Air Bladder Isolation, Cheap

Group some comments to consider: Tom how tight do you fill the tubes? My experience is the same as Gthirteen that points to minimally inflate them. On the other hand be aware that oils attack rubber and in the long run weaken the wall material which might lead to leaks ( not a pleasant scenario considering an audio rack). Avguygeorge the tire stuff works because the sticky compound (very small quantity) inside temporarily blocks puncture leaks since it's forced to the outer inner part of the tire but still let some material go out the tire and are not permanent meaning you might have minor leaks of sticky stuff. (Think plain air is better) I think that the less vibration transmission the better thus favor very low air inflated tubes. Garfish: I use MDF or particle board on top of the tube, then cones for placing the component on. Have tried cones point up and down and results are judged by ear. Inscrutable I tested different set ups before deciding what is best with my equipment: from top to bottom component, cones, MDF,tube, cinder block concrete floor. When the tube was set between cinder block and concrete floor I got the best result. So it's a close to Brightstar setup. Note that it's a concrete floor in a house with no basement. There's some vibration even on concrete so be careful when considering a wall shelf since this could affect the audio gear. Patience and trials are the name as usual. My final plan is to do a MDF sheet, sandbox, tube type setup very close to the commercial available one. This is just some experience sharing that might be interesting to consider. Regards