Another soundstage question

Cables affect the soundstage too. And power cords , especially on the preamp but everywhere.

Lowrider is bang on! I have a pair of Tannoy Berkeley's that are very low speakers. I rake them back a bit and sitting about 6 feet away I can get a termendous Soundstage, height wise as well. Now obviously Tannoy's image and stage a little better than Vander Steen's but the same principles apply. I have to disagree with the cable comments, they make virtually no difference. Maybe cables that handle your very low level signals but don't waste your time with power cords at all because they make zero difference. 

Also another poster recommended Tubes which I heartily agree with! Tubes will give you that holographic image that solid-state can never touch.

Kalali, FWIW, and it has already been touched upon, often much of what folks are willing to accept as 'height' is a result of the design of the speakers which might have no relationship to reproducing what is actually on the disc. For example, planar speakers can create a very full sound stage in all dimensions including height, but unfortunately often what you are hearing has very little to do with accurate reproduction of the size/tone of the instrument/voice etc which is being played.

 Just listen to a solo voice which on panel speakers can occupy the whole stage (perhaps what is were the term 'big mouth' is most appropriate). On these speakers, to compensate for this manufacturers add a ribbon tweeter to bring the high frequencies into better focus.

Then there are omni directional speakers which by design rely on reflective sound to create a large multi dimensional sound stage. They do work well with big orchestral pieces in making them sound like a live performance, both of which have reduced resolution and specificity (unless you sit in the orchestra pit regularly). 

Then there are 'box speakers' which can, if properly designed, set up, driven, etc, accurately portray the music as recorded, if that is what is important to you. Unfortunately a lot of recordings really have no 'height' element in the pits/grooves. The effort is great and the rewards can be small. 

I think that is why so many folks love omni, panel, and electrical speakers. With a few notable exceptions, the sense of a full sound stage is always present and rarely faithful to the recording.

In setting up box speakers to get maximum soundstage reproduction I think you are best served by minimizing the effects of reflective surfaces and the effects of too much bass or treble response (too much bass masks high frequency information, too much upper mid range/HF information gives bright unnatural sound not heard in real life. (Unfortunately many folks think this upper frequency information is evidence of 'resolution' capabilities of their systems, a thought encouraged by a lot of manufacturers/retailers, etc)

I've overstayed my welcome by now. Find a copy of Depth of Image! :-)

I decouple my speakers from my wood floor, and have lifted them to get the tweeter to ear level…I have zero room treatment except the stuff in the room (furniture, rugs, a full sized stuffed Lama) as I simply like the sound of a room…it's a normal sound to me (side walls aren't close enough to be an issue) with a tall ceiling that slopes upwards from the front wall. I'm lucky…and note that the soundstage one might want is listener specific so, again, I simply recommend you move the speakers around until YOU like it, far enough into the room to sound good but not get knocked over by your drunk cousin Shirley.