The treble of the speaker is emitted by the tweeter, which has the characteristics of short radiation distance and narrow radiation range. If the tweeter of the speaker is too far away from the person and the tweeter is not facing the person's ear, the treble will be weak or insufficient, and the sound will be dull.

If you place the speaker closer (speaker power is within 100W), it is best to be within 4 meters of people, and the height of the speaker is parallel to people's ears---that is, the tweeter is facing the ears of the person listening to the music. (A bookshelf box requires a tripod to raise the height of the speaker). The treble radiation is the strongest, the treble is the most abundant, the details are more active, and the sound is not dull.