From: trevor@home.net   
      
   On 10/12/2014 11:21 PM, Mark Zacharias wrote:   
   > In my experience the manufacturers are simply trying to reduce the   
   > number of warranty repairs to some extent by specifying the higher   
   > resistance. In truth, with a bit of common sense applied at the volume   
   > control side of the equation, a four-ohm speaker will work just fine   
   > with any solid state amp or surround receiver of even minimal quality,   
   > such as Pioneer, Sony, Marantz, Denon, Kenwood, etc PROVIDED as I say,   
   > some common sense is used and the user isn't trying to use the thing as   
   > a sort of mini-PA system.   
   >   
   > Problem is, people connect all sorts of speakers, even for example car   
   > stereo speakers wired in unusual, often incompetent ways, then expect to   
   > be able to blast away for hours on end.   
   >   
   > Yamaha, for example, knows full well that one of their power   
   > transformers will not have a failed thermal fuse in the power   
   > transformer in the absence of customer abuse - playing the thing at a   
   > very high level, probably with low impedance speakers (or combinations   
   > of speakers) for an hour or two more or less continuous.   
   >   
   > Therefore, they will only cover ONE power transformer under warranty.   
   > The warranty servicer is expected to educate the customer that a second   
   > transformer won't be covered.   
   >   
   > In fact, the newest Yamaha's will "rat out" the user by recording how   
   > high the volume was for more than one minute and how many times. This   
   > info is accessible in the service menu.   
      
      
   Amazing isn't it that a manufacturer can incorporate watch dog   
   electronics in a receiver, but not simply a more sophisticated   
   protection circuit to prevent damage in the first place!   
   I'd be looking elsewhere if that's the case.   
      
   Trevor.   
      
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