Isolation from bottom and top cabinets

[analogkid455]

I am building a speaker system that has two 8" RSS210HO-4 drivers in a tower type cabinet and the top cabinet is like a bookshelf speaker. I was wondering what everybody thinks is the best way to isolate the two cabinets.

[a4eaudio]

Is the top cabinet basically a bookshelf speaker sitting on a bass bin? If so, Sorbothane pads are the best for vibration damping but expensive, rubber feet would work.

[wogg]

First standard response: The location under your mains is very rarely the best place for a sub. Aesthetically good, not necessarily acoustically good.

For isolation... first brace the sub cabs well, then regular old rubber feet will be fine.

[buggers]

I use drawer/shelf lining. Works great.

[analogkid455]

Thanks for the replys. Yes its like a book shelf speaker. I am using drawer linings now but I wanted something better looking. I was thinking rubber feet so I will probably go that route but the sorbothane sheet sounds interesting.
AFA putting the bass cabinet in a different spot, I designed it as a tower speaker. The crossover is at 200 hz going to a Purifi mid. I am also using the new Tang Band 2" softdome mid from 1khz to 4khz then to a berylium Belisma tweeter. Quad amp setup with Parasound and Stasis amps.

[DrewsBrews]

Could trim exact fit pads out of sheet neoprene... If you have a place that supplies computer hardware locally you can often get cheap mouse pads to cut up.