here it is, first mentioned at the Indianapolis Ableton Live User Group meeting on April 5th, 2005 as the "Tip of the Month".
http://18.104.22.168/azurerecords/file ... yTrick.zip
in this .zip you will find UtilityRemix.als and the UtilityRemix Sounds folder.
This .als demonstrates how you can use the Width knob of 1 Utility Plugin to remove any material that was not originally panned in your source material. By turning the Width knob all the way to 200%, Mono material (material that does not sit more on the right side or the left side, but exactly evenly down the middle) is removed from the mix.
This is great for remixing vinyl based dance music as generally everything under 500hz is mono in this music. Because if you pan these Bass sounds, the needle will skip off the record. Thus, this trick is great for removing Bass from a track without using an EQ that would remove frequencies from other sounds as well. You can really isolate sounds from other sounds. Its all about CONTROL.
The simplicity of this makes it easy to do in the studio, or on stage for Live remixing.
So, turn the Width all the way up on the 1st Utility Plugin, and then engage the 2nd Utility Plugin to boost the output, and make the result mono so its not crazily spread out in the stereo field.