Hello friends😀 I do not remember where to find the settings for the internal speakers on my S975. When I connect it to my BOSE PA system the speakers remain on. I have to put sn sdapter in the headphone jack to silence them. This was not the case before. Please refresh my memory😀 I found the solution when I searched the topic on this wonderful forum. It was function, utility, config 2. select the off option. But I wonder if my keyboard is faulty, because after some time the speakers come on sgain. This causes feedback. I have a gig tomorrow, wish me and my old keyboard luck😀😀