Bill Fitzmaurice wrote:
His analysis is a bit off the mark. The reason tweeters blow when woofers usually don't is that clipping increases the high frequency power density beyond normal. With a clean signal power density decreases by 3dB with each octave increase in frequency. A tweeter in a 100w system normally will receive 10w or less, so that's all that the voice coil is designed to handle. When clipping causes the high frequency power density to go well above normal that 10w tweeter can receive 20w or more, and that will toast the voice coil. The increase in power density won't bother the 100w woofer, because the maximum level still can't exceed what the amp power rails will allow. If clipping bothered woofers guitar players would have to swap them out nightly, if not between sets.
High levels of compression can make the situation worse, and increase the chances of damaging woofers via long term heat build up. It also will make the sound really bad, as will clipping. There's a simple rule to follow if you don't want to blow drivers: if it sounds bad turn it down.
Bill I took the liberty of sending your quote to Rod.
Here is his reply.
Since Bill seems to have glanced at the intro and decided I'm wrong, I have no interest in him or his business.
My tweeter article is the most comprehensive anywhere on the net, but he dismisses it as "off the mark" despite the fact that he's largely wrong.
He simply mindlessly regurgitates the same old explanation that everyone else uses.
If he bothered to read the article, he'd see that I do account for the harmonics (and in far greater detail than anywhere else).
Where is his detailed explanation of the problem? Oh, he hasn't got one, and is only interested in selling speaker plans.
His 'analysis' of guitar player's speakers is utter drivel. A guitar amp that used 100W of speakers for a 100W amp will kill speakers - the speakers should be rated for double the amp power for transistor amps, and about 1.6 times for valve amps.