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  • JAMMA from scratch

    Hey guys,

    i have been planning to build a JAMMA cab from scratch,
    (i know it will cost more to build, but its something i want to learn more about.)
    and i have a few questions for those in the know.

    i've been searching for days about the topic and have been all over the Bob Roberts site,
    but a few things are still beyond me, namely power and monitor setup.

    1- no site mentions JAMMA setups for 240v.
    Does that mean i need a stepdown transformer or a switching power supply?

    2- what voltage are monitors powered by??
    110v or 240v?

    3- some monitors need an isolation transformer.
    do i need one? where the hell do i get them?? i can only find huge enclosed ones. can you get stepdown isolated transformers??

    4- would a good setup be a 240 to 110v stepdown transformer into the bob roberts setup??

    5- do you need an AC line filter as per Bob Roberts and where do you get them??

    umm, i think thats it. sorry my questions are all over the shop.
    i'm sure i understand all the harness releated wiring.

    i just have been unable to find a decent source for the power and monitor wiring.
    esp with the 240/110 stepdown conversion.

    if anyone can help, much love with be due their way!!

  • #2
    Originally posted by spotlanx View Post
    1- no site mentions JAMMA setups for 240v.
    Does that mean i need a stepdown transformer or a switching power supply?
    That depends entirely on your monitor and power supply. Some are 240/110 switchable, some are 110 only.

    Originally posted by spotlanx View Post
    2- what voltage are monitors powered by??
    110v or 240v?
    Same as 1. Depends entirely on the chassis.

    Originally posted by spotlanx View Post
    i just have been unable to find a decent source for the power and monitor wiring.
    esp with the 240/110 stepdown conversion.
    Anything monitor related: ask Jomac. I'm sure he's got stepdown transformers for the 110v monitors/chassis he sells.
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    • #3
      Get isolation transformers and AC line filters as it will help alot to weed out any monitor interferance.

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