The subwoofer is designed to reproduce low frequencies. This role is assigned to him in home music systems. In most cases, home music systems have stereo outputs. Thanks to this organization, the signal passes a minimum number of components, which allows you to achieve the most pure sound.
Due to the fact that modern subwoofers are used in modern stereos, the range of their sound is greatly expanded. However, in practice, the opposite phenomenon occurs, when an incorrectly tuned sub gives a strong distortion of the sound of the entire system. Therefore, the correct verification of the subwoofer is so important. In addition to the check itself, the quality of the components of the sub, for example, its filter, is important. Often, it is saved. And it brings in the signal extraneous noise and distortion.
In addition, the very sound quality of such a sub is low. Of course, you can buy high-quality, but it will be quite expensive, and in the free sale of such models are rare. If you study the proposals on the market of music systems, then you will most likely find subwoofers with a droning bass. They are not suitable for listening to high-quality music, rather, they are necessary for watching movies where it is necessary to reproduce noise. However, to reproduce the sound of various instruments, most of the sabs are not suitable. So, the sound of the bass guitar does not differ from the sound of the trombone - it will sound at one frequency. For more or less normal sound, the subwoofer is tested.
Studying the submarines on the market of music systems, you will surely come across the concepts of active and passive subwoofer. What are they different? The first type is the device, in which various filters and boards are built in to amplify the signal, as well as its distribution over multi-channel systems. That is, by purchasing such a subwoofer, you can connect to it the required number of speakers. And the system is ready. This option has two indisputable advantages: it is cheaper than passive, and also compact and easy to use. The second option is closest to music lovers and people engaged in music professionally, for those who are keenly hearing the sound quality. This is a more flexible system, more expensive, in which the subwoofer is a separate column for the reproduction of low frequencies. However, in order for the system to work, phono-correctors, amplifiers and other equipment must be used.
But, in any case, it is necessary to conduct a qualitative test for the subwoofer. You can do it this way: on the Internet you can find special audio files that reproduce different frequencies. It is for them to check the subwoofer. But that is not all. For ideal sounding, the subwoofer is pumped and made at a sufficiently high volume of sound. Thus, the membrane does not stagnate in one position and does not lose the amplitude of the oscillation.
Correctly selected device, a qualitatively conducted check of the subwoofer and its tuning - that's what will ensure the crystal clear sound of the music system as a whole.