This product is designed to reproduce the audio portion of your home entertainment environment with accuracy and detail that will satisfy the most discriminating listener.The AC Series speakers can be mounted in ceilings, but are typically used in walls.The speakers should be located so that they provide even coverage at your listening position.In most modern buildings the wall studs are positioned on 16” centers, providing a space between the studs of approximately 14 3/8”. The specifications chart shows the appropriate cut out sizes. Additionally, you should allow an extra 3/4” in all directions behind the Use a stud finder to locate the vertical studs behind the wall surface. Also, you should now check for obstructions like cross bracing above and below the desired speaker location.