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In Reply to: RE: Zu Soul Supreme sensitivity posted by Dave_K on May 31, 2017 at 14:44:42
Compared to a free field measurement every boundary introduced will result in a 3dB rise in bass output.
So compared to free-field a speaker placed on the floor but away from walls gives +3dB;
placed on a wall another +3dB and corner placement adds a further 3dB resulting in a theoretically possible 9dB rise.
If you now measure SPL from 20-20kHz as a single figure it will seem as if the speaker is remarkably sensitive.
Less so if you measure SPL at 1kHz where corner loading has very little effect.
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