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Conecting more speakers

Discussion in 'Home Cinema Speakers' started by EN, Apr 29, 2005.

  1. EN

    EN
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    I simple question,
    I haven't seen anyone to connect speakers in series. Why not?
    Is it an inpendance issue or something else?

    Thanx
     
  2. bob1

    bob1
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    I used to have some speakers in series which made them 12 ohm if i was to put them in parallel that would have made them 3ohm ,not a good load for the amp.
     
  3. EN

    EN
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    Thanx Bob,
    is this connection in series having influence on the quality of sound?
     
  4. alexs2

    alexs2
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    It's going to become an impedance issue whether you wire multiple speakers in series or parallel,but from different angles.....

    By wiring in series,you raise the impedance by multiples of the original's impedance,assuming the others are the same i.e.3x8 ohm speakers will have an impedance of 24 ohms etc.
    The result of that is that the amplifier's output will drop from e.g 100W into 8 ohms,to maybe 40 w or thereabouts.

    If you wire multiple speakers in parallel,the impedance drops...i.e. 2x8 ohm speakers in parallel offers a 4 ohm load to your amp and so on.
    Most amps will manage a 4 ohm load ,but few will run 2 ohms happily,and fewer still will run 1 ohm loads.

    The end result is that series wiring can work,but will significantly drop the maximum loudness from each individual unit,and maybe the entire array overall will have a lower SPL than one 8ohm speaker driven correctly by an amp designed for an 8 ohm load.
     
  5. EN

    EN
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    Thanks Alexs2.
    If a SPL is not a problem, any quality losses?
     
  6. alexs2

    alexs2
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    Not really,other than a rather diffuse sound field,but if that's what you were after,it would work.
    Remembering that applies to series use.
     
  7. bob1

    bob1
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    I don't use the 2 speakers now but i didn't have much influence on the sound quality of the speakers,it was for the rearbacks to spred the sound out a bit (which it did) i now use a single centre speaker and that sounds better.I wouldn't get too carried away with connecting extra speakers up because you just don't know what effect it my have on the amp.
     

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