
To calibrate the sensitivity of your IMG STAGELINE VU-800 Pro VU Meter for accurate audio level indication, follow these steps: First, ensure your audio system is set to its optimal level. Then, apply a 1 kHz sine wave test signal, either 0.775 V or 1 V, to the AUDIO IN jacks. You can generate this signal using a tone generator, oscillator, test CD, or any audio device set to 0 dB. Power on the VU meter, select your preferred display mode, and use a small screwdriver to adjust the sensitivity controls, labeled ADJUST. The upper control manages the left channel, and the lower control manages the right channel. Fine-tune these controls until the level display consistently indicates 0 dB for each channel. This process ensures the VU meter accurately reflects your audio levels.


