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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: Re: blowing woofers versus tweeters posted by Richard BassNut Greene on August 26, 2003 at 11:50:51:
You speculations are wrong.I don't appreciate the apparently very egotistical presumption on your part. Here is something that has happened right in front of my eyes, and others that I have associated with in audio as well.
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I have seen a 70 watt amp driving a 12" woofer clip very hard, causing the woofer to separate into two physically distinct pieces.It goes something like this. Some detail provided for general readership. The amp is providing a sine wave acting as a carrier, and the height of that wave equates to amplitude. The motor of the driver coorespondingly travels in and out - excursion. In this case, the amp had enough power to begin to recreate the blast of a canon in the 1812 Overture, however; having completed the introduction of a sharp amplitude and a quick excursion, the amp was then exhausted. There wasn't, for a moment, any power left to continue to provide electrical damping to return the driver along it's natural sine curve. The capacity for the driver to physically provide mechanical damping was not sufficient to prevent the launching of the driver on that excursion from continuing to the point of physically separating from the remainder of the driver assembly - leaving the cone forever floating - torn and separated from the rest of the assembly.
It is not necessary for the coil to be electrically overloaded for the above type of a blown woofer to occur. Some might say this is caused by bad driver design, or perhaps one might say that amp just got a really good start. The important note is this. The driver was not electrically overloaded.
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Follow Ups
- Re: blowing woofers mechanically - MarkgM 19:02:41 08/26/03 (1)
- Woofer overexcursion damage is rare -- besides the subject was tweeter damage - Richard BassNut Greene 08:33:43 08/27/03 (0)
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