whats line level voltage?

Discussion in 'General Electronics Chat' started by kimoni, Jan 17, 2005.

  1. kimoni

    Thread Starter New Member

    Dec 3, 2004
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    Hello
    When dealing specifically with audio, is there a standard RMS voltage level that all systems use for line level inputs/outputs?

    thanks to anyone who knows!
     
  2. pebe

    AAC Fanatic!

    Oct 11, 2004
    628
    3
    From somewhere in the back of my mind comes the standard of 0dB=1mW into 600ohms, and that's .77vRMS

    But I don't think many manufacturers stick to it - certainly not for Japanese domestic audio equipment.
     
  3. mozikluv

    AAC Fanatic!

    Jan 22, 2004
    1,437
    1
    hi

    "pebe" is right about the standards for line level I/O. but that is not strictly followed when it comes to audio purposes. :)
     
  4. n9xv

    Senior Member

    Jan 18, 2005
    329
    1
    Standard "line-level" input/output voltage in the audio field is generally understood to be 300mV (RMS) unless specified otherwise.

    Hope that helps,

    n9xv
     
  5. pebe

    AAC Fanatic!

    Oct 11, 2004
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  6. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
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    Hi,

    No doubt about the lack of standards. 1.25 volts was my understanding of audio line level, but I can't recall the source.
     
  7. kimoni

    Thread Starter New Member

    Dec 3, 2004
    6
    0
    ok thanks everyone
     
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