The Principle Of Subwoofer

Subwoofer is a bass speaker, which specializes in the sound with the longest sound wave. Because the sound wave it emits has the longest wavelength, it is very obvious to people, and the psychological feeling will be very warm, and people's other senses will also feel it, which is an exciting feeling. As far as the needs of audio program sources reflected by audio and home theater are concerned, bass exists in specific program sources and needs to be restored. With it, the restoration of the program source can be more cheerful and passionate, and the blood boils. Without it, it gives people a feeling of lack of enthusiasm and energy. For example, in a movie theater or in reality, the bass is hot, and we can feel the fiery passion when the plane takes off, but if our home theater is not equipped with a bass speaker or the configuration is unreasonable, we cannot feel this passion. To put it bluntly, it is a sound that can make your heart produce excitement, and your heart can beat wildly to the beat.
The internal power amplifier circuit divides the sound into several wavelength bands through a wave splitter. The medium and short wave bands (medium and high frequencies) are output to the satellite speakers, and the medium and long wave bands (medium and low frequencies) are output to the subwoofer. Generally, the subwoofer emits a long-wave sound of 20-200HZ, which is easy for people to hear. However, due to its long wavelength, it is difficult to distinguish the direction of the sound source. Such long-wave sound is transmitted through the bass reflex port and resonates with the satellite speaker box. The weak bass produced by the long-wave speaker and the satellite speaker box is combined, and the satellite speaker box will re-release the bass. As a result, the bass effect is very warm, and it makes people feel that it is coming from the satellite The sound emitted by the star speaker is the same as that emitted by the speaker box. At this point, you should have a basic understanding of the principles of the speaker. As for why ultra-long wave speakers and long-wave resonance speakers are used, you need to use physics knowledge to understand: satellites are weak bass, although they can be heard by people, but their waveform amplitude is very small, that is, the energy is not large enough. If long-wave technology is used, when the ultra-long wave generated by the speaker overlaps with it, due to passing through the bass reflex hole, their phases are consistent, then the ultra-long wave is loaded onto the waveform of the satellite bass. Since the speaker has very strong power, the energy increases sharply after loading, so that you feel very excited.