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Custom system or 5.1 system and LFE 10db boost 6 years 4 months ago #29987

  • RenPa
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@ RenPa,

unfortunately not sure why you can't get REW working on your pc.. Works fine for us here.. :-(
That statement is "But the sound is definitly different between the 5.1 sound system settings in DL and the custom sound system setttings. The EQ with custom seems (yet to confirm) better. " is well known.

Dirac software 5.1 setting adds 10dB for the sub while the Custom doesn't.


Hi Devteam and John,

I finally found a way to measure sound system and custom system via REW.

Please go to this dropbox link for the mdat file:


I measured L,C,R in the same order. First without Dirac, second, Dirac curves whith 5.1 sound system settings (lfe calibrated taking 10db boost in the AVR into count) and third, custom system setting (no boost into count for lfe by dirac).
Please take note that first I checked all channels levels with internal test tones from Rotel and Galaxy CM-140 SPL meter to get 75db everywhere including the sub. But in order to get -12db target in the outputs&level tab in Dirac I had to raise the sub main volume (the button behind the sub) by 10 db. Then I check this new level for the sub with REW and RTA to verify if the 30-60hz signal is at the same level than the 1k hz and confirmed that what Dirac was asking was correct.

I tried to add screen capture for the left channel meausrements.
First Dirac off

Second Dirac sound system 5.1 on

Then Dirac sound system to custom (lfe boost not calibrated)


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Last edit: by RenPa.
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