Well im at the point where most of my upgrades are as far as i want them to be for now as i live in an apartment. So my next task is some more/ proper acoustic panels. I have 4 DIY ones i made a few years ago. I will snap some pics and post them up after. Being in an apartment limits me to what i can really do. So far i have 2 panels behind my mains and the other 2 behind the couch. Now if someone can help me find some info on proper placement that would be great. When i first put these up i believe my gf held a mirror at each main and i sat in the middle of my seat and put the panel on the back wall where i seen it in the mirror. Now sure if this is proper or not, but i would like to do more to help my room. I just added a great gamma to my sub that sits on carpet and concrete floor.