First of all, congratulations on your twins! I have a set that will soon be four and raising them and our 5 year old has been an adventure to say the least ... and extremely rewarding! I will say that the first three months of your twins lives will be the most challenging you have ever faced. Not to worry though, it gets easier from there. Feel free to email me anytime if you want to discuss twins.
As far as the bookshelf situation, the Sound Quest ISOL-Pads isolation pads may help: http://cls.audiogon.com/cgi-bin/cls.pl?ddaccstwek&1136916573
I have not used them for speakers on a bookshelf. I have used them under speakers on various stands and noted improved sound in situations where the speaker and or stand were not well damped. I also used them between the sat and sub modules of my VR-4jr speakers.
Enjoy!
As far as the bookshelf situation, the Sound Quest ISOL-Pads isolation pads may help: http://cls.audiogon.com/cgi-bin/cls.pl?ddaccstwek&1136916573
I have not used them for speakers on a bookshelf. I have used them under speakers on various stands and noted improved sound in situations where the speaker and or stand were not well damped. I also used them between the sat and sub modules of my VR-4jr speakers.
Enjoy!