I am a Audyssey Installer. We measure totally different compared to the Audyssey way. The endresults are superior compared to the Audyssey Way. Because with the Audyssey methode you loose too much dynamics and drive. We also measure differently then 75 db. I will not give this information, because I never had such a big advantage over other audio shops.
With Audyssey pro you get a stunning level of integration with your subwoofer. Sofar I never auditioend this level at any show or client over 16 years of time.
Audio is all about comparing and testing. When you try things differently based on your thoughts it is often easy to create a higher endresult.
I have had a few surround specialists hearing my set. One of them said: you have gold in your hands. This is the way how I measure a subwoofer. I call it stealth integration. Lst year at a show many people came to me and said: we cannot hear your subwoofer. I played Kraftwerk at very high volums. It goes very deep ( my sub goes to 16hz) but the most special thing is that I use it till 140hz. This makes the low freq. become physical apparent. Even when the double bass or drumm is on the left side of the recording, here is also the energy and dynamics coming from. Subwoofer stands 2,5 metres from this place.
I do not have any problem with a higher roll of. Because you can influence this part before you do the measurment.
When you look further in sound, you will find out that you can achieve a much higher endresult!