I am looking for advice please, having read quite a few forums on speakers for behind AT screens and baffle wall construction I am still not sure on the best way to go. Last year I started a dedicated cinema room in the loft. At the time I was using Apex A40 for LCR. Whilst they sounded quite good I thought they were missing something that I used to get from my B&W 603 floor standers, and have recently tried them behind the screen as well. I have also got a rel S2 behind the screen as well as another rel at the back of the room. I have mini DSP them and used my Arcam avr550 and ran Dirac. It all sounds ok, but I know it could be a lot better. Before I start chucking money on new speakers, subs etc, I am sure I can do more with treatments behind the screen and in the room. I can go back to Apex if the will be better for behind the screen as well. I have about 60cms behind the screen and gave a load of acoustic rock wool in the garage to use if I just knew how to do it properly. Any suggestions would be appreciated, I don’t mind refining the behind screen area completely.