Origin 20h Power Selector

Discussion in 'Marshall Amps' started by steveb63, Aug 25, 2018.

  1. steveb63

    steveb63 Well-Known Member

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    Thanks in advance for any help in this matter.

    New owner of the Origin 20 watt head.

    My question is, being that there's no standby am I safe to switch from low to high power on the fly?

    Or is it best to power down while selecting power level?

    Thanks again
    Steve
     
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  2. shooto

    shooto Well-Known Member

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    Just flip that amp off!
     
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  3. steveb63

    steveb63 Well-Known Member

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    Righton, thanks.

    That kinda felt right.

    Didn't want to do anything boneheaded
    Thanks again
    Steve
     
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  4. Mitchell Pearrow

    Mitchell Pearrow Well-Known Member

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    And from what the pamphlet (the owners manual says turn the master to O before powering up)
     
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  5. ampmadscientist

    ampmadscientist Well-Known Member

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    It's better to turn the master to zero before turning the power off. It's better to change power level with the power off.
     
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  6. steveb63

    steveb63 Well-Known Member

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    Thanks for the help, much apreciated.

    I couldn't find the answer on the power attenuation question in my owners manual.

    Thanks again HMP, and ampmadscientist
     
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  7. K2JLX

    K2JLX Well-Known Member

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    Some users have reported a pop or a thud on switch off also: mitigated by turning the master to 0.
     
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  8. ampmadscientist

    ampmadscientist Well-Known Member

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    It's kind of amusing that they left the standby switch out...
    It seems like originally, the standby was supposed to be on the front panel, then was changed to a hi / lo switch.
     
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  9. ampmadscientist

    ampmadscientist Well-Known Member

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    If the master volume is turned up high, there is a loud POP through the speaker.

    Hence, the master should be on zero when powering down to avoid the noise....and possibly damaging the speaker.
     
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  10. ampmadscientist

    ampmadscientist Well-Known Member

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    I couldn't find the answer on the power attenuation question in my owners manual.

    What power attenuation question?
     
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  11. steveb63

    steveb63 Well-Known Member

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    The high-med-low switch question.
    Sorry, used the wrong term.

    Thanks again, everyone, for so freely sharing your valuable information. Very interesting reading for sure.

    Steve
     
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  12. sjruvolo

    sjruvolo Member

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    I watched dozens or Marshall Origin videos and not once did I see any of the reviewers power off to change the H-M-L setting. I never heard a popping noise changing power settings. Turning the amp off may be another situation, Almost any amp with no standby switch will make a popping sound when powering off, hence the practice of turning down the volume .
     
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  13. Snowdogyyz

    Snowdogyyz Member

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    I hear nothing when switching from H-M-L on the amp. There is a pop if you turn it off in low or medium. I always turn it off in 50 watt mode- no pop or noise at all.
     
  14. Mitchell Pearrow

    Mitchell Pearrow Well-Known Member

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    I do know that with the 40c to change power levels it has to be in standby, so with no standby on the origin, I turn volume to 0 power off make the change power back on bring volume back to playing level!!
     
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  15. steveb63

    steveb63 Well-Known Member

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    Sounds like a plan.

    I was kinda flummoxed with no standby.

    Every tube amp I've ever played has had one, at least every amp I remember lol. The seventies and eighties were not kind to my memory.
     
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  16. Mitchell Pearrow

    Mitchell Pearrow Well-Known Member

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    This is my first tube Marshall with out a standby switch, a lot of controversy about them but I am used to them being on the amp! And I use it.
     
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  17. Jason Fieldhouseespk

    Jason Fieldhouseespk Well-Known Member

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    I don't get it, there's nothing wrong with not having a standby switch.... Guitar amps don't need them, they were an irrelevant addition that became a popular fad! And then people started thinking that they NEED them!

    The voltages in any guitar amp are simply not enough to damage anything by just switching it on and off, you will do absolutely no harm what so ever doing that, or flicking through the power settings, if you really can't stand the little pop that happens, it will probably be a capacitor, and can be easily fixed, but it's NOT damaging to your amp really....

    Don't stress guys, your fine, guitar amps are fool proof! :)
     
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  18. Jason Fieldhouseespk

    Jason Fieldhouseespk Well-Known Member

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    Guess what also... this may shock some, but..... THIS amp can even run through the DI out... wait for it... with NO SPEAKER!! :-O

    Turned on, with power going through it, a valve amp... no speakerage!!

    Take what ever you thought you knew about good valve amp practice and bin it guys, plug in and play...

    'Mazin! XD
     
    Last edited: Sep 3, 2018
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  19. Jason Fieldhouseespk

    Jason Fieldhouseespk Well-Known Member

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    You don't even need to bias the 20w even though they're EL34s...
     
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  20. Jason Fieldhouseespk

    Jason Fieldhouseespk Well-Known Member

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