a simple ohm question? 2x8ohm cabs = ?load

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by rouss, Jan 29, 2012.

  1. rouss

    rouss Member

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    I have 2, 8 ohm cabs. I want to use a Y cable to plug an amp head into both of them . Is the load 16 ohm or 4 ohms, :huh
     
  2. Hwoltage

    Hwoltage Member

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    It should be 4 but you might want to measure it to make sure everything with the cable and cab plugs is good.
     
  3. mcdes

    mcdes Member of no importance

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    Hwoltage is correct. Should be four, but test first to make sure.
     
  4. Patrick620

    Patrick620 Member

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    I have not had my coffee yet but the gauge of wire in your y-splitter may be something to consider depending upon how many watts you might be pushing through it. Most of them I see are designed to split an input signal or for headphones. I'm sure they have some that are more heavy duty. Just a groggy thought.
     
  5. rouss

    rouss Member

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    thanks guys . Ill check it over
     
  6. guitarcapo

    guitarcapo Senior Member

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  7. alberob

    alberob Member

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    If they are in parallel it will be 4 ohms.[most likely].If they are in series they will be 16 ohms. No other possibles.:hiP
     
  8. VaughnC

    VaughnC Supporting Member

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    Yup, 4 ohms...a Y is typically wired for parallel.

    But, like previously stated, make sure the "Y" adapter cable is made with unshielded cable with the individual wires at least as heavy as typical lamp zip cord. You can see this if the Y's plug shells screw off. If the Y's plugs are molded it would be difficult to tell what type of wire is used on the inside...so, in that case, I wouldn't risk my amp with it.
     
  9. OrganicTimbre

    OrganicTimbre Member

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    Yep, I mostly see Y used for signal level, not speaker level. Make sure it's big and beefy like a speaker cable, otherwise it will get too hot.
     
  10. LarryN

    LarryN Member

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    16 gauge or thicker is good.
     
  11. soundchaser59

    soundchaser59 Silver Supporting Member

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    Best to have your local amp tech or sound & light shop make you a Y cable out of speaker wire and switchcraft hardware, 1 male and 2 female ends. Then just use regular speaker cables to connect the cabs.

    Series Y cables aka "triangle Y" are not common, you would have to go looking for one and chances are nobody you ask will have one. 99.99% chance your Y cable is parallel.
     
  12. Rockledge

    Rockledge Member

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    plug the speakers into the y cable and check the plug end of the cable with a meter. It should read roughly 3.2 ohms, give or take. somewhere between 2.9 and 4.
    I have never heard of a Y cable that was wired series, but you never know, if it is wired series you will likely get a reading of between 14 and 15.5 ohms.
     
  13. soundchaser59

    soundchaser59 Silver Supporting Member

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    There are a few out there, but they are very hard to find. I found a couple once last year, but I can't find them now. It's easier to find a box that switches between series and parallel. I went looking for the series cable a couple months ago, couldn't find it, and ended up making a box myself.
     
  14. Mrmarshallhead

    Mrmarshallhead Member

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    I've only ever seen Y cables for signal path, using screened cable - definitely not what you want to use for speaker duty.
     
  15. big mike

    big mike Plexi Loving Admin Staff Member

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    F that Y cable stuff. Dangerous.

    Put a bigger jack panel on one of the speaker cabs that will let you link out.
     
  16. TD_Madden

    TD_Madden Gold Supporting Member

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    I've got a speaker y-cable made by Reverend (bought when he did the amp closeouts).

    Very stout and works fine.
     
  17. VacuumVoodoo

    VacuumVoodoo Member

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    This thread made me realize that there is NO such thing as a simple question on TGP. :D
     
  18. Patrick620

    Patrick620 Member

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    Hell ya. There ya go.
     

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