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Hi

In general all things are going well with readings. But one question about the lower part of the RTA graph.

I've joined an example where I measured drivers freq responses individually and total. I Wonder why the bottom line in the HF is climing up till the end?

The same but less on LF side too. Is this significant concerning the microphone?

The blue lines are readings from mic close to left ear and red from right side.
Thank you

jacques
 

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Could be the noise floor of the mic or mic pre, or the contribution of the mic and/or soundcard cal files.
 
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