A Meridian 218 can access the menu functions of the M6 using the Meridian Control app. An AC12 can be used to send the RS232 codes as well if you are handy with a PC and terminal programs.

The M6 is an impressive speaker for its size. It can put out amazing bass and is nicely balanced. The. M6, 3200,3300 and inwall speakers with no displays are best used with a Meridian speakerlink source or processor where these functions can be accessed from the menus of the Device or the Meridian Control
App. Once available separately a Meridian B link would also allow access to these settings via a Bluetooth connection.