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 the minimum number of components, which allows to achieve the most pure sound.
Due to the fact that subwoofers are used in modern stereo systems, the range of their sound is significantly expanded. However, in practice, the opposite phenomenon occurs when an improperly 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 verification itself, the quality of the components of the subwoofer, for example, its filter, is important. Often, they save on it. And it introduces extraneous noise and distortion into the signal.
In addition, the sound quality of such a subwoofer is low. Of course, you can buy high-quality, but it will cost quite expensive, and such models rarely appear on the free market. If you study the proposals on the market for music systems, then you are likely to find subwoofers with a bubbling bass. They are poorly suited for listening to high-quality music; rather, they are necessary for watching movies where you need to reproduce noise. However, most subwoofers are not suitable for reproducing the sound of various instruments. So, you can not distinguish the sound of a bass guitar from the sound of a trombone - it will be sound at the same frequency. For more or less normal sound, a subwoofer test is performed.
Studying subs in the market of music systems, you will probably come across the concepts of active and
passive subwoofer. How do they differ? The first type is an apparatus in which various filters and boards are already integrated to amplify the signal, as well as its distribution over multichannel systems. That is, having bought such a subwoofer, you can connect the necessary number of speakers to it. And the system is ready. This option has two undeniable advantages: it is cheaper than passive, as well as compact and convenient to use. The second option is closest to music lovers and people who make music professionally, for those who acutely hear the sound quality. This is a more flexible system, more expensive, in which the subwoofer is a separate speaker for reproducing low frequencies. However, for the system to work, it is necessary to use
phono stage amplifiers and other equipment.
But, in any case, it is necessary to conduct a quality test for the subwoofer. You can do this this way: on the Internet you can find special audio files that reproduce different frequencies. It is on them that the subwoofer is checked. But that's not all. For perfect sound, the subwoofer is pumped and it is done at a sufficiently high sound volume. Thus, the membrane does not stagnate in one position and does not lose the oscillation amplitude.
A correctly selected device, a quality check of the subwoofer and its adjustment - this is what will ensure the crystal clear sound of the music system as a whole.