audio input problem

Discussion in 'General Electronics Chat' started by dcorwin822, May 31, 2009.

  1. dcorwin822

    Thread Starter New Member

    May 13, 2009
    2
    0
    hey everyone. I I'm trying to solve an issue I have. I have two audio sources i'm trying to input into one amp. there both line level output devices. I tried just splicing the r+/- and the l+/- wires together (4 wires per device) but the audio got very quite. Got any ideas?
     
  2. Externet

    AAC Fanatic!

    Nov 29, 2005
    761
    57
    That is not the preferred way to sum audio, but should work. Is that balanced audio signal ?
    Not sure of what you are doing, but put reverse gear and feed 'normally' only one pair of channels to confirm your source and amplification are still alive.

    Perhaps then, add the second pair wire by wire while listening.
     
  3. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    Have you ever heard of a summing op amp? Two would be required for stereo.
     
  4. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    Frequently summing audio signals just needs two resistors.
     
  5. hwy101

    Active Member

    May 23, 2009
    91
    28
    two resistors will work,or you can try two small caps as well
    you have to experiment with values until you get the desired level.
     
    Last edited: May 31, 2009
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