The_Quiet_One 10+ year member
CarAudio.com Elite
Without going into exhaustive detail.....Im not just talking about the door speakers surviving, I mean how are they playing "music" will being shook to death from 8 15"s in a tunnel with 10,000 watts? But I kind of found the answer when I read how a speaker can reproduce a cymbal clash and a vocal at the same time. Even though I do not understand how a speaker can make two sounds while only being able to cycle at one frequency.
You've got to remember that a speaker has it's own motor producing vibration (music). Also think about the surface area of your car whereas a speaker has much less surface area and any ambient energy is much more evenly distributed than in a car. Eventually you do get loud enough to break stuff. At that point *shrug*
Fun experiment. If you got a decently motored junk speaker lying around see if you can stop it from playing music by placing pressure on it with your hand.