Isolation question. Monitor on Subwoofer


Just curious...

I have 2 subs, and due to space limits i have been thinking about going with Monitors and putting them on the subwoofers.

Here is my idea, if anyone knows if this will not work please let me know why.

Subwoofer on spikes.
On top of subwoofer either a marble or granite slab. Felt beneath the slab to keep it from scratching the top of the sub.
Monitor speakers coupled on small custom built stands (possibly built to hold sand or leadshot) to achieve the correct height, spikes on the stand which would sit on the granite above the subwoofer

Would this achieve decent isolation between the monitor and subwoofer? I see alot of speakers with built in subwoofers, or other types of speakers with the fullrange box and monitor on top, (GMA Continuims, Watt/puppy, etc)

Thoughts on this from you Coupleing/Isolation Guru's?

Would this do a decent job of isolation or should i look into other methods?
slappy
not a very smart idea for several reasons.   get some stands and move the subs.  
@avanti1960 - I am so sorry, I didn't really look at the year.
It's an old and long dead thread. Excuse me.

Actually it's not entirely without merit, using springs and the substrate to isolate both the tops and the bottoms. We've seen many smaller speakers placed on top of sub boxes, but to really isolate them extremely well??

I think there's a better way, using something like I've discussed here. Suspend the stand mounts above the subs, which are also isolated on springs.
Then have another two matching subs elsewhere in the room, as a DBA, they will match the looks, it's an interesting proposition, don't you think?
Well Rick and Miller I still stand by my advice that I gave to Slappy 17 years..the Sistrum and Audiopoints are still most effective. Tom