How important is 6ch pre-out voltage?

Discussion in 'Archived Threads 2001-2004' started by Scott_AH, Oct 10, 2002.

  1. Scott_AH

    Scott_AH Stunt Coordinator

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    I'm looking at to different receivers--one with a 2.6 volt 6-channel pre-out and the other with a 1 volt 6 channel pre-out. What difference does this really make when connecting to an amp?

    Scott
     
  2. Yogi

    Yogi Screenwriter

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    It also matters what the output impedance of the preout is. If one preamp outputs 2.6V and has an output impedance of 20 Kohms then it is the same as a preamp that has an output of 1.3V and has an output impedance of 10 KOhms. So just the absolute numbers 2.6 and 1 V dont mean anything. Also you have to make sure that the output impedance of your preamp is atleast a third of the input impedance of your amp. That way you will ensure that your preamp has adequate juice to power your amp or in other words it ensures that your amp is sensitive enough to be driven by your preamp.

    Hope that makes sense.
     
  3. Scott_AH

    Scott_AH Stunt Coordinator

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    Well I checked both and the impedance of them is equal (both 1.2k). Would a higher voltage in this case be preferable? This isn't a real deciding factor in my purchase. I'm just curious.

    Scott
     
  4. Yogi

    Yogi Screenwriter

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