"blown speakers"


When a speaker "blows" what actually happens. I suppose its different between a tweeter and woofer, but is there some mechanical damage or is it electrical. does something break? Besides a woofer cone ripping, what happens to a tweeter if it is still working, but raspy or staticy? I have heard "blown" speakers before, or ones that didnt work at all, but I really dont know what it is that breaks and whether it is fixable or just replace.
manitunc

Showing 5 responses by manitunc

Is there a way to test the speaker to see if there is a problem. The reason I ask is that in one of my speakers, when playing very loud, I heard a sudden rasping sound.When I reduced the volume, it sounded ok. It can still play quite loud without the rasping sound, but I dont really want to play it again as loud as it was to see if the sound comes back. IT was really loud, Pink Floyd Dark Side of Moon, Money. Quality amp of 275 watts, playing vinyl.
Timlub,
I suspect, after further investigation, that it is a problem with the crossover, as the mid and tweeter work fine, and no sound out of the 3 woofers on that speaker. I doubt that all three woofers would suffer mechanical damage and the same time. Any thoughts?
the crossover is not viewable or easily accessible. I will be taking it in to a dealer today to see if they have the tools to open it up. I cant imagine it would be a fuse that would not be accessible to the user. there is no sound at all from any of the three woofers in that speaker, but the midrange and treble work fine.
ok, got the verdict today. the crossover was broken in two and laying at the bottom of the speaker. Unlikely caused by overdriving. I also doubt it happened in shipping as the speakers were well packed in the factory boxes. I suspect the original owner dropped the speaker at some time, causing an impact enough to crack the crossover board and perhaps later vibrations finished the job. Anyway, it will be replaced and fixed.
This was an interesting voyage of investigating a problem that wasnt apparent on first examination. Easy to jump to conclusions on partial information.