High Precision Power Amplifier VU Meter Preamplifier Audio Level Indicator with Driver Board

Features 1. INCLUDED PARTS: Including 2 VU meters and a driver board, and equipped with flat cables and audio cable, easy to connect and drive, convenient and durable. 2. EASY TO ADJUST: A driver board can control 2 VU meter heads, with 3 potentiometers, and can adjust the backlight brightness and pointer swing amplitude. 3. WITH BACKLIGHT: The audio level meter with backlight design, easy to operate, and can read clearly even in dim environment, which is reliable and practical. 4. WIDE APPLICATION: This VU meter and driver board kit is suitable for DIY preamplifier, home recording equipment or car audio conversion equipment, etc. 5. RELIABLE MATERIAL: These accessories are made of excellent ABS and PCB materials, which are impact and wear resistant, and have stable performance. Specification Item Type: Audio Level MeterProduct Material: ABS, PCBMaximum Current Sensitivity: 500uA±10%Internal DC Impedance: 650Ω±10%Insulation Resistance: More than 50MΩFriction: ±1mmPointer Length: Approx. 37 ± 1mm / 1.5 ± 0.04in, from needle end to axesPointer Width: 0.45 ± 0.05mmMeter Installation Position: VerticalBacklight: Yellow background, orange light bulb 12V 55mAScope of Application: Suitable for DIY, recording studio, medical equipment, etc.Weight: Approx. 184g / 6.5oz How to Use AC DC12‑16V power supply, it is necessary to distinguish between AC and DC input terminals, and the power amplifier output terminal is trusted. When wiring, L, G, and R correspond to the left, ground, and right channels of the audio source device respectively. If the input is a mobile phone, computer sound card, front stage Wait for the sound source, please turn the DIP switch 1 and 3 to the ON terminal. If the input is the output terminal of the power amplifier, please turn the DIP switch 2 and 4 to the ON terminal, the signal will be compressed 11 times. The adjustable potentiometer 100R‑V is to adjust the brightness of the backlight of the VU meter. The adjustable potentiometers 50k‑1 and 50k‑2 control the beating amplitude of the pointers of the VU meter 1 and VU meter 2 respectively. Package List 2 x VU Meters1 x Driver Board6 x Cables1 x Audio Cable1 x User Manual