How is the subwoofer made?
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A subwoofer is an acoustic system forreproduction of low-frequency sounds from 5 to 200 Hz. The development of this type of technology contributed to the improvement of modern electronic music and the use of sound-rich special effects in movies. From our article you will learn about how a subwoofer is made, consider the principle of its operation and application in everyday life.
The structure of the subwoofer
- Acoustic column;
- Generator nodes of low frequency;
- The amplifier of low-frequency signals;
- Power Supply.
At the moment, columns of this kind are producedin a wide range of 4 to 36 inches, so they can be used in both conventional apartments and cars. Low sounds in ordinary speakers are poorly localized, so they are output to a subwoofer that finds the right balance and contributes to high-quality stereo sound. Moreover, this speaker system has an original vibration, which "colors" the musical accompaniment. Subwoofers are divided into passive and active.
This low-frequency speaker is connectedtogether with all the stereo speakers to the power amplifier channel. Passive subwoofer, in addition to removing low-frequency sounds, eliminates unnecessary noise, "pressing on the ear" of a person, protects from unexpected failures in the sound or sudden frightening "cries". Nonlinear distortions will be absent completely.
This column has its own power amplifier,which completely removes the low-frequency sound load from the main speakers. The presence of an active crossover allows you to filter out high sounds and improves the consistency of the overall speaker system.
For an active subwoofer, you can useseparate end-to-end connection. These columns have many additional functions: adjustment of the frequency response, phase rotation, different position of the crossover cut points. Thus, it can be used on various sites with limited operating conditions of electronic equipment.