{"product_id":"2pcs-35mm-vu-meter-stereo-audio-level-indicator-audio-meter-backlight-adjustable-audio-level-amplifier-driver-board","title":"2PCS 35mm VU Meter Stereo Audio Level Indicator Audio Meter Backlight Adjustable + Audio Level Amplifier Driver Board","description":"\u003ch3\u003e2PCS 35mm VU Meter Stereo Audio Level Indicator Audio Meter Backlight Adjustable + Audio Level Amplifier Driver Board\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eVU meter backlight voltage: AC6V-12VDC current; 500uA\n+-15%DC internal resistance: 650 ohm + -15%Calibration position: +5Accuracy:\nClass 5Working temperature: -22%-55 degrees CelsiusAttention: Do not connect\nthe output DC12V backlight voltage to the wrong VU meter when connecting the\ncable, because the current will burn out the meter head.Instructions for\nuse:1.AC 12V is the power supply. (It is recommended to use an independent\npower transformer, or an independent winding to power it).2. L, G, R: These\nare the two-channel input terminals for the low-level signal of the driver\nboard, which are used to connect the audio of the mobile phone, computer sound\ncard, pre-stage, and other audio source equipment,and the wiring When L, GND,\nR. correspond to the left, ground and right channels respectively.Note: It\ncannot be connected to the output of the power amplifier, including the car CD\nplayer.3. The adjustable resistance \"5K-V\" is used to adjust the brightness of\nthe backlight.4. Adjustable resistors \"5OK-1 and 50K-2\" respectively control\nthe beating amplitude of the pointer of VU meter 1 and VU meter 2Debug\nmethod:1. Debug the level meter, find a signal generator, adjust the output\nfrequency of 1KHz signal to 0.775v, connect the signal input of the driver\nboard, and point the pointer of the meter to 0DB on the instrument panel. 2.\nTo debug the VU meter, connect the driver board to the audio signal, adjust\nthe adjustable resistance on the driver board, so that the loudness and rhythm\nof the ear to the sound are synchronized with the pointer, so that the pointer\nswing range is moderate.Package Included:2VU Meter1Driver Board1Connecting\nWire\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n  \u003cul class=\"a\"\u003e\n         \u003cli\u003eProduct Information: This kit adopts the mature 5th generation front-level driver board plus classic backlight 35mm VU meter head, with driver board, suitable for telephone, computer, preamplifier, Mp3. VU meter backlight voltage: AC6V-12V DC current; 500uA +-15% DC internal resistance: 650 ohm + -15% Working temperature: -22%-55 degrees Celsius\u003c\/li\u003e\n         \u003cli\u003eDebugging Method: Debug the level meter, find a signal generator, adjust the output frequency 1KHz signal to 0.775v, connect the signal input of the driver board, and point the pointer of the meter to 0DB on the instrument panel. To debug the VU meter, connect the audio signal to the driver board, adjust the adjustable resistance on the driver board, so that the loudness and rhythm of the ear can be synchronized with the pointer, so that the pointer swings in a moderate range.\u003c\/li\u003e\n         \u003cli\u003eAttention: Do not connect the output DC12V backlight voltage to the wrong VU meter when connecting the cable, because the current will burn out the meter head. It cannot be connected to the output of the power amplifier, including the car CD player.\u003c\/li\u003e\n         \u003cli\u003eInstructions :AC 12V is the power supply, L, G, R: This is the dual-channel input terminal for the low-level signal of the driver board, which is used to connect the audio of the mobile phone, computer sound card, preamp, and other audio source equipment. The adjustable resistance \"5K- V\" is to adjust the brightness of the backlight, and the adjustable resistors \"5OK-1 and 50K-2\" control the beating amplitude of the pointers of VU meter 1 and VU meter 2 respectively.\u003c\/li\u003e\n  \u003c\/ul\u003e","brand":"Cywhrvzsf","offers":[{"title":"Default Title","offer_id":44604310454425,"sku":"B0CXXKWSBV","price":141.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0491\/3148\/7385\/files\/B0CXXKWSBV.jpg?v=1721228276","url":"https:\/\/soundstores.net\/products\/2pcs-35mm-vu-meter-stereo-audio-level-indicator-audio-meter-backlight-adjustable-audio-level-amplifier-driver-board","provider":"SoundStore Australia","version":"1.0","type":"link"}