What should well placed speakers sound like?


I'm relatively new to a hi-fi system. I'm slowly upgrading, but have recently purchased Meadowlark Kestrel Hot Rods...getting rid of some old JBL speakers (10 years old+).
I'm wondering as I try to place the speakers....what should I be looking for? That the sound comes from the middle of the two speakers (as opposed to the speakers)? Can some of you in-the-know explain the concept of soundstage and speaker placement and what to listen for when placing the speakers.

I have them 7 feet apart (can't really change due to the set-up of my living room) and a somewhat toe-in (which seems to help).

thanks
-s-
songlian
You know the placement is right when there are no speakers in the room. The soundstage is wide and deep and the imaging is pinpointed. You can accomplish this by getting the speakers out from the far wall and placed properly from the side wall. My speakers are about 7 feet out from the far wall and are seven feet apart. Use a tape measure and get it down to the correct inch. I have two 6 foot tall tube traps that are against the side wall just forward of the speakers. Adding those just nailed it. Bought the pair of them locally for $200. Best $200 upgrade I have ever made.
I know when placement is right when the highs and lows are balanced with the mids. With mine anyways there is some play left for soundstage, as in to have vocals in the middle when they should be. This play really just pertains to the distance between the speakers. Making the toe-in angles equal is also needed to appropriately place points along the horizontal axis, but the degree of toe-in is just to adjust relative amount of high frequencies. As long as what should be is centered between the speakers and correct position for frequeny response, your equipment and room will dictate the quality of the rest of the atmosphere. Your's is a good question, but staging and imaging are less important and than they are made to be. The best soundstage, created by the best systems, is the most undefined.
Thanks for the information. Unfortunately, I can only position the speakers in so many places. I can't pull them out much from the wall, maybe a few feet, and can barely move them away from a side wall (at least one of the speakers)...again due to the room size. The speakers are pretty small and I have a dog, so I have to position the speakers a bit back, so she can't run them over (big dog).

I have them positioned probably as best I can right now and it sounds great...someday i'll have a dedicated listening room and can do something better...
Here are two great placement sites :

http://www.audiophysic.de/info/aufstellung/e_index.html
http://www.cardas.com/insights/index.html

If you have speakers next to side walls or rear walls in my experience it kills the imaging. One day, just for fun, pull them out into the room and see what happens ... you might find that the imaging is so wonderful that you can't put them back and you have to live with them in the middle of your room. Friends will laugh at you, but then that comes with being an "audiophile". You should see my listening room .. what a mess !