Partington have been building top quality stands in the U.K. for decades, have won many awards and really know their stuff.
the Super Dreadnought can be filled to dampen them and improve their sound deadening ability. This also allows you to "adjust" the level of bass in your room where the stands are situated. By filling them fully, maximum bass response is realised from your speakers, so we recommend filling them half way, listening to your speakers where you have them situated and then adjusting the position of the stands and/or filling them incrementally more until you are happy with the level of bass.If you are a total bass head then just go ahead and fully fill your stands and leave it at that. If you favour a more balanced approach which lets music to breathe and allows other portions of the musical spectrum to bloom and fully play their part, follow their advice and try moving your speakers and balancing fill levels to achieve a good balance instead. You may actually learn a thing or too as well - unless doof doof land is your idea audio of nirvana.