Hey guys,

I am trying to get my head wrapped around some subwoofer questions. I am sure someone will be able to help me out here...

When I am using a powered subwoofer with its own amp, I am sending pre-amp signal from my AVR to my sub, correct? Now this signal, does it only carry the frequencies (in the form of current) or information about the "volume" as well. What I am trying to say is that with the subwoofer volume at a certain level, how does it decide that the explsions are supposed to be louder than lets say a person falling on a wooden floor. What information does a pre-amp LFE signal carry to the amp of a power subwoofer.
Thanks