SoundHound,

Interestesting suggestions. So for my system, I would:

Disable Logic 7, etc., and go to plain vanilla DD decoding

Set my volume control at +0dB.

Play the Avia tones.

And calibrate to 85dB? Is that what you're suggesting?

Would I set the volume to -5dB and then calibrate to 80dB, seeing as how the de facto standard Radio Shack SPL meter is more accurate in the middle?

Jeff