Does Shelved Bass Help With 3D Effect?

3D is a house of cards. For me it entailed speaker position, FFRC cables (I'm on a crazy budget) and Bugle Boy tubes in my linestage. Up until then I had nothing even close to 3D, but suddenly with those three things organised I've got amazing holography. My question is this: Once you have all your ducks in a row, how much of holography is down to the shelved bass that happens with tubes? Solid state always seems to put the bass (wonderfully) in your face. I realise that solid state can do holography too, just wondering if shelved bass is the reason tubes have a reputation for 3D?