Why does bass have more “punch” when I stand up vs. sitting?


I have Rockport Avior speakers and I notice when I stand up the bass is slightly louder and has a little more punch than when I am sitting. This is with the same distance from the speakers. And the speakers are level with the floor. I do like the sound more when standing.  Has anyone experienced this?  Suggestions as to how to have the bass response while sitting as I do when standing?  
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Showing 1 response by avanti1960

standing also reduces the relative level of mid and high frequencies making the bass appear louder in addition to the room modes.
best results will happen if you can move your speakers well into the room, 4 feet to the wall if possible.  also if you can move your seated position closer but not too close to the wall behind you.  
if your positions are locked then a sub or two is a good option.