ok,cookout is over,hope everybody had a good easter.sraber,i was thinkin' 'bout pics of the svs sub that had 3 ports,and the 'plug n tune',not really sure about how they design these things(technology,huh?)but then again,i've peered into many subs over the years,car and home(most of my knowledge stems from cars,but,same difference) and many 'higher end ' speakers,and not seen an ounce of absorbtion material,but...have seen PARTICLE BOARD as a rear panel in 'monitor' cabinets,which i understand absorbs some resonance and the damping is not necessary,go figure!figure out some kind of rules and they change everything!