This is how to make your own inexpensive diy home cinema flat screen tv soundbar mounting brackets for mounting a soundbar above a television. The TV and soundbar are Panasonic but other makes should be similiar. The brackets are made from 500mm of 20mm x 20mm Aluminium angle. The mounting bolts for the tv are 12mm long, but you must make sure that the bolts you use are appropriate for your tv. The brackets are very solid and having the soundbar above the tv has enhanced the sound.
These brackets were cheap to make and are stronger and lighter than the commercial ones that I have seen.