The first home cinema audio setup I bought included a small 100W Polk sub base (can't remember the model number). At the time I was stunned by the effectiveness off the unit, seeming managing to pervade the whole house at only modest levels, producing an incredible presence even seeming to move the air in the room to the point of causing a draft up your trousers legs! I've now been through a couple of sub base units over the last 10 years and am now on a couple of Rel Storms (for 4 years now). These where chosen due to there incredible clarity in music reproduction. The thing is, I've never been able to reproduce the presence and draft generating ability of that original Polk unit inspite of much larger power output and seemingly better dynamic ability. Anyone know why? The Polk had a solid base plate attacted to the cabinet which just laid directly onto the carpet without spikes. The rels ways a ton and stands on spikes. The question is, was the use of a base plate in the Polk the reason for its better presence? I'm going to try dumping the spikes from the Rels and bolting them to a sturdy flat base of some kind (someone at work has suggested paving slabs!). But any other suggestions welcome... Cheers, John.