[. . . ] Use a 6mm Allen key to change the vertical position Reproduction or publication of the content in any manner, without express permission of the publisher, is prohibited. [. . . ] Use "good quality" and suitable hardware to fix the wall bracket against the wall: o For walls made of brick use at least 10x60mm Hexagon head screws and wall plugs. Once the wall bracket is fixed against the wall you can choose the desired vertical angle (0° to 20°) for the speaker cabinet: (see photo1) You can orient the supporting arm over almost 180°, don't forget to fasten bolt afterwards! (see photo 1) Install the supplied "open eye wedge anchor" as shown on photo 2. Make sure it's well fastened so it can hold the cabinet when it accidentally falls. Put the speaker cabinet on the wall bracket and secure it with a separate "safety chain". (see photo 2) Always use a certified safety chain that can hold 12times the weight of the device when installing the unit. [. . . ] Une fois le support mural fixé au mur, vous pouvez choisir l'angle d'inclinaison (de 0° à 20°) de l'enceinte: (voir photo1) Vous pouvez orienter le bras du support sur environ 180°. [. . . ]