Sometimes it’s nice to have a wet/dry control for effect plugins that don’t have one built-in. You could put the effect on a send and use it that way, but that has certain drawbacks. A major one in Ableton being that the sends aren’t delay compensated so you can run into phasing artifacts when doing things like parallel compression.
One easy way to get around this is to use an audio effect rack as an insert. Basically you just add an effect rack to the track you’re working with then create two new chains within the rack. On one chain you will put whatever effect you’re using and the other chain will be just the dry signal with no effects.
Next, you’ll need to click the little ”chain” button to display the zone editor. Now just drag the zone marker for each chain so that it fills the entire ruler, like image 1. You’ll probably want to tweak the ranges a tiny bit so that the dry zone extends from 0 to 126 and the wet zone is from 1 to 127. The reason for this is that if both chains take up the full range you’ll still be getting a tiny bit of signal from the wet chain when the chain selector is all the way to the left and vice versa.
At this point, 100% of the audio signal will pass through both chains. Now what you want to do is drag the lighter-colored bar to create a crossfade like I’ve shown in image 2. This part is a little fiddly, so if you’re not sure where to click for the crossfade just look at the picture.
After you create the crossfade it should look like image 3. Now as you move the chain selector (the little red vertical bar at the top of the zone editor) around you will get varying amounts of the wet and dry signal.
The last thing to do is map the chain selector to one of the macro knobs so you will have one knob to easily mix the wet and dry signals together. Now when you turn the knob all the way to the left you will get 100% dry signal, and all the way to right will be 100% wet.
There you have it – an easy way to add a wet/dry control to any effect without using sends.