Polarity question.

Discussion in 'Archived Threads 2001-2004' started by Michael_Victor, Mar 2, 2002.

  1. Michael_Victor

    Michael_Victor Stunt Coordinator

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    I have a question on polarity. It wasn't until after I ran the speaker wires in the ceiling that it didn't have a line indicating one wire from the other. I ran a THX test which are available on some DVDs and really can't find a bad sound, for example, when it tests for in-phase, it sounds how it should, and when its out of phase, it sounds bad. even if i switch the wires and test it again. not sure if this makes sense. does polarity really matter if all the speakers are seperate? i remember when polarity was a problem back in high school when i had a sub box with 2 subs, you can definately hear a difference. well, anyhelp is greatly appreciated.
     
  2. brucek

    brucek Second Unit

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    Michael,

    Yep, polarity does matter.

    I guess you realize that swapping the speaker leads on only one of the two speakers constitutes an out of phase condition. If you swap the leads on both, it will likely sound about the same when running the phase test.

    Most zip wire always has some sort of telltale indicator to show a difference between the two insulated wires of the cable. Sometimes its color of the wire itself, or color of the insulators, or a ridge of some sort on the insulator of one lead. It would be unusal if this were not so. Check that out.

    Either way, it would be very simple with a meter to determine which wire was which. Don't rely on your ears for this.

    brucek
     
  3. Michael_Victor

    Michael_Victor Stunt Coordinator

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    let me ask you this then, if you match up exactly from the receiver to the speakers red to red, and black to black. on all speakers, is there a possibility that i may be out of phase? or no chance...? thanks. where can i get such a meter?
     
  4. brucek

    brucek Second Unit

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    Michael,

     

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