Originally Posted By: http://blog.edesignaudio.com/
The main purpose of the isolation pad is to decouple the sub from the floor to reduce loss energy spent traveling through the floor and to give the sub just a little more height.

I'm not sure I'm following the physics. Doesn't an isolation pad absorb energy, thus subtracting it from the system, and wouldn't that also be energy loss?

I can explain it to you but I can't understand it for you.