The bigger the subwoofer, the better in general. The sound we hear is actually produced by the vibration of the speaker, and the volume of sound we hear is proportional to the volume of air pushed by the vibration of the speaker. The larger the bass unit, the same volume is emitted, that is, the volume of the same volume is pushed, the shorter the distance needed to move, so that the whole loudspeaker works in the linear region as much as possible, and the nonlinear distortion is minimized. At the same time, the speaker moves back and forth the same distance, and the larger bass unit pushes up the volume of air, resulting in a higher volume.
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