Hello, I have a 70" inch long TV cabinet that doesn't leave me too many choices in terms of sub placement. If I place it next to the stand, would it sound weird far away from the TV? Should I place it in front of the TV and the cabinet? If I just leave the sub flat on the floor, I am afraid it will disturb the neighbor downstairs. Can I put a rug underneath it to absorb the vibration? Will that affect the sound and heat ventilation?