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Old 08-04-2020, 02:44 PM
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W9TR W9TR is offline
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Based on your room dimensions you will have primary modes (resonances) at 40 Hz, 43 Hz, and 70 Hz, for the 13, 14 and 8 dimensions, respectively. You will also have modes at 2x, 3x, 4x these frequencies, which REW is showing you.

These modes will be with you unless you acoustically treat the room, especially the 40 Hz ones, which are super hard to eliminate.

But you can minimize their contribution to the sound of your system by moving your speakers and your listening chair away from walls to the extent it is possible.

If you have a sub you can try moving it out into the room to reduce coupling with these modes.
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