Here, copied from an older thread, is a reply from Thomas Serafini, DSP Developer at Overloud (Who developed the Console Emulations in X2):
"I'm going to answer your questions from our DSP development perspective which is not related to the parameter naming. The Console Emulator module emulates the summing circuitry of the mix bus.
Its natural position is at the end of the chain (last module in the channel) because in a real console the summing happens after all the channel processing. The Trim control is not related to the "Input Trim" control of a real mixer; it is something which controls the amount of these "summing effects". The Console Emulator module is not a channel strip plugin; it only simulates the mix bus summing effects. It also has a Drive control in case you do not have any preamp simulation modules and you want to boost the channel gain and increase the amount of nonlinear processing. This is more like to the "Input Gain" control on the preamp of a real mixer.
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You can also experiment some creative use of the Console Emulation module by putting it at the beginning of the chain: with this configuration you can use the summing circuit effects to create harmonics for your next processors.
This is a creative use and it is not intended to simulate how a real console behaves." Any comments?