Powernode surround low volume

I started with 330 for fronts and later added 1st gen powernode for home theater group. The rears that are connected to 1 st gen powernode sound very low volume. The volume test works fine but when I play Dolby content, I hardly hear very low volume from surround. I tried different inputs/content to check the encoding issues. I played with volume level setting while creating home theater group. No luck. Am I missing anything? BTW the rears sound fine no issues. They are Paradigm ADP 370 with no issues in another setup.