Thank you Kiwi. Yes, they said the granite made them sound less boomy. The Raidho/Rowland room was excellent sounding. Blackest backgrounds.
Thx to both Kiwi for noticing this and you Mike for replying. I had noticed the slabs under the D3's but I did not think much about it. When I saw your comment Kiwi and Mike's answer I placed two granite slabs under my D3's......in my room, it became a TOTALLY different speaker. More pinpoint imaging, BUT most importantly for me, with the SS Goldmund Telos 280 I am hitting peaks of about 102db with NO popping or any issue with the bass other than the bass sounds better than it ever has with the D3's. It seems to both go lower and the mid bass and lower mid bass seems totally cleared up. It has become very transparent in the bass with no "one note bass" you can hear bass texture clearly. Wow, what an upgrade....thank you Kiwi and Mike.....REALLY A BIG THANK YOU!!!