control Inputs Mic/Line Input Cooling Air Outlet 48V DC Back-up Mains Switch CH1 CH.2 CH.3 CH.4 CH.6 CH.5 CH.7 CH.8 Mains Inlet Control Relays 100V In / Out Power Amplifiers 8 channel amplifier WLS1 WLS2 Spare switching Vol. override Tech. Pres

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