From: dpierce@cartchunk.org   
      
   Randy Yates wrote:   
   >> Yes. That high frequency square wave would dissipate maximum power   
   >> into any tweeter connected to it - even without any audio signal   
   >> present. It has to be suppressed.   
   >>   
   >   
   > Are you saying that a tweeter will have a significant mechanical   
   > response at some 2 MHz (e.g., the SSM2301)? Otherwise, the current   
   > and voltage will be 90 degrees out of phase and no power (or very   
   > little) will be dissipated.   
      
   No, it won't. It will be more like 45 degrees for quite some   
   way above 20 kHz.   
      
   Another issue is whether distributed capacitance can have an   
   effect at these frequencies. I'm not usre I have any better   
   an answer for that than anyone else, but my suspicion is the   
   effect is probably not significant.   
      
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