Features： The signal input: driver board provides two kind of signal input methods:HIGH、GND、HIGH/LOW、GND、LOW，choose any one of them! (as in volume potentiometer, or the power output signal, take the pointer will swing control in volume) (1) LOW, GND, LOW: this is driven plate LOW level signals input terminals, used to refute CD machine, computer sound card, the former stage,audio source equipment audio signal, wiring in corresponding: left, GND, and right sound channel. (2) HIGH, GND, HIGH: this is the driver board HIGH level signal input terminals, used to refute after borne power amplifier amplification power signal, driven plate with attenuation circuit, will the power output of the HIGH strength level to drive after attenuation IC, attenuation circuit contains R3 and R2 resistance, connection borne power amplifier output terminals, drive the board two HIGH terminal, by two of the power amplifier were red terminals, the two black borne power amplifier terminals, choose which any one by driving the GND terminal board can. The driver output: V , V-terminal: two groups of 12 V backlight power supply output terminal , pay attention to the connection of the light source voltage and matching headers positive pole and negative pole. ,-terminal: connect " " and "－" terminals of VU meter. pay attention to the connection positive pole and negative pole.. The power supply parameters: Working voltage: AC/DC 12-15 V wide working voltage range (suggested independent power transformer, or independent power supply) The power rating: 3 W Weight：25g PCB size: 60 x 39 mm Package include： 1 x TA7318P VU Meter Driver Board 1 x connecting line(half meters,divides into two to use)
1 x connecting line(half meters,divides into two to use)
