Can you blow your speaker?

I have a buddy that had to have the speaker in his Evo 4G changed cause it blew, or crackled and sounded like it was blown.

I know that isn't an answer, but I would think it possible from that.
 
I was just wondering if it's possible or likely to blow the speaker from a ringtone or anything?

If the ring tone has been modified to be louder than normal, I would say yes.

Most devices like this are designed so you cannot overdrive the speaker. The amplifier in the phone was designed to work with the speaker in the phone. It's when you go and modify things you can cause damage.

More likely something can get caught between the speaker and the case impeding its ability to move. If it is there long enough, you can damage the cone or surround.
 
The geico ringydee ding dong ringtone blew my blackberry tour speaker. So id say it probably is possible.

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