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  1. #1
    Join Date
    Sep 2005
    Posts
    6,251

    Default Stupid line array wiring question


    I'm assuming that when you wire speakers in series they look like a line with the positive wired to the negative and then the negative wired to the positive etc.

    Groups in series where each one is connected to the others in parallel look like a ladder, right?

    At the bottom of the ladder are the connections to the amp: one positive, and one negative. The rungs are the groups of series wired speakers.

    Say that I need 2 four speaker groups. Each of these groups is wired in series. Then each of these groupshas to be wired together in parallel. Each of these 2 sets would be the rungs of the ladder.

    My stupid question is: is the last rung, one of the two sets of 4 speakers in series, or do the sides of the ladder continue and connect with a solid wire effectively joining the positive and negative wires in one more rung above the speakers which is a solid wire, or does it not really matter?

    Elvis




    (Originally posted by: Elvis)

  2. #2
    Join Date
    Aug 2006
    Location
    Columbia, MO
    Posts
    477

    Default Don't do that!


    > I'm assuming that when you wire speakers in
    > series they look like a line with the
    > positive wired to the negative and then the
    > negative wired to the positive etc.

    > Groups in series where each one is connected
    > to the others in parallel look like a
    > ladder, right?

    > At the bottom of the ladder are the
    > connections to the amp: one positive, and
    > one negative. The rungs are the groups of
    > series wired speakers.

    > Say that I need 2 four speaker groups. Each
    > of these groups is wired in series. Then
    > each of these groupshas to be wired together
    > in parallel. Each of these 2 sets would be
    > the rungs of the ladder.

    > My stupid question is: is the last rung, one
    > of the two sets of 4 speakers in series, or
    > do the sides of the ladder continue and
    > connect with a solid wire effectively
    > joining the positive and negative wires in
    > one more rung above the speakers which is a
    > solid wire, or does it not really matter?

    > Elvis

    If you continue up the ladder and short the two wires it will give 0 ohms for the hookup. Your amp will hate you for a few seconds before it blows up.


  3. #3
    Join Date
    Nov 2006
    Location
    leesburg va
    Posts
    173

    Default Re: Stupid line array wiring question


    > I'm assuming that when you wire speakers in
    > series they look like a line with the
    > positive wired to the negative and then the
    > negative wired to the positive etc.

    > Groups in series where each one is connected
    > to the others in parallel look like a
    > ladder, right?

    > At the bottom of the ladder are the
    > connections to the amp: one positive, and
    > one negative. The rungs are the groups of
    > series wired speakers.

    > Say that I need 2 four speaker groups. Each
    > of these groups is wired in series. Then
    > each of these groupshas to be wired together
    > in parallel. Each of these 2 sets would be
    > the rungs of the ladder.

    > My stupid question is: is the last rung, one
    > of the two sets of 4 speakers in series, or
    > do the sides of the ladder continue and
    > connect with a solid wire effectively
    > joining the positive and negative wires in
    > one more rung above the speakers which is a
    > solid wire, or does it not really matter?

    > Elvis
    whoa there you are correct about the series rungs in parallel to -/+ but if put the last rung as a solid wire = dead short eric

  4. #4
    Join Date
    Aug 2006
    Location
    Bar Harbor, ME
    Posts
    1,209

    Default Re: Stupid line array wiring question


    If I'm reading you right, you do not need to extend the ladder up over the top. The top most series group is fine as the top rung.

    Here's a tutorial that will show you what to do.

    While the example only has two groups of series that are connected in parallel, the principle is the same, and you could have any number in series which are then connected in parallel.

    And yes, an array speaker system looks like a ladder if you lay it out.

    here's the url:

    <A HREF="http://www.termpro.com/articles/spkrz.html">http://www.termpro.com/articles/spkrz.html</A>

    Marlboro



  5. #5
    Join Date
    Aug 2006
    Location
    Bar Harbor, ME
    Posts
    1,209

    Default Fuse will blow on a short!


    Because its a dead short, more than likely your amp will recognize that as a short ciruit, and the protection ciruitry will blow a fuse or trip a circuit breaker.

    Your much bigger problem is to have the ciruit sum out at 2 ohms or 1 ohm, and the circut breaker won't kick in, and as you require more and more power your amp will get realy hot really fast and blow out. At really low volumes you might even be fine because it won't exceed the power of the amp.

    So make the last rung be a bunch of speakers in series.

    > If you continue up the ladder and short the
    > two wires it will give 0 ohms for the
    > hookup. Your amp will hate you for a few
    > seconds before it blows up.


  6. #6
    Join Date
    Aug 2006
    Location
    Bar Harbor, ME
    Posts
    1,209

    Default Your amp on a heroin overdose *NM*




  7. #7
    Join Date
    Oct 2005
    Location
    Acworth, GA-or Metro Atlanta, GA
    Posts
    724

    Default Re: Stupid line array wiring question

    Provided Link: http://www.zalytron.com


    I must say that you scare me to death with your lack of knowledge of some of the basics of electronics. Please do plenty of reading before you jump into a project for your safety and your equipments good will.

    You can also go to this web site and under "KITS" look at their "line arrays". They have a wide selection of different speaker combination system wiring diagrams that also may help clarify some of your questions. I hope these wiring Diagrams will also give you a clearer picture of what you may be looking for. Please ask plenty of questions, electricity can be extremely dangerous, if your not sure about some thing, please feel free to ask here for your safety.

    J. Taylor

  8. #8
    Join Date
    Sep 2005
    Posts
    6,251

    Default That's exactly what I'm doing


    I haven't built any line arrays yet. So I'm doing the hypotheticals before I get started so I know what I don't know first.

    You don't have to be scared. I've not built them yet. I'm probably going to go the electronic crossover route too since designing a passive for this would just plain cost too much considering the high power through the speakers.

    I'm working on the long learning curve.
    Elvis


    (Originally posted by: Elvis)

  9. #9
    Join Date
    Sep 2005
    Posts
    6,251

    Default Thanks everyone for getting me straight on this


    It always helps to map out the whole thing before one gets started on a project. Then one knows what skills one has to learn about before the whole thing begins.

    I hate surprises and surprise parties.

    Elvis


    (Originally posted by: Elvis)

  10. #10
    Join Date
    Oct 2005
    Location
    McKinney, TX
    Posts
    1,869

    Default Re: Thanks everyone for getting me straight on thi


    Take a look at Darren's wiring in the project showcase on that TB line. That is a good example of different wiring congigurations. HTH

    Blair

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