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   rec.audio.tubes      Tube-based amplifiers... that go to 11      52,877 messages   

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   Message 50,917 of 52,877   
   Alexander Dyszewski to All   
   amplifier input sensitivity   
   20 Apr 10 15:52:32   
   
   From: alexander.dyszewski@chello.at   
      
   Hello,   
      
   where is the point in making the input sensitivity of a modern amplifier   
   as low as 250mv ?   
   Lets assume the amplifier needs 0,775Vrms (=0dBu) for full output and   
   most digital sources tend to produce about 2Vrms leaving a 8dB margin   
   for quieter recordings. I found a Marantz Fmtuner with 1Vrms Output and   
   i think other tuners will bei similar. This will give only about 2dB   
   margin, but since most fm broadcasts are modulated noise anyway there   
   should be no problem in achieving full volume. High quality reel-reel   
   tapedecks will have balanced XLR connectors giving +4dBu which equals to   
   1,2Vrms. So again no reason for low input sensitivity. Riaastages might   
   be different, but i think that a high quality preamplifier should be   
   able to deliver 0dBu even with strangely mastered records.   
      
   Can anybody here think of any (high quality) source that will actually   
   need such high sensivity ?   
      
   sincerly,   
   Alexander Dyszewski   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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