What are the purpose of sub woofers and amplifiers in cars?

Question

What are the purpose of sub woofers and amplifiers in cars?

Answer 1

to add bass to your music almost every type of music sounds better when a subwoofer is added and the amp gives it the power it needs because a subwoofer takes more juice then a regular speaker

Answer 2

Is this a serious question??

Answer 3

to make it LOUD man! what else! and to vibrate a vehicle apart and sounding good as you do it!!

Answer 4

whats the purpose? for the bass.. it makes it sound better;

the amplifiers power the subs