What makes your audio visual experice
Sub-woofersSub-woofer don't have to be huge or even be seen. They can be as shallow as 5" and be hidden in may places, yet still sound awesome.
Sub-wooferSpeakers are generally not placed in vehicles in an enclosure or an appropriate way to produce clean, loud, and the full range of low frequencies. So speakers generally don't do a good job of reproducing bass. That' where sub-woofer's come in, they are a key point of any quality sound system to complete any audio experience.