I prefer to use both the receiver's test tones and the dvd. I find that most receivers differ from the dvd test tones on most equipment. In this case it sort of depends on how much 'other' stuff you have as to which you would want to use as a reference point. If DVD is really the only multichannel source you use, then adjust according to the disc's test tones. If you have other multichannel soruces that you tend to use, tune to the receiver's test tones.