So, you’ve purchased some acoustic treatment (from Sweetwater, of course), and you’re all set to stick it up in your studio. But where in the heck should you put it for best results? Here’s an easy way to decide: Get a small mirror, and a willing accomplice. Sit down in your normal mix position, and have your partner move the mirror along the walls around you. Anyplace where you can see the reflection of your monitor’s tweeters in the mirror is a prime location for acoustic foam. Don’t forget that the ceiling can also be a source for reflections!