Thiel 3.6 and 'grounding' / insulating


I have a lovely old house with hardwood floors. I just bought a pair of Thiel 3.6. I plan to use the stabilizing pins / spikes provided with the speakers (probably put the spikes on quarters or something). My question: would it be worth my while buying a pair of thick (2 inches or so) granite slabs to put under the speakers with the spikes? Has anyone tried this and if so, what were the results? Thanks.
pvanosta
Thanks, audiotweek for your input on audiopoints. Has anyone tried sound anchors stands for the Thiel 3.6? I agree that the bass and midbass on the 3.6 could benefit from some 'tightening'. This may be a little extreme, but I also painted the insides of my thiels with a borosilicate dampening compound from Audio Concepts with excellent results. Even though the stock cabinet is very heavy, the treatment improved soundstaging and resolution and reduced the midbass 'hump' in my room. Premium high current amplification is also a prerequisite to getting the thiel's bass to behave.
Jph1 I agree with you, accoustic sealers painted on wooden panels do in fact improve soundstage and detail. I used a product available from Cascade Audio Engineering on my still somewhat Dunlavy SCIV's. What a royal pain to do, but oh what an improvement. Even better than Audiopoints are the Sistrum platforms from Star Sound they take all speakers to beyond the next level.
Thank you all for your input.
I'll be receiving the Thiel 3.6's this Friday...no sleep for me this weekend .
The 3.6's will also benefit by the extra couple of inches elevation the granite slabs will provide. The optimum listening position seems to be (for me) near the midrange driver. Most chairs (mine included) are a little too high although a little extra distance between you and the 3.6's will help. I would plan on at least 10 feet between you and the 3.6's. Also,placement away from the back walls helps avoid any midbass emphasis - although I don't have too much problem with one of mine placed near a back wall.

Good luck and experiment lots with positioning - not easy with these big lugs....

Rich
So far, I have put the Thiels on the spikes provided by the manufacturer, and put the spikes on quarters. The speakers are well clear of back and side walls (3 or 4 feet from the back wall and 3 or 4 feet from the sidewalls). They are about 6 feet apart, slightly toed-in and 10 feet from the listening position.
The bass has tightened a bit, but I could do with a bit more. I'm looking for a supplier in my area, who will cut me a couple of stone/granite/marble slabs to my specs, so I can play with that.
Any speaker cable recommendations anyone? I'm currently using thick, multi-strand solid core Audioquest cable, with spade lugs added by the dealer.