When car speakers break, it is often said that they are broken. This is usually characterized by a sudden and drastic reduction in sound quality, and it is usually caused by some kind of mechanical or thermal defect in the speaker that prevents it from working as it should.
8 Reasons Why Car Speakers Blow Out | Tips and Tricks to Prevent Speakers from Blowing Out
Mechanical speaker failures usually occur when the cone in a speaker is moved beyond its design. Thermal failures occur when a speaker is subjected to too much force and delicate internal components melt or burn.
In most cases, car speakers blow out due to accidents or carelessness, such as turning the volume up too high and leaving it on for too long. However, it is possible for car speakers to blow out due to age, and speakers made of inferior materials are more likely to blow out with normal use as they age.
If someone says a speaker has blown, they have had a catastrophic failure. The speaker may not work at all, or it may sound terrible.