DLHiFi 2pcs 35mm VU Meter Stereo Audio Level Indicator Audio Meter Balight Adjustable + Driver Board For HiFi Amplifier-choose 2

This is a 35mm VU meters with drive boards Work for Phone ,Computer,Pre-amp, Mp3 Can't Connect to Amplifier Output DC internal resistance: 650 ohm + -15% Calibration position: +5 Accuracy: Level 5 DC current; 500uA +-15% Balight: LED*3 Working temperature: -22%-55 degrees Celsius VU Meter Balight voltage: AC6V-12V Pay special attention not to connect the output DC12V balight voltage to the wrong VU meter when connecting the line, because the current will burn the meter head Instructions for use 1. AC12V is the power supply. (It is recommended to use an independent power transformer or independent winding power supply! 2.L, G, R: This is the two-channel input terminal for low-level signal of the driver board, which is used to connect the audio of mobile phones, computer sound card pre-stage, and other audio source devices (the signal is the signal that the earphone can hear). L, GND, and R correspond to the left, ground, and right channels respectively Note: Can't connect to the power amplifier output Can not connect to the output of the power amplifier. Can not connect to the output of the power amplifier. Including car CD player cannot be used 3 Adjustable resistance "5K-V" is to adjust the brightne of the balight. 4 Adjustable s "50K-1 and 50K-2" respectively control the beating amplitude of the pointers of VU meter 1 and VU meter 2, Debugging method 1. Level meter debugging Find a signal to adjust the output frequency of 1KHz, the effective value of the signal is 0.775V, and then connect the signal input of the drive board, and the pointer of the meter head points to the 0DB of the instrument panel. (If you don't have a signal , you can download an APP signal with your mobile phone, and you can adjust it according to the previous method) 2. The debugging of the VU meter, the adjustment of the VU meter is much simpler, the driver board is connected to the audio signal, and the driver board can be adjusted. Adjust the resistance to synchronize the loudne and rhythm of the ear to the sound with the pointer, so that the pointer swings moderately so that the pointer points to the 100% position of the sign or the maximum value of the sign when the sound is maximum. Paage include 2pcs VU meter 1pcs Driver Board With Connect cable

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Shping and Pa All it will be double cheed and well paed before sending.It will be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the paage to the destination(for e areas,it may take a little longer). 

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