I have a Samsung LE40N87 tv, Sony Davis-10 DVD system and just added a Sony S360 Blu-Ray. I was always happy with the Davis 10 but since moving into Blu-Ray all I use if for is the surround sound. The picture on the Blu-Ray is amazing but the sound not so great. Don't hear any difference over normal DVD's. Is there anything I can do with the Davis 10 to improve it, or is it time to move to separate amp and speakers? I use QED performance HDMI cables. Any advice appreciated.