odd question about stand-mount speakers


Is there any reason you shouldn't turn stand-mount speakers upside down and listen to them that way, as long as you use some kind of vibration control/decoupler between the speakers and the surface they're placed on? The reason I ask is because, at least in a near-field setup, I would think having the mid/woofer ABOVE the tweeter would enhance image height/size -- assuming the tweeter is kept at ear level. (A couple of asides: I don't currently have bookshelf speakers, otherwise I would experiment. Will likely be buying some in the near future though. Also, I know that there are some stand-mount speakers that place the mid/woofer above the tweeter, but the vast majority do not -- most of the ones I'm interested in do not.)
128x128hiphiphan

I’d focus on monitors that are designed that way unless you can arrange an in-home trial of one where the tweeter was designed to operate above the midwoof.  FWIW.

It depends on how the crossover was designed and it's affect on vertical dispersion and interaction between the 2 drivers. The dispersion won't be the same upside down and a good speaker was designed to be used the way the designer tells you.

Dynamic is correct. You can end up with a giant suckout or a boosted area in the frequency response where the 2 drivers interact due to their design and the crossover design. 

Oh, ok. Bummer. But that makes sense. I guess as I get closer to making an actual purchase, I could alway contact the manufacturer and see if their specific speaker would be a poor candidate for my experiment. Thanks for the replies.