Im trying to use the pre out on my amp (Sony 930 center line out) to drive my new center (Plasma TV Box center line in).. Previously, Ive use a normal speaker for my center and all was great.. However, Id now like to use the TV speakers as my center and I get a really really low volume.. i.e. When my amp is on 10%, the TV needs to be on 90% to be at a similar volume... Does anybody know if I am doing anything wrong ? Or does anybody know anything about mis-matched line in/out s? Help !