Very tired topic but still confused

Discussion in 'Amps and Cabs' started by Glass Onion, Jan 20, 2015.

  1. Glass Onion

    Glass Onion Toneful truth seeker. Gold Supporting Member

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    Two 4x12 cabs. Speaker cabel out of each output from the amp (100 watt Ceriatone)

    Do I set it for 16 or 8 ohms.
     
  2. iggs

    iggs Member

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    What are the cab impedances?
     
  3. Blix

    Blix Supporting Member

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    If your cabs are 16ohm, set amp to 8.
    If your cabs are 8ohm, set amp to 4.
     
  4. Glass Onion

    Glass Onion Toneful truth seeker. Gold Supporting Member

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    Both cabs are 16 ohms.
     
  5. iggs

    iggs Member

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    Set amp at 8 ohms.
     
  6. IM4Tone

    IM4Tone Member

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    :aok Exactly!
     
  7. Ilduce

    Ilduce And now for something completely different! Supporting Member

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    :agree
     
  8. alvagoldbook

    alvagoldbook Member

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    It depends. If you hook up your cabinets in parallel (each speaker chord goes to two different jacks on the amp) then your plug 2 16 ohm cabs into your 8 ohm amp.

    If your cabinets are in series (amp---->cabinet---->cabinet) then you'd need to plug two 8 ohm cabinets to your 16ohm amp.
     
  9. 8len8

    8len8 Member

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    I've never heard of 2 external cabs connected in series.
     
  10. iggs

    iggs Member

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    Me neither ... it's still a parallel connection if the cab has a separate parallel "output" for speaker link.
     
  11. IM4Tone

    IM4Tone Member

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    Although uncommon, I do own one cabinet which has 2 output jacks for 'daisy-chaining; one parallel, the other series. I've also made a 'series box for running two cabinets in series....did this to accommodate an amp which had a 16 ohm and an 8 ohm jack but not a 4 ohm. This allowed me to connect two 8 ohm cabs to the amp's 16 ohm jack for a proper impedance match.
     
  12. alvagoldbook

    alvagoldbook Member

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    This was more common on some old fender cabinets. They had an input jack and output jack. You don't see it much anymore.
     
  13. IM4Tone

    IM4Tone Member

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    Quite a few cabinets have both an input and an output jack (for a parallel connection to another cab.). What I'm referring to is a cab. with an input jack and two output jacks....one for a parallel connection and one for a series connection.
     

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