Many people think that low frequency is easy for loudspeakers, but in fact, many loudspeakers on the market still cannot reproduce low frequencies of 20Hz and below, and can only make up for this deficiency by exaggerating the medium frequency. This leads to the rough, monotonous, and less believable experience of bass because it makes the audience unable to understand what the artist or director wants to present in the content.

A world-class loudspeaker can provide the deepest low frequency of the content played, even reaching 20Hz below the level of human hearing. Of course, within this frequency range, the audio content can only be felt, but not heard!

World-class loudspeaker bass should only include the exact frequency you should hear, and its proportion is completely faithful to the source of movies, music, or other content. This is an extremely important factor in creating a convincing and credible home theater experience because it reflects what the artist or director wants you to hear and feel in the purest form, rather than the sound and frequency added by the loudspeaker itself.

An excellent ultra-low frequency speaker has speed in the transients of music and movies, so it can keep pace with the content. When the complex tone, intense action scenes, and other full-range content are presented, the poor loudspeaker is difficult to keep up with the pace of full-range speakers, which leads to the loss of details. The world-class ultra-low frequency speakers stop playing when they should stop playing bass and restart at the perfect time, so the sound cannot be distinguished from the output of speakers, and all sounds can be played in perfect coordination.

I have noticed or used the Bluetooth speakers near me. The differences between them can be heard by playing the same song, especially on the loudspeaker. The processing of many sounds and details is very obvious when playing.