Good morning! I have a 75" TV, a mini sub and an arc ultra in my room. All that equipment that I mentioned is in front of my bed. Now I bought 2, it was 300 to put them on the dry wall of my bed about 3' away From my head, the rasks I bought for the wall are annoying. My question is whether the 2 era 300s have to face the wall where the TV, arc ultra and sub mini or in direction to my head?