Can you Help me look at this Diagram?

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by alanfc, Feb 20, 2004.


  1. alanfc

    alanfc Member

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    hi-

    can you help me with this? - I have a link here to the diagram of my old Marshall solid state, which I'm going to use now as a 2x12 cabinet, speakers only. This is the old 1980's Marshall model 5212 solid state.

    on the bottom right hand corner of the page is the speaker layout... I can't tell if it means 2x 8 ohm in parallel or series. I've been to some sites that show the differences between parallel and series, but they don't look like these connections..

    can someone take a quick look at this for me?

    thanks

    http://www.drtube.com/schematics/marshall/5210.gif
     
  2. dash_doc

    dash_doc Member

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    It's hard for me to read the marking on that schematic, but if you are refering to the two speakers below the "2X12" label in the lower right hand corner they are wired in parallel.
     
  3. Slick51

    Slick51 Colonel Curmudgeon Silver Supporting Member

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    Yep, two x 8 ohm wired in parallel, for a 4 ohm load.

    HTH
    Slick51
     
  4. alanfc

    alanfc Member

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    OK thank you-

    so an amp would see 4 Ohm?

    I'm worried now, because the Amp head I'm going to get will have 4 outputs, for :

    Parallel:
    0ne jack=1x 8 ohm speaker
    or
    two jacks= 2x 16 speakers

    Series:
    one jack=1x 16 ohm speaker
    two jacks 2x 8 ohm speakers

    so my amp only will see a 4 ohm load in my cabinet. Do I have any solution to this? (Doesn't look like it)

    thanks
     
  5. Slick51

    Slick51 Colonel Curmudgeon Silver Supporting Member

    Messages:
    505
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    Location:
    Northwest Corner of NC, 5 mi from MerleFest
    Wire the speakers in series

    diagrams for wiring

    and plug into the single 16 ohm output...you'll be fine.

    HTH
    Slick51
     
  6. alanfc

    alanfc Member

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    so then this would be using the output marked

    16 Ohm Serial

    1x 16 Ohm?

    based on the diagram I attached earlier, I'll have to disconnect wires from the speakers and run them a different way, right?

    thanks alot
     
  7. alanfc

    alanfc Member

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    oops

    I was typing as you were editing. I'll look at your attachment

    thanks alot
     
  8. Slick51

    Slick51 Colonel Curmudgeon Silver Supporting Member

    Messages:
    505
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    Location:
    Northwest Corner of NC, 5 mi from MerleFest
    look at the link I posted above.....

    Slick51
     
  9. Slick51

    Slick51 Colonel Curmudgeon Silver Supporting Member

    Messages:
    505
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    Location:
    Northwest Corner of NC, 5 mi from MerleFest
    no problemo....

    :dude

    Slick51
     
  10. alanfc

    alanfc Member

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    thank you
    makes perfect sense now
     

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