Each full-range speaker provides both a mic and a line input with independent level control, as well as an overall speaker output-level control. The line input of the StudioLive AI loudspeakers has been calibrated to accept a +24 dBu signal and provides 24 dB of attenuation. The Speaker Output Level control provides another 24 dB of attenuation.
For most applications, we recommend setting the Line Input Level and the Speaker Output Level to 0 dB (fully clockwise), then lowering the Speaker Output Level as needed. This will allow you to operate your mixer at or around unity gain and will maximize the dynamic range of your mixer and your StudioLive AI loudspeakers. When not in use, leave the Mic level at the Off position.