IMO. In CAN be. The biggest advantage to multiple subs is smoother response over multiple seats. That’s not to say a single seat can’t benefit from them also, but sometimes we forget to add that you can’t just plop a bunch of subs in a room and have it be great. If you have the luxury of being able to place them identically, that will go a long way, but it still takes some work. What sub/system do you currently have, and is there something you think is missing, or just a curiosity.