By itself it could be problematic but with proper EQ you can run anything. I had two 18" Servo Drives in my smallish HT room for a month and they sound great. I was able to use the Velodyne SMS EQ from my DD18's as well as the room correction from the Pioneer SC receiver. Modern room correction can do a decent job by itself.
Just because you have a large sub doesn't mean it's going to be running flat out. They don't need to be used to their full potential to sound correct. Room nodes need to be addressed by means of EQ, multiple subs, and /or room damping. Simply using a smaller sub does nothing to fix a node.
Just because you have a large sub doesn't mean it's going to be running flat out. They don't need to be used to their full potential to sound correct. Room nodes need to be addressed by means of EQ, multiple subs, and /or room damping. Simply using a smaller sub does nothing to fix a node.