Dipole vs Bipole

Discussion in 'Home Cinema Speakers' started by daren jackson, Jan 21, 2002.

  1. daren jackson

    daren jackson
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    Sorry if this has been covered before - but what is the difference between bipole and dipole speakers.

    Which would be better for the following senario:

    7.1 sound, rear sofa against room, room approx 12 x 12. Speakers will need to be placed near ceiling height.

    Where would the best placing for the rears/surrounds - two either side of the sofa & two behind (each speaker about 2 foot from the corner)?
     
  2. Confucius

    Confucius
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    Di-poles fire out of phase (one set of drivers push when the other is pulling), Bi-poles fire in phase (drivers push at the same time).

    Which sounds best?

    Gotta try 'em and see!
     
  3. Reiner

    Reiner
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    Due to the out of phase design dipoles might lack some bass while bipoles work in phase but therefore give less "wrap-around" effect.

    Think you mean "sofa against rear wall"!? Not a good start for a 7.1 system, if the surround back speakers are too close and / or two high you might loose the benefit from 7.1
    As well if they are too high they might just 'shout' above you.
     
  4. uncle eric

    uncle eric
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    The other unfortunate thing is that listening positions whereby the chair or sofa is against a back wall will give you a very boomy and uneven sound. Cup your hands and place behind your ears. Now listen to anything you like, even the TV.
    I also notice that your room is exactly square. This is in fact one of the worst shapes you can have for a listening room. If your listening position and speakers are all central and equidistant, in other words if your centre speaker is in the middle of one of the room sides with the L/R fronts equally apart with you slap bang oppossite of the centre, you should move everything over (left or right) by at least 6 to 12 inches.
    You can move the rears but of course you will be a little closer to one of the sides.
    Take your sound meter (set to slow and C weighting) and adjust the amp delay for the uneven sides in order that they are at the same level (at the listening position). If fact, reset everything at 75db reference level from the said listening position. Without boring you to death with the reasons, your sound quality will improve many fold.

    Eric
     

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