View Full Version : ??Question??
10-12-2001, 12:03 AM
This might seem like a dumb question, but at this point no one has been able to give me a straight answer. So maybe someone on here could help me out:
What exactly happens when a speakers blows? I know that basically its wire wrapped voice coil that sits in the magnet. Any help would be appreciated.
Usually the voice coil is heated up to a point that the coil expands
in the magnetic gap of the motor assembly and when it cools it does not return to its original diameter. This is when you hear the speaker buzzing or rubbing. The other way a speaker blows, is when the voice coil wire simply can not withstand the excessive current going through the smaller gauge wire that make up
the voice coil. The wire fails leaving a open circuit. This is caused by overdriving a speaker with a insufficient power amplifier. Most people assume that you can't blow a speaker by driving it by a smaller amp. But this is not the case. More damage is done by smaller amplifiers trying to be played at louder listening levels because they are easier to "clip" and distort
due to their lack of headroom and insufficient power supplies.
Think of driving your car at 60 miles per hour in first gear. It will only last so long before a problem will arise.
Hope this helps.
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