Might be better to get rid of the glass shelve, and replace it with a heavy maple wood replacement. I would even think that a wall mounted target type mount might suit you better. What kind of floor is it all resting on and or where do you believe the vibration problem is coming from? I would say if you have all setting on a bouncy wood floor than go the wall mount way but if the floor is tight than possible gettting rid of the glass might be what is needed.
