(1) The middle part of the voice and the singing voice should be wide. If the singing voice of different styles of the singer sounds a little bit of nasal sound, it is a bit boring or hard, and it is sure that the speaker has some problems with the response to the middle frequency band.
(2) The mid-bass should be free of distortion. The study of the midrange is dominated by vocals. The vocals are within the frequency range of 150Hz-2500Hz, including speech and singing, mainly for the intermediate frequency of the speaker. The staining phenomenon is distinguished, such as vocal instability, inconsistent tone, and obvious low-pitched "nose" phenomenon in the human voice. The sound is dry, empty, and stuffy, and these can be regarded as obvious defects of the speaker. . Even the smallest bookshelf speaker will still have some output in the low frequency range. If you hear the bass guitar sound is not clear, some are too loud or rumble, even if a certain scale or a certain scale is too loud, it means the speaker pair The response from 60 to 150 Hz is not very good. If the thick male voice sounds a bit of "cavity" or is somewhat artificial, it also indicates poor response in this frequency band.
(3) There is no problem with the high-pitched sounds. Although some music songs do not have many high-pitched sounds (referring to the 10-20 kHz segment), there are obvious high-pitched sounds in jazz and rock music. Therefore, jazz CDs with good recording quality can be used. Come to test listening. In this type of CD record, there will always be some clear transient transitions that will appear again and again. When you listen, you should listen carefully to the feeling of dullness or the ambiguity that "fans" often say. In the low-pitched part, the plucked, orchestral and symphonic sound sources are mainly used for listening, and the sound is natural and soft, the rhythm is light, and the outline is clear. It is necessary to pay attention to whether the sound has a clear feeling of death and excessive viscous stagnation. This range has higher requirements for the listener and the sound source. If the speaker can meet the above requirements, we think it is better, and no more demanding requirements are made. In the super-high range, we use clear jazz and some special sound sources such as broken sound, cracking sound, and squeaking sound, mainly to investigate the transient expressive power of the speaker treble. In the repeated transient treble, see if the speaker is pronounced crisp, clean, harsh, with or without obvious distortion such as burrs, cracks, and rustling.
(4) Bass Because the human ear has a poor sense of bass, so the distortion can not be overestimated. We mainly look at whether the bass is thin or weak, whether it is empty or not - like a carton or a small wooden box. It is better to be calm, dignified and strong. At this point, the woofer has good material quality, large size, box weight, thick plate, and sealed speakers. Welcome to Home Theater Network
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