Description
Pre-amp VU Meter with Adjustable Backlight Drive Circuit Board DB Audio Amp Level Power Meter PCB Drive Board DescriptionVU Header Meter Driver Board Front Stage with Adjustable Backlight DB Audio Power Amplifier Level Meter Drive ModuleSpecification:Power supply: AC / DC 12-18v ? 5WBacklight power output: 1.25v-11v/50mASignal input: ? 0.775VMaterial: PC + ABSSize: 60 * 50 * 25mm/2.36*1.96*0.98Debugging Method:1. Level meter debugging, find a signal generator, adjust the output frequency 1kHz, the effective value of the signal is 0.775v, connect with the signal input of the drive board, and the pointer of the meter head points to 0dB.2. For the debugging of Vu meter, the audio signal is connected to the drive board, and the adjustable resistance on the drive board is adjusted to synchronize the loudness and rhythm of the ear to the sound with the pointer, so that the pointer swing range is moderate; when the maximum sound is reached, the pointer points to the 100% position of the label or the maximum scale of the label.Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!2. Please allow 1-2cm measuring deviation due to manual measurement. 1 X Driver Board
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