Wait, that can't be right. That tells me that 0db should be about 63-64 degrees from the far left of the scale.

SQRT of 2 is 1.414...

90 divided by 1.414 is 63.649...

So that means 0db would be on the left third of the scale instead of towards the right.

I'm doing it wrong or not understanding something.
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Tony Fabris