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94 Views 4 Replies Latest reply: Mar 1, 2013 11:26 PM by tin-soldier RSS
tin-soldier Just Startin'
tin-soldier
12 posts since
Nov 15, 2011
Currently Being Moderated

Mar 1, 2013 3:00 PM

DT25/DT50 foot switch

I have both DT25 head/cab and DT50 combo, HD500, JTV 59 and JTV 69. Having used this setup for a while I decided to dispense with the HD500 and use a regular pedalboard for a while. I've got a Marshall two button foot switch with led"s and while the led is fine for the channel switching on the DT25, the reverb only works with the led off for some reason. I appreciate that the DT50 only supports channel switching but I don't understand the problem with the reverb button led when using it with the DT25.  Anybody have an explanation?

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  • spaceatl Expert Line 6 User
    spaceatl
    4,456 posts since
    Jan 24, 2007
    Currently Being Moderated
    Mar 1, 2013 3:18 PM (in response to tin-soldier)
    Re: DT25/DT50 foot switch

    circuit closed = reverb off...circuit open = reverb on....The reverb is digital...the switch my be FET of some sort...whatever the state switching logic is for reverb, it isn't going to be like a conventional amp reverb tank switch...like anything it depends if the closed voltage hold the circuit open or closed and what that meaning is...I noticed that with an old crate switch when I used my DT25 with it...Obviously, the switch logic is backwards to the led...not really all that uncommon...

    • tin-soldier Just Startin'
      tin-soldier
      12 posts since
      Nov 15, 2011
      Currently Being Moderated
      Mar 1, 2013 3:28 PM (in response to spaceatl)
      Re: DT25/DT50 foot switch

      are you saying that the channel B selection is the closed state and so the led lights but the reverb works the other way around?  Does that mean that there is no technical solution?

      • spaceatl Expert Line 6 User
        spaceatl
        4,456 posts since
        Jan 24, 2007
        Currently Being Moderated
        Mar 1, 2013 7:51 PM (in response to tin-soldier)
        Re: DT25/DT50 foot switch

        I guess...hard to say without opening up the FS and checking a couple of things with a voltmeter...then you would know...anything I tell you is a guess...but it certainly so seem like the reverb might be inverse logic...could be a voltage threshold thing...My best guess is the DT25 reverb is inverse logic...If you had an old school FS without leds then it doesn't really matter what the logic is...

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