The easiest way to setup VSX in REAPER is to use the monitor FX Bus.
Click View and Select "Monitor FX" and add VSX To this bus.
However, if users want to have speakers and headphone mix we are going to go over using VSX on a separate bus so that users can easily switch between the headphones and speakers without having to bypass constantly when trying to A/B. In REAPER allows the option to create headphone mixes very easily so this will allow for a great workflow.
- Create an MIX BUS track and drag all the tracks onto this track make a group folder fader.
- Create a track called VSX HP Bus and set its output to 3-4 and receive from "Mix Bus" and set it to pre fader.
- Add VSX Plugin to the VSX HP Bus track.
- Setup the Audio Interface to monitor outputs 3-4 in the HP send.
Now the speaker outputs will be "clean" and not have the VSX room models on it while the headphones will always have VSX sounds making it very easy to switch between Speakers and Headphones. NOTE: All mastering effects should be done on the MixBus/Group track so that the users are hearing the final master through the VSX plugin. If more plugins are added to the Master fader then these will not be heard through the VSX plugin return track. If using Room Modeling software such as Sonarworks, be sure to add this plugin on the Master Fader track so users aren't "Double Monitoring" through Sonarworks and VSX as this will blur the accuracy of the VSX Hardware.