Well , after trying out various things I connected a Bose Sub Ihat I have. The sound is not room filling, but house filling !!!. The highs are extremley good, but there is a lot odf room to improve in my opinion - with a nice tightt sub. You are right , these speakers require a nice well engineered sub. Any recommendations in the not so exotic price range. ? This community is full of really nice people - appreciate the expertise, warmth and the friendliness of every one. Thanks a million.!!!