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Severe high frequency rolloff 2 years 1 month ago #43285

  • gmac34
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hello, I noticed that my unit has a severe rolloff measuring multiple different equipment,
the rolloff is noticeable over 10khz. I'm using the provided calibration.
Is my unit defective? What cheks can I do?
thank
Giovanni

An example:
how the measurement should look:


and this is what I get:

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Last edit: by gmac34.

Severe high frequency rolloff 2 years 1 month ago #43287

  • JohnPM
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Are you using it with the sample rate set to 48 kHz? If the sample rate is 44.1 kHz the OS will resample and roll off sharply above 20 kHz.

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Severe high frequency rolloff 2 years 1 month ago #43288

  • gmac34
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Hello John,
yes it is set to 48 khz, Mac OS doesn't give me any other option and I set also REW to 48 khz.
Thanks

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