Loudspeaker sound box with normal phase pushing and pulling air energy conversion

Abstract

The invention discloses a loudspeaker sound box with normal phase pushing and pulling air energy conversion, the loudspeaker sound box comprises a box body and a normal phase pushing and pulling air energy converter, a cavity is arranged in the box body, the normal phase pushing and pulling air energy converter is internally provided with a sealed chamber, the normal phase pushing and pulling airenergy converter is arranged in the cavity of the box body and partly embedded in a front panel for outputting sound of the sound box, the normal phase pushing and pulling air energy converter at least comprises a median horn and a bass horn, and the median horn and the bass horn are arranged coaxially along a vertical middle axis of the front panel. In the loud speaker sound box provided by the invention, the median horn and the bass horn form the normal phase pushing and pulling air energy converter device, the two horns are coaxially mounted tandem, the sealed chamber is formed inside, since an air area in the sealed chamber is a constant area, when the horns work, the air in the chamber generates a reverse pushing acting force on the horns, thus, the horns are enabled to be kept in aneffective linear work range, and linear distortion of the horns is reduced.

Description

technical field [0001] The invention belongs to the field of sound boxes, in particular to a sound box with positive phase push-pull air energy conversion loudspeaker. Background technique [0002] At present, the form of loudspeaker box can be generally divided into airtight, inverted, labyrinth and passive forms. All kinds of speakers are designed to isolate the negative wave generated behind the speaker unit, so as to avoid the effective output from being superimposed with the positive wave output from the front after being diffracted. Although the above several forms of speaker design can isolate the anti-phase wave on the back of the speaker, since the speaker unit must overcome the air damping in the box to do work after being installed in the box, the damping effect generated by the negative wave in the box during work On the speaker diaphragm, it has caused a lot of interference to the diaphragm, causing the resonance frequency of the speaker to rise, the transient ...

AI Technical Summary

Problems solved by technology

Although the above several forms of speaker design can isolate the anti-phase wave on the back of the speaker, since the speaker unit must overcome the air damping in the box to do work after being installed in the box, the damping effect generated by the negative wave in the box during work On the speaker diaphragm, it has caused a lot of interference to the diaphragm, causing the resonance frequency of the speaker to rise, the transient response to deteriorate, and the harmonic distortion to increase

Although phase-inverted, labyrinth and passive speakers can effectively increase the low-frequency output, their output frequency response curve is not straight enough and the distortion is large.

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