monoLOW : low band conformance machine. monoLOW is just about the simplest tool going. The lower its frequency, the more a sound loses its directionality, so it sometimes makes little sense for frequencies below a certain point to be spread accross a stereo mix – a stereo bottom-end can cause a loss of focus.
2 simple controls allow mono-izing of the low band – frequency below which all is mono, and a cut / gain control for level. Throw in an audition and defeat button and the job’s a good ‘un.