Ken is right. There is no exact way to measure this. All types of variables come into play when dialing in "your" tone.
There are no specific amp settings - it is all subjective to your desired tone.
My experience has been to set my Smith bass flat, then EQ the amp to the point I like it. Next I use the EQ controls on the bass to "fine EQ" the tone if needed.
Again, these are just my observations - no scientific ****ysis of sound waves and such
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BTW: New strings seem to help a lot - I prefer Smith Burners on all my axes
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