In this Chamsys MagicQ tutorial, we’ll explain how to build a subtractive dim effect that will respect the sub-master that you’re using. As a bonus, we’ll talk about grouping effects on a cue stack too.

Quick Answer: Dim effects don’t always behave the way you expect when you have an active sub-master for the same fixtures. Subtractive dim effects work with a sub-master and function in a more intuitive way.

How To Build A Subtractive Dim Chase Effect In Chamsys MagicQ

Create a sub-master for a set of fixtures, record a regular dim chase effect on the next cue stack, and you may be surprised that things don’t work as you expect. You have to bring your sub-master down for the effect to work.

For a more intuitive experience, follow these steps to build a subtractive dim chase effect instead.

  1. Create a sub-master for your fixtures at full intensity
    Select the fixture group > @ Full > Rec > Select cue stack for sub-master.
  2. Clear the programmer
    Hit the “clr” key.
  3. Create a dim chase effect cue stack
    Select the fixture group > Fx > Add fx > Intensity > Dim chase > change “plus” to “minus” in the “add” column > Rec > Select cue stack for effect.
  4. Adjust playback settings
    Setup > Playback > Intensity (HTP) FX can subtract > Yes.

How To Group Multiple Effects On A Single Cue Stack in Chamsys MagicQ

Using a single cue stack for each effect can take up a lot of real estate on your console. If you have a series of similar dim chase effects for the same group of fixtures, it’s a good idea to group them all on one cue stack.

  1. Record a series of subtractive dim chase effects on one cue stack
    3 is the magic number of effects to group if you want to cycle to any of them at the touch of a button.
  2. Set the cue stack to cue timing
    Select the cue stack and hit “cue timing” in the top menu bar. If you don’t do this, the effects will cycle automatically.
  3. Cycle through the effects
    Raise the cue stack fader to see the first dim chase effect in action. This effect will remain until you cue the next one.

    Play: Cyles to the next effect in the list
    Pause: Cycles to the previous effect in the list

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