Child lock

Short answer

Push the Source selector and the Light mode buttons for 2 seconds to toggle child lock on or off.

Close-up of a Marshall Bromley 450 speaker with control knobs and buttons on top and the Marshall logo on the front grille.

Child lock is a safety feature that prevents the user from accidentally increasing the volume to dangerous levels.

  • Push the Source selector and the Light mode buttons for 2 seconds to toggle child lock on or off.

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