Corij

I've had these suckers up for a while now, and I'm sure I'm missing a few spots in the room that could use them. In most of the studio pictures I see, whether home-based or pro, there's always that typical configuration of foam on the wall behind the speakers. If I understand correctly, the foam is there to tame standing waves, mostly in the high-mids and high frequencies? As for bass control, most articles I've read on the subject advise bass traps on the corners of the wall opposite the monitors, basically behind your back. Foam on the walls apparently doesn't do much for bass control...(still learning) So I ask, what is the foam behind the monitors actually controling, or taming? Sorry for a seemingly basic question but again, I'm still on the quest to create the best monitoring environment I can in this tempermental room of mine! Should the foam go pretty high up on the wall or would about a foot above the monitors suffice? What about the side walls, I've read about the mirror technique but it seems you just look at at where to monitors are facing (from their angles positiion) and place some foam on that spot? I couldn't thank you enough for some good advice on this one!