On the subwoofer following settings: Level: as you like, I would set it in the middle Cutoff Frequency: 40Hz(!), your current settings is around 120Hz, all frequencies below 120Hz are not available on your subwoofer. Phase: 0° or 180°, not in the middle. Set it 0° On the receiver after measure, set all speakers to small. If you select "Large" no bass is sent to the subwoofer