Car stereos with subwoofer output

Subwoofer output

— separate subwoofer output. The presence of such a speaker in the audio system ensures that the range of low and ultra-low frequencies is “overlapped” (for ordinary speakers this range is rather weakly expressed), which makes the sound powerful and rich. And the presence of a separate output allows you to connect an active subwoofer directly, without external equipment (however, for a passive subwoofer, you still need an amplifier).