Diaphragmatic Action

Low-frequency waves are powerful enough to cause the walls, ceiling, and even the floor to flex and move. This is called “diaphragmatic action,” and it dissipates energy and strips away the low-end definition. Therefore, if a room’s walls and floor are made of solid brick and concrete that don’t vibrate much, the bass response is going to be much more powerful than in a room where the walls are normal sheet rock construction and the floors are hardwood. For more information, please refer to this article.