Vocalist Height system dependent?

I would say it is more recording dependent!

Most likely an artifact of your room acoustics and your specific vertical speaker driver configuration within the room.

Different wires and even electronics might change the timbre and change the perspective accordingly as SPL levels of the different vertically aligned drivers changes accordingly as well.

All speakers share the quality that room acoustics will affect timbre/tonal balnace to some extent, but I suspect the highly noticeable change in perspective at various frequencies is more due to the specific physical vertical driver configuration in your specific speaks.

Shadorne all your points are good ones. I was just wondering if others have noticed a change in soundstage height when making changes. Also i sit about 10.5 ft from my speakers and vocals are like there up on a stage ie Eva but Diana Krall is lower which would be correct i guess because she is sitting down.

What has efected the soundstage height Fwiw is the changes I made to my grounding scheme.

also what height is considered the norm or is it all over the place.

I have not noticed changes in SS height changing components with Either OHMs or Dynaudio monitors.

My hypothesis would be that this is due to close vertical proximity of drivers in these specific designs, which closely approximate a point source of sound from my typical listening distance/position.

I measured my mid range driver is at 40 inches.

Then I would think your tweeter is around 48 inches. If you sit 10 feet back with ear level at 36 inches in your comfy seat then you should have the impression of a vocalist standing at about the right height.

Remember that funny flap of skin around the ear....well it has an uncanny ability to judge the up down direction of where a sound is coming from (it also tends to cue on things in the 4K to 12K Hz range which is why sounds tend to appear to come from tweeters - even on three ways).

Also the more energy from above the plane of your ears (direct and reflected off the ceiling) the more the pinea will be telling your brain that the singer is above you.

Since music can be reverbed and deliberately engineered to give you an impression of space or height you really need to try many recordings (with no added ambience effects) to confirm.

Alternatively;

Try Tom Petty "Last Dance with Mary Jane" - lead guitar from the right and Tom Petty Dead center at tweeter height (not much added ambience on this one).

Try Tower of Power Soul Vaccination "What is Hip" - singer and band should apear to be up on stage (loads of ambience here).

Try George Bensen Weekend in LA Live "On Broadway" - Harvey Mason's drum set appears to be on a stage and you can hear him move around the set.