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  1. #1
    Les Paul Forum Member Cliff Gress's Avatar
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    230v 50Hz Marshall amp ok to use in US?

    My JTM1C says 120v 60Hz. Will I need a step down converter or perhaps some sort of adapter to use a 230V 50 Hz Marshall here in Michigan?

    Thanks gents and Happy Easter.

  2. #2

    Re: 230v 50Hz Marshall amp ok to use in US?

    Quote Originally Posted by Cliff Gress View Post
    My JTM1C says 120v 60Hz. Will I need a step down converter or perhaps some sort of adapter to use a 230V 50 Hz Marshall here in Michigan?

    Thanks gents and Happy Easter.
    Yes. But first check if there is a "Mains" switch on the back of the amp to change to 110V (or 120V) 60Hz. If so, set to 110/120V and you are good.

    What model is it? Pics?

  3. #3
    Les Paul Forum Member TM1's Avatar
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    Re: 230v 50Hz Marshall amp ok to use in US?

    You should be fine if you have the Mains selector on 110/120v or use a step down tranny. Those Mains tranny are just usually the same but wired differently internally.

  4. #4
    Les Paul Forum Member Cliff Gress's Avatar
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    Re: 230v 50Hz Marshall amp ok to use in US?

    Thanks gents

  5. #5

    Re: 230v 50Hz Marshall amp ok to use in US?

    set the Mains selector on 110/120v
    slitherio online

  6. #6
    Les Paul Forum Member )2azer's Avatar
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    Re: 230v 50Hz Marshall amp ok to use in US?

    Quote Originally Posted by Cliff Gress View Post
    My JTM1C says 120v 60Hz. Will I need a step down converter or perhaps some sort of adapter to use a 230V 50 Hz Marshall here in Michigan?

    Thanks gents and Happy Easter.
    Look on the back of it man it tells you. On that model you have to change the fuse.

  7. #7
    Les Paul Forum Member TM1's Avatar
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    Re: 230v 50Hz Marshall amp ok to use in US?

    The Mains transformer in that amp was made to work on 120v & 220-240v. It just has to be configured(wired) inside on the tranny. There's not an external switch for selecting voltage on this model. But the schematic shows it being able to be wired in either 120v to 240v. The 120v side uses 1/2 the tranny & the 220(up to 250v) uses all of it.

  8. #8
    Les Paul Forum Member Cliff Gress's Avatar
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    Re: 230v 50Hz Marshall amp ok to use in US?

    Thanks all. It got sold.

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