When unplugging anything from a direct box shows peaking

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This topic contains 12 replies, has 6 voices, and was last updated by Profile photo of Mike C Mike C 3 months, 2 weeks ago.

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  • #98459
    Profile photo of Jim
    Jim
    Participant

    When I unplug guitar from the direct box (channel muted) the mixer shows peaking signal. Is this normal? Is there someway the signal can be cut off so it isn’t showing a peak signal.

    #98461
    Profile photo of Mike C
    Mike C
    Participant

    Not so uncommon to get a pop when unplugging a cable from a DI and or the instrument.
    What DI are you using? Are you using a mono/TS cable?

    #98463
    Profile photo of SteffenR
    SteffenR
    Participant

    This is not the problem with the mixer, more the problem with the cable or the guitar
    that’s why Neutrik introduced “The Silent Plug”

    #98467
    Profile photo of Scott
    Scott
    Participant

    Muted or not, the mixer will always show input signal on a given channel if it is present. This is normal behavior.

    #98468
    Profile photo of Mike C
    Mike C
    Participant

    This is not the problem with the mixer, more the problem with the cable or the guitar
    that’s why Neutrik introduced “The Silent Plug”

    I made up a couple guitar cables with those to carry with to carry with me for the
    guitar players who either forget their guitar cables or the one did bring cuts in and
    out making noise all time.
    Silent Plug

    I could probably make some extra money at shows setting up a stand selling guitar strings, cables, picks, 9 volt batteries, guitar stands, guitar straps, tuners, drum sticks, drum heads, snare drums, cymbal stands, ect.

    That’s a short list of items that bands have forgotten to bring to shows I have provided sound for.

    #98469
    Profile photo of Jim
    Jim
    Participant

    The silent plug sounds interesting. It is just that on any other mixer when the channel is muted it doesn’t show signal when unplugging a guitar. I don’t know if it really matters because it only shows up on meters. It’s just that I have never seen that on any of my analog mixers with the muted on or the channel off. Thanks for your reply and would love to see more info on silent plug.

    Thanks, Jim

    #98470
    Profile photo of Mike C
    Mike C
    Participant

    The silent plug sounds interesting. It is just that on any other mixer when the channel is muted it doesn’t show signal when unplugging a guitar. I don’t know if it really matters because it only shows up on meters. It’s just that I have never seen that on any of my analog mixers with the muted on or the channel off. Thanks for your reply and would love to see more info on silent plug.

    Thanks, Jim

    The “silent plug” is normally used at the end that plugs into the instrument so when the cord is unplugged it shorts the cable so it’s not acting like antenna.
    The small ring around the edge slides to activate the internal switch.
    Cut one end off of a guitar cord and replace it with a silent plug. If you don’t solder
    it’s an easy job for someone who does.

    #98471
    Profile photo of volounteer
    volounteer
    Participant

    @Jim

    totally normal per elec101 if you did not turn the related power off first
    hopefully you had muted the channels on the SQ first

    #98472
    Profile photo of Mike C
    Mike C
    Participant

    totally normal per elec101 if you did not turn the related power off first
    hopefully you had muted the channels on the SQ first

    Nobody powers down a system to plug or unplug instruments, mics, DI’ ect.
    Pay attention to what’s happening on stage is part of sound system operation
    multi tasking though musicians can be quick and unplug something before you
    see their hand reaching for the cord.
    An all band input mute group is handy for set changes.

    I will say I have had quite a few that will give you a look and point to the cable
    to give you heads up that there going to unplug.

    #98473
    Profile photo of Jim
    Jim
    Participant

    I always have channel muted before unplugging a guitar or any high impedance input. It doesn’t make noise it just shows up as peak on mixer when plug is pulled out. Just wondering if it is hard on the mixer when it peaks like that? Would going to channel and using the pad help?
    Thanks, Jim

    #98474
    Profile photo of Mfk0815
    Mfk0815
    Participant

    You should always, ALWAYS!!!, mute the channel before you plug or unplug the connected device, whether it is a guitar, microphone, keyboard or anything else. But it should not harm the input circuit, at least I cannot remember any problem after doing that job for more than 40 years.

    #98475
    Profile photo of volounteer
    volounteer
    Participant

    @mikec

    Not power down the SQ but power down the device you are removing and mute the channel strips.

    I would not expect harm but I would expect to see what the OP noted on the meters.

    #98476
    Profile photo of Mike C
    Mike C
    Participant

    If an input channel needs or had phantom power that should be shut off before
    connecting or disconnecting any the XLR from the mixer or connected equipment
    and of course muting the channel.
    An active DI does not need the phantom power turned off to connect or disconnect
    the source plugged into the DI input.

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