need help wiring sub

Discussion in 'Mustang Sound & Shine All' started by Mustangless, Aug 18, 2005.

  1. Mustangless New Member

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    I have a RF 451s which is 4ohms stable. I also have to audiobahn 12s that are dvc 4ohms. Right now I only have 1 and its wired like the bottom picutre
    [IMG]

    what will be the effects of having a 4ohm sub wired like a 2ohm sub? Or is that picture 4 ohms? I think its 4ohms but am I getting all the power out of my amp at 4ohms or is the amp 8ohms?

    Ok, the sub is Impedance: dual 4 ohms. I have it wired like that bottom picture which is 2ohms, I think. Is that bad?
  2. iskwezm Well-Known Member

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    If your amp is ONLY 4 ohm stable,thats weak,almost all of the amps nowadays are 2 ohm stable at least.If you run you amp at 2 ohm its will get put out more power but get hot faster and might burn up.

    I have a X-File 2000 watt D class(my old company) that i wired to 1/2 ohm on my buddies truck with 4 L7 12's,it hasnt shut off yet,byut that doesnt mean that it wont sooner or later

    ok i just checked your amps specs
    115 W X 2 @ 4 Ohms RMS

    225 W X 2 @ 2 Ohms RMS

    450 W X 1 @ 4 Ohms Bridged RMS

    so what your gonna do is wire each speaker's voice coil in series so its a 8ohm load and then wire them both in parallel so you get a 4 ohm mono load
  3. Mustangless New Member

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    Do I need to wire it like this
    [IMG]

    If I wire it like that then I am getting 450rms, right?

    I am getting confused so I will try to draw a picture
    This is the sub

    -- ++
    ooooo
    ooooooo
    oooooo
    -- ++

    Do I run a wire from the top left - to the bottom right +. Then I run a wire from the amp to top right + and to the bottom left -. Then I bridge the amp.?

    I have it wired like http://www.audiobahn.com/tech/wiring/Series_Series_dual_4_ohm.pdf top picture. My amp says 450rms at 4ohms. Am I getting half of 450 at 8ohms?


    I know I probably sound dumb but i probably am.

    I tried drawing a picture
    [IMG]

    also, does it matter if the wire is in the inside and outside holes? Like there are 2+ and 2- on one side. If I had a + on the inside wired to a - on the outside. Will that matter?
  4. iskwezm Well-Known Member

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    yes,wire it like the first pic to get a 8 ohm load,then wire both woofers together to get 4 ohms briged,so your amp will have 1 +- going to both speakers.
    If your amp sees a 8 ohm load,you will not get 450 watts

    Do not rin the wires inside the speaker basket,the excursion of the woofer will vibrate on the wires.

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