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Can An Amp Head Be Hooked Up To Any Extension Cabinet?

Discussion in 'DIY Amp Forum' started by Hendrixstrat106, Mar 22, 2017.

  1. Hendrixstrat106

    Hendrixstrat106 Strat-Talk Member

    84
    Apr 4, 2015
    Champaign Illinois
    I'm looking at a Bugera 1960 Infinium 150W Classic Hi-Gain Tube Amp Head
    And was wondering if I could hook it up to another brand cabinet, probably a Marshall MG Series MG412CF 4x12 Guitar Speaker Cabinet. Could I?
     
    Tube ToneChaser likes this.

  2. circles

    circles Senior Stratmaster

    I think ohms is the big thing to worry about, not maker. But I dunno.
     
    rolandson likes this.

  3. rolandson

    rolandson Senior Stratmaster

    Jul 13, 2015
    Cascadia
    Yes, and as @circles points out, matching impedance can be rather important. Some amps are forgiving, others not so much. Some offer the ability to select impedance to match your cabinet, others will want you to select a cabinet that matches the amps rating...
    or
    wire the speakers within the cabinet to do the same thing. Which isn't difficult.
     
    JustABluesGuy likes this.

  4. Hendrixstrat106

    Hendrixstrat106 Strat-Talk Member

    84
    Apr 4, 2015
    Champaign Illinois
    The head is 4 ohms and the cab is 8 ohms
     

  5. vid1900

    vid1900 Senior Stratmaster

    Nov 25, 2016
    USA
    See the switch on the back of the head that says "IMPEDANCE" ?

    That needs to be set to the same Ohms as the speaker cab.

    If no one has opened up that Marshall cab, it came from the factory at 8 ohms.
     
    rolandson likes this.

  6. rolandson

    rolandson Senior Stratmaster

    Jul 13, 2015
    Cascadia
    Then rewire your cabinet to a 4 ohm load.
    Wait...it has selective impedance? Then just set it to match whatever the cabinet is.:cool:
     

  7. GaryCorby

    GaryCorby Strat-O-Master

    856
    Apr 11, 2012
    Sydney
    You're obviously not a bass player. They obsess about this. Brand of cab doesn't matter, but as everyone said the ohms from the amp needs to match the ohms of the cabs. If you have multiple cabs in parallel (like if your head has two cab sockets) then this would be a good time to learn Ohm's Law.
     
    jimyjazz likes this.

  8. Hairy Bear

    Hairy Bear Strat Fumbler Strat-Talk Supporter

    Age:
    64
    262
    Nov 30, 2010
    The stolen land of the Iceni
    Any make of cab with a suitable power rating will work, they all sound slightly different due to the characteristics of the speakers ie a cab full Celestions will sound rather different to one loaded with Jensen or Eminence, also open or closed back affects the sound. You may have to try various makes to get the tone you're looking for. Just watch out for impedance matching: there is a slider switch on the back of the head.
     

  9. Hendrixstrat106

    Hendrixstrat106 Strat-Talk Member

    84
    Apr 4, 2015
    Champaign Illinois
    I really never studied ohms law before. The impendence switch says: 16q 8q 4q
     

  10. Artunes

    Artunes Strat-Talker

    Age:
    61
    111
    Mar 16, 2017
    Oshkosh B'Gosh
    Those aren't 'q's. That is the ancient greek letter, Omega. In this day and age, it is used as the electrical symbol of ohms. If your cabinet is 8 ohms, then set the switch on the back of the amp to 8 ohms.
     

  11. Hendrixstrat106

    Hendrixstrat106 Strat-Talk Member

    84
    Apr 4, 2015
    Champaign Illinois
    Cool! I'm a dumb@$$ lol
     
    rolandson likes this.

  12. Tube ToneChaser

    Tube ToneChaser Strat-O-Master

    Age:
    55
    604
    Mar 30, 2017
    South Carolina; USA
    Ohm's Law is the deal! It's what matters MOST. I agree with ALL the replies about Impedance Matching. Damage to your Amps and/or Speakers WILL result if have it mismatched. Best of luck!
     

  13. Hendrixstrat106

    Hendrixstrat106 Strat-Talk Member

    84
    Apr 4, 2015
    Champaign Illinois
    On this subject, are Marshall MG series cabinets any good? I heard mixed reviews on it. I was hoping to use one with a jet city head.
     

  14. moullineaux

    moullineaux Strat-O-Master

    822
    Jul 11, 2009
    ATLANTA, GA
    Agree with Ohms law, match em up
     

  15. DougMen

    DougMen Strat-Talker

    177
    Jun 6, 2017
    Honolulu, HI
    MGs are Marshall's cheapest cabs, but if you like how it sounds, then that's all that matters. I would also look at the power rating of the cab. If the amp puts out more than the cab can handle, you could blow the speakers if you crank the amp up too much.
     
    stratman in va likes this.