I'm bringing this back into the forum, which is where you will get the most help.
You did not specify which RME 9652 you have, the pre HDSP version or the HDSP version. I don't remember the applet from my pre-HDSP version. You'd have to get help from someone else if that is what you have. But the HDSP version uses Totalmix, and unless you have the routing and levels set up correctly in TotalMix, you will not get what you want. So read the TotalMix manual. From what you have given us to work with, this is the only stumbling block that you have, unless there is something wrong with the RADAR or you don't know how to set it up. There are a handful of pre-configured presets in the TotalMix mixer, one of which will probably be what you need. If not, it is a simple matter to set your own and save it to a preset.