Bass and treble on entertainment speakers refer to the audio range of the speakers.

　　The sound range of the playback sound of the audio system can generally be divided into eight sound ranges: super bass, bass, mid-bass, mid-range, mid-high, sub-high, treble, and extra high.

　　The bass audio range is between 30hz~150hz. The high frequency range is between 5000hz-20000hz. There are generally two knobs for bass adjustment and treble adjustment on the audio. Rotate the treble knob clockwise to increase, and counterclockwise to decrease. When the speaker reaches the manufacturer's standard after the sound, it is designed according to the "frequency response curve" that the public is used to.

　　After all, some people like to hear it louder, and some people like it a little thicker, so users can adjust it to their liking.

　　The tweeter unit is the sound restoration unit responsible for the high frequency part of the sound. Due to the high frequency, its diaphragm will be made very thin to adapt to the high frequency vibration frequency, so it is also a unit that is particularly easy to burn out. CM-8 speaker is a high-output multi-function built-in two-way frequency system specially designed for high-end club KTV. The sound image positioning is accurate, the music resolution is high, and the sound field performance is grand. The vocals are plump and sweet; the treble is crystal clear, delicate and penetrating.

　　The bass unit is responsible for the restoration of low frequencies, and the vibration amplitude of low frequencies is large and slow, so a thick paper cone and a restoration voice coil are used. The S-818 low frequency is a subwoofer that provides very high power for the low frequency sound reinforcement section. The whole body is made of high-density birch multi-layer plywood, molded steel hexagonal mesh surface, and affixed with acoustic sponge. It achieves a perfect effect for the low frequency vibration of the bass.

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