help thiel 2.4 placement???


i am having some problems placing in my room a pair of thiel 2.4, acording to thiel they should be far away from the walls, they recomend 3 ft at least from the back walls and 5 ft from the side walls.
i did this and i am not getting any bass, if i put them closer (1 ft) from the back wall i get much better bass but thiel does not recomend this.
right now i have them 2.5 ft from the back wall, 6 ft apart from each other, and the listening position is 8 ft away. sound is ok but i know it should be better.
does any body have experience placing thiels, please help
thanks in advance.
rcoppel
thanks for your answers, because my room is 12 ft by 15 ft, i could only place them 6 ft apart (because of the door of the room), but toninght i will have to change the whole set up of the room so i can position them 8-9 feet apart and 2-3 feet from the rear wall and 2 feet from the side wall, listening posistion would be 9 ft away. from that position i will start to move them around and look for the best set up.
That should help tremendously.

I have my 2.4's a little farther apart then Redkiwi suggests (maybe one foot more) but I also have them toe'd in quite a lot. (I tend to favor toe in because I like focus and prefer a small, focused soundstage to one that's bigger but more diffuse.) However, Redkiwi's advice is brilliant (as ususally) and I'm going to do some experiementing.
Slight clarification. I meant to say that isolation cones attached to the bottom of the speakers and affixed to the floor or metal pucks add a lot to the character of Thiels. That's what I meant by "speaker cones between them and the floor". These are typically solid brass cones with the flat side attached to the speaker via a threaded cylinder (i.e., bolt without the head) and with the spiked side toward the floor. The impact on the CS-6's was spectacular and immediately evident. Send me an email if you would like more details.
Ozfly: I take that what you are talking about is in replacement for the included spikes Thiel supplies with their floorstanding speakers?
Yes. I opted for brass cones/discs because: 1) They looked a lot nicer and that appealed to my wife, 2) I was able to purchase brass pucks with the cones so did not have to leave permanent marks on my wood floor, and 3) By the time I ordered the cones/pucks, I'd forgotten that Thiel shipped the spikes with their speakers (they were in the box). Well, what can I say???

However, I did try the Thiel spikes later with the pucks and didn't like them quite as much (though they are certainly better than no spikes at all). Good catch. Since the cones/pucks weren't very expensive, I continue to recommend them. But, no reason not to try the spikes first, especially on carpet (I'm still not crazy about leaving holes in the wood floor). Thanks Zaikes.