Subwoofers with passive acoustic connection

Passive acoustics connection

— the ability to use an active subwoofer as an external amplifier for a passive speaker system. To do this, the design provides for the appropriate outputs (high-level or Speakon), and the subwoofer receives an audio signal in the entire frequency range and, using the built-in crossover, separates it, feeding the bass to its own speaker, and the rest of the frequency spectrum to the speaker outputs. This allows you to use a passive speaker without a separate power amplifier.