SH Spotlight SH Forum members: Are your speakers in correct phase?

Discussion in 'Music Corner' started by Steve Hoffman, Oct 25, 2004.

  1. Mister Charlie

    Mister Charlie "Music Is The Doctor Of My Soul " - Doobie Bros.

    Location:
    Aromas, CA USA
    :laugh::laugh::laugh:

    Excellent! :)
     
  2. jorgeluiz

    jorgeluiz New Member

    but this is dangerous, he can mess the polarity of the cables and turn all out of phase.

    ....:idea: ...better is "upside down" the room and don't deal with cables.
     
  3. Metralla

    Metralla Joined Jan 13, 2002

    Location:
    San Jose, CA
    I don't remember writing that!
     
  4. Emberglow

    Emberglow Forum Resident

    Location:
    Waterford, Ireland
    I know this thread is as valid today as it was five years ago, but does the resurrection of a thread after such a long duration - does this set a new record on the forum?
     
  5. Jim T

    Jim T Forum Resident

    Location:
    Mars
    For all too many people music is just a tool for the removal of silence from their daily lives. In phase, out of phase is of little consequence to them.

    We would all like to think that at a Record Company this would NOT be the case, but we all know they are hard wired "out of phase" with audiophiles anyway. The only way to solve this is when someone like you, Steve, gets in the chain, which happens all to infrequently. This is why the reissue business is brisk business...for us anyway.
     
  6. Bronth

    Bronth Active Member

    Location:
    Riga, Latvia
    Steve, what's about my KRK active studio monitors? They are internally bi-amped and connected to MBox using balanced wires with predefined polarity (i.e. it couldn't be easily reversed). But the sound (stereo/mono) seems OK so I presume that they are wired inside correctly. Nevertheless, thank you for the reminder - I'll check my secondary passive speakers.

    A bit of semi-offtopic: are headphones (any, incl. cheap ones) always wired properly?
     
  7. Doug Sclar

    Doug Sclar Forum Legend

    Location:
    The OC
    If you have balanced inputs it's fairly easy to reverse them if you need a phase reversal.

    You can either take the XLR type connectors apart and rewire them or get inline phase reversers. These are simple barrel adapters with a male XLR on one end and and female XLR on the other end. Pin 2 on one connects to pin 3 of the other and visa versa.
     
  8. Bronth

    Bronth Active Member

    Location:
    Riga, Latvia
    Thanks, these adapters actually can help. But there still may be a chance that tweeters and woofers are incorrectly connected to their INDIVIDUAL internal amps which makes matters even more complicated...
     
  9. Scope J

    Scope J Senior Member

    Location:
    Michigan
    I just know about the
    red & white thingies .
    :hide:
     
  10. jorgeluiz

    jorgeluiz New Member

    but what if ....red and black?!? :confused:

    :laugh:

    ok, now serious.
    i did a stereo 44.1k/16b sine wave 440Hz with -6dB level where have only positives cicles .
    was done repeating 6 times with 1 second of silence between each wave.
    is cool for test as the speaker will move to the front only when the wires are in the right positions.
    if anyone is interested i can upload or you can do yourself easily with audition.

    cheers.
     
  11. Scope J

    Scope J Senior Member

    Location:
    Michigan
    Yes red & black .:whistle:
     
  12. bhazen

    bhazen Magical Mystery Tourist

    Location:
    Newcastle, WA
    True story: I was visiting a pal who had a sort of patched-together, thrift-store stereo. We were listening to some tunes, I wasn't diggin' the sound. Sure enough, I checked the speaker wires and the left speaker had + and - switched around. I fixed it at the speaker end, voila, better sound!

    A few weeks later I visited again, and there was that awful phasey sound again. I checked, and he'd re-wired the left speaker OOP again. "Why" cried I; quoth he, "I like the spacey stereo effect".
     
  13. jorgeluiz

    jorgeluiz New Member

    well, is his surround world, a "spacey" odissey.
     
  14. Expectant One

    Expectant One Well-Known Member

    I was checking just now, and I see that the arrows are pointing towards the amp instead, and it's been like that for over three years. So what you're saying is that I should just leave the cables alone? I just want to be absolutely sure here.
     
  15. AudioGirl

    AudioGirl Active Member

    Location:
    Los Angeles
    If your wire has arrows, point them to the speakers or whatever the "end of the line" is, so to speak.
     
  16. Expectant One

    Expectant One Well-Known Member

    It's just that I don't want to have to "break in" my cables again if the arrows don't matter. I've always thought my system sounds fine, anyhow.
     
  17. jorgeluiz

    jorgeluiz New Member

    have any scientific prooves about the correct direction of the "arrows" in wires?
     
  18. tootull

    tootull All elements agree

    Location:
    Canada
    http://www.av-outlet.com/en-us/dept_216.html

     
  19. jorgeluiz

    jorgeluiz New Member

    good link, very good.
    as old technician, i know about Diameter, equal lenghts for each speaker, capacitance, impedance, distances, D.C. resistance, quality of the material, inductance, resistence of the material but i still don't saw scientifics prooves about the directions as the wires are a sum of little wires together, i only read recommendations, the direction still unclear.

    i thanks you so much tootull :wave:
     
  20. Cornholio

    Cornholio Forum Resident

    Location:
    Cedar Rapids, Iowa
    For some reason I'm one of those people that can hear an out of phase system immediately. I don't even have to be in the same room to be able to hear it. I don't know how many systems I've corrected over the years, but it's been quite a few.
     
  21. TimB

    TimB Pop, Rock and Blues for me!

    Location:
    Galion, Ohio USA
    I am sure mine are! Every thing sounds fuzzy and low volume!

    Just kidding, I now what the out of phase sound is like. What is more of a concern for many is how your subwoofer will sound. If the sub is out of phase with the main speakers, the bass just gets sucked out. Be sure to physically change the speaker polarity, on both speakers and compare. You may surprised to find that the subs and main speakers are out of phase if hooked up with what one assumes to be the correct phase in both.
     
  22. gibtti

    gibtti Forum Resident

    Location:
    Glasgow, Scotland
    There are some LG LCD TVs over here which suffer from horrendous sound, and it turns out these are wired out of phase internally. Fortunately it's a fairly easy job to get them open and fix them.

    Of course if you have the NEW Past Master CD, 'Thank You Girl' is now in glorious stereo!

    Chris
     
  23. Expectant One

    Expectant One Well-Known Member

    Oh snap. I'm a bit confused now, really, as I've checked several forums, and most seem to think that the arrows thing is a marketing ploy or plain superstition, while others say they can't really hear the difference, and then we get a rare reply like yours. Perhaps I should switch my cables around so I don't have to think about it anymore.
     
  24. wavelength

    wavelength Forum Resident

    Pretty much describes my experience with this. I had 4 speakers that I had to "correct" the direction. Spent 2 hours fixing them. Do I notice any difference? Yes, maybe, I don't know. Am I happier? Definitely.
     
  25. Mike Ga

    Mike Ga Formerly meredrums and MikeG

    Location:
    Wylie, Tx.
    Just a quick add. I recall this little tip to imagine what happens to the sound of speakers that are out of phase.

    Try to make the "P" sound, but suck in instead of blowing out.

    Your speakers are doing the same thing on one side.
     

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