I have a decent sized listening room (12 x 24 x 8), hardwood floors, plaster walls, listening couches in center of room. I bought 2 12" subs, decent manufacturer (PA), listening volumes not extreme. But my eardrums would start to throb, seemingly more from the amount of air the subs were pushing than the frequencies themselves. Moving them around the room did not help. I'm wondering if any others have had this problem and if there were any workarounds that worked. I tried changing the cutoff frequencies but perhaps I didn't try the right approach. Again, please don't interpret this as trolling. There is an entire octave or more that a string bass can play and I can enjoy that my front speakers cannot render- I'd like to find the solution.