speaker cable question - OT - Standby

Discussion in 'Amps and Cabs' started by glman, Mar 26, 2008.

  1. glman

    glman Member

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    is it safe to unplug a speaker cable from an amp head from one speaker cab to another while the amp is on standby - I'm told that it's OK as long as standby is engaged but I need some expert opinions
     
  2. ?&!

    ?&! Member

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    I have heard conflicting theories on this, so just to be safe, I always power the head down completely before removing a speaker cable. I love my amp, so I'm not taking any chances! :)
     
  3. riffmeister

    riffmeister Gold Supporting Member

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    okay when the amp is on standby, not okay when the amp is off standby and in play mode.
     
  4. stuagu

    stuagu Member

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    dont do it... power off totally. atb
     
  5. justonwo

    justonwo Member

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    Of the amps I've owned and/or built, the only thing that's powered when you flip the power switch is the filaments, which means it's perfectly safe to unplug the speaker cable. Can't think of any special cases.
     
  6. riffmeister

    riffmeister Gold Supporting Member

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    to be on the safe side, take out all the fuses and unplug from the wall. :eek:
     
  7. justonwo

    justonwo Member

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    I usually wait until there's a blackout in my neighborhood before I switch speaker cables.
     
  8. zuel69

    zuel69 Supporting Member

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    :rollhahahah!


     
  9. VaughnC

    VaughnC Supporting Member

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    Yes...with a tube amp on standby, it is safe to change speakers. The main concern here is potential flyback voltage generated in the output transformer with no or too high of a load on the amp. However, for said flyback voltage to be generated in the output transformer, the amp has to: 1)not be on standby, and, 2)also have an input signal applied (or some sort of internal oscillation malfunction).
     
  10. bosstone

    bosstone Member

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    I switch cabs all the time in standby.
     
  11. quinnamps

    quinnamps Member

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    What he said. ALL the time. Never a problem.
     

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