I have to agree with mudder, too many times homeowners grab to powerful of an amplifier which can cause problems down the line, start at 10 db and work from there. Lots of factors in play on this, first of all throw a 2 way in between the receiver and amp, take the first one to your TV location ( if not in utility room) and the second one to your amp, no sense pumping all the extra into the TV right there. 2nd is your home cabling 6 or 59, the length of the runs will also be a factor. Just start at this point and go from there