XPost: alt.audio.pro.live-sound, rec.audio.pro   
   From: digilyd@hotmail.com   
      
   Les Cargill wrote:   
      
   > When I read this, I think maybe the writer thinks that one   
   > 4 ohm version of the "same" speaker should act as if it   
   > were two 8 ohm versions in parallel.   
      
   I am the writer. My thought was that if efficiency in watts to produce   
   stated spl is the same then the 4 Ohm box should be louder because the same   
   voltage draws twice the current. With the amplifier being a Rotel dual mono   
   2 X 60 watts driven in the milliwatt range it gets difficult for me to see   
   what would cause current not to double when load impedance is halved.   
      
   > "It's 3dB louder" is only true when the amp driving them/it   
   > is current-constrained, and even then, it's messier than   
   > "add 3dB".   
      
   Yes, it is "all things equal" understanding I had, reading Dicks exellent   
   reply easily provides a couple of places where alterations involved to go   
   from 8 Ohms to 4 Ohms would cost a couple of dB, that price three times = 6   
   dB and a probable explanation to the effect that the loudspeaker "just is   
   like that in its 4 Ohm version" is provided.   
      
   Thanks guys!   
      
      Kind regards   
      
      Peter Larsen   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)