I have just built a floor to ceiling bookcase and have put in an electric screen and projector. I am now going to update my very old amp and speakers to a surround sound system. I have been told that most speakers would have a problem being housed in the bookcase that I have built (they would be in the cupboards underneath) as it would cause too much vibration and if I were to pack the speakers out then I would loose alot of the sound. Is this true? as my old speakers don't seem to have this problem. Also my budget for new ones(2xfront, 1xcentre, 2xdipole rears and 1xsub) is about £2,000 - £2,500 what would you recommend? I am thinking of running this through a Dennon avc1se.