Originally Posted by kbarnes701
What I mean by 'approved' is the way the guy who wrote the software says to do it.
He said using your AVR's test tone is a valid way to do it, you're welcome to ask him again, but I provided the information from the author which disagrees with what you are saying. I feel you should stop using him to support your position as you are not paraphrasing him accurately.
It seems John perhaps is not up to speed on the way Audyssey works wrt to the test tones in the AVR. As I've said three times now, the AVR test tones bypass Audyssey. So the tones will be right when Audyssey is on (for 75dB) but not for when Audyssey is off. Half the time the tones will be incorrect. Audyssey can boost by up to 9dB and cut by up to 6dB. This means that there is every chance that running the test tones with Audyssey off will NOT deliver 75dB at the MLP. This means that using the AVR test tones is not a valid way to ensure that the AVR is delivering any known value of SPL after calibration. Just use a nice cheap Ratshack meter, like John suggests, and all will be guaranteed to work as designed.
I've said more than enough on this pointless topic now, so this is going to be my last word on it.
Audyssey EQ is bypassed when playing the test tones, Not the trim levels. The test tone is calibrated to 75db. That's the whole point of the test tones, for levels. Really unsure where you are going with that????????????
The ratshack meter confirms this approach is valid. If you want to waste the time and money acquiring one to verify what is true (and multiple people are telling you which have tested it), go for it. But if you are going to make recommendations to other people, it should not be to go buy an SPL meter for this purpose.
I'm still not hearing a technical reason why the simple, no extra hardware/money approach does not work.
I hope I'm not coming off argumentative as some of the posts on this topic are, just trying to get accurate info out there.