Triangle GAMME STRATOS 260 Mode D'emploi page 21

ENGLISH
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Now you can place the unit on its feet. The connection cable can be passed through the leg using the hole A. B can be filled with sand. This is
not obligatory.
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Place the protective washer C under the stainless steel spike A.
Adjust the adjusting keys to obtain the best stability and good perpendicularity between the speaker and the base D in relation to the floor.