Can you draw a picture of your wiring? This might help us understand why you are running into problems. Since the IR-X only has a mono fx loop, you should only be connecting to Input 1, as this is what is adequate for mono operation. Do not use Input 2 for anything. If you want to run the H9 output in stereo, connect a mono signal to input 1 and then connect Outs 1 & 2 to two amps or sims.
