Сабвуфер. Как работает и как подключить?

A subwoofer, simpler - a low frequency speaker. Audiophiles do not favor this way of playing bass. In vain is a good thing. Typically, the subwoofer is used in home cinema systems, but with the help of a subwoofer you can significantly improve the acoustic capabilities of a conventional stereo system. Even without the fancy audiophile speakers. How to connect a subwoofer to a stereo system, what's inside, what inputs and controls it has. Which is better, active or passive subwoofers? These questions will be answered here. The film made not only for advanced audiophiles and fans of good music, but also for fans of bad music, as well as those who understand almost nothing in technology, but want to understand.
For any material damage, the author is not responsible.

For the very curious. In the background, in addition to the S-70 (Soviet motional feedback speakers), there is a pair of spherical acoustic systems:
Deluxe Acoustics DAT-200 - https://deluxeacoustics.eu/portfolio/twins-dat-200

Donate to the channel - https://www.patreon.com/ensemb

or here - http://www.donationalerts.ru/c/ensemb