floorstanders on carpet over concrete


I have my Paradigm Studio Reference 100v.2 in the basement on berber carpet over concrete floor. Initially I didn't use spikes trying to place speakers before spiking them down (as you know, Paradigms are quite heavy and not easy to move around) and the bass "boominess" was very strong. After installing spikes the "boominess" has decreased somewhat, but didn't go away completely. Interestingly I didn't notice that much "boominess" before I installed two dedicated 20 amp. circuits, I guess that the bass extension improved dramatically, hence the "boominess" problem ( what a controversy). So I have a few questions:
1. Is the coupling (decoupling) to the floor is the one to blame? and what should I do about it? granite slabs b/w speakers on spikes and the carpet?
2. Is this the room acoustics? and the bass traps are in order?
Please, help!!! The further I move into this, the more problems seem to surface.
maril555
One comment about my speakers placement- the basement is inverse L-shaped with the listening room occupying short part (17x21 ft.),which places the right speaker near the long wall, with the open space to the left of the left speaker. The distance from the short back wall is appr. 4ft., the distance b/w speakers is 8-9 ft., so is the distance from the listening position. If I'll decide to go the bass trap route, what would be your reccommendations for the traps placement.
I would try tube traps or echo busters. Go to there web sites as you can get great info for this. Room acoustics play a huge role in sound so you need to get educated about this. There are many types of room treatments that dont look half bad and will blend with room decor. I used Bass Busters, Echo Busters and Sonex Pyramids all improved my room by a bunch!
Happy Tunning!
have you stuffed the ports to dampen the bass a bit? try 1/4 thick foam rolled up to fit the diam. of the port or ports. try different lengths and or thicknesses. you never know, worked for me.