Amplifier BP/A0/1-01
Multi-channel audio amplifier specific for mobile vehicles dedicated to public transport. It integrates the detection function of the ambient noise level, allowing the audio reproduction with volume commensurate to the environment (+5 dB ratio). The amplifier has two separate independent stereo output channels that can drive the speakers directly. It provides four different inputs dedicated to four sources individually selectable through four different commands.
The amplifier has four different inputs dedicated to four sources individually selectable through four separate commands:
- Input 1: audio
preamplified or amplified generic stereo audio, dedicated to entertainment (radio, cd player, MP3…..) - Inputs 2-3: message 1-2
single preamplified audio dedicated to information messages to the users (it is possible to use the ambient noise detection function) - Input 4: Microphone
dedicated to the microphone on the vehicle, if present
- Supply voltage: 12÷24 Vcc (11÷32 Vcc)
- Absorbed current: 5 A max
- Safeties: Over and under voltages Polarity inversions Output short-circuit SPEAKER
- Audio power input sensitivity: 0,85 Vrms su 150 Ohm ELS
- Pre-Audio Input Sensitivity: 170 mV rms su 10 KOhm ELS
- Input sensitivity 1-2: 170 mV rms su 10 KOhm ELS
- Mic Input: 1,5 mV rms su 680 Ohm
- Common-mode rejection: >60 dB (10Hz – 1 MHz)
- Inputs separation: >70 dB (1 KHz)
- REM-IN Audio Command: >8 Vcc (32 Vcc max)
- Message Command 1-2: <2 Vcc (32 Vcc max)
- Power: 4×22 W rms(13,8V) – 4×32 W rms(24V)
- Pass band: 20÷20000 Hz (4 ohm – 20W 1% THD)
- Sizes (L x H x D): 192 x 42 x 101 mm
- Weight: 620g
