+5dB
Amplifier +5dB – BP/A0/1-01

Designed for urban mobility, the amplifier of the +5dB meets European regulations for reporting to the blind.
Its refined environmental noise analysis system automatically increases the volume of signalling messages by +5dB.
For ambient noise detection, the system uses the speakers that the bus is equipped with, averaging on the resulting reading from the various speakers.
the system does not need environmental microphones
This greatly simplifies the installation even on vehicles already on the market, simply replacing the existing amplifier on the bus.
Thanks to the final d-class power stage, our system allows you to directly pilot all the speakers that the bus is equipped with.
Technical Specifications
Power voltage: 12/24 Vcc (11-32 Vcc)
Absorbed current: 5 A max
Protections: Surges, Subvoltages, Polarity Inversions, and Short Circuit on Speaker Outputs
Power Audio Input Sensitivity: 0.85 VRMS on 150 Ohm ELS
Audio Pre Input Sensitivity: 170 mV RMS on 10 kOhm ELS
Sensitivity Inputs Messages 1-2: 170 mV RMS on 10 kOhm ELS
Microphone Input: 1.5 mV RMS on 680 Ohm
Common way noise re-sending: 60 dB (10Hz – 1 MHz)
Input Separation: >70 dB (1 kHz)
REM-IN Audio Command: 8 th 32 Vcc
REM-IN Command Messages 1-2: GND
Power: 4x 22 W RMS (13.8V) – 4/32 W RMS(24V)
Passing band: 20-20000 Hz (4 ohm – 20W 1 THD)
Size (l x x x x p): 192 x 42 x 101 mm
Weight: 620g
1 power input (key :15) 11-32Vcc 5A max.;
1 mono input per microphone;
1 stereo input for PRE-IN radio;
1 stereo input for POWER-IN radio;
1 mono input for pre-IN internal messages;
1 mono input for external PRE-IN messages;
1 REM-IN trigger input Internal messages;
1 REM-IN trigger input External messages;
1 REM-IN Audio trigger input;
1 USB data input per configuration;
1 control input RS-485;
1 stereo output for internal speaker lines;
1 stereo output for external speaker lines.
