Problem solved !! Thanks to everyone who responded. For those interested, the issue was that I had told my Pioneer DV-667A that I only wanted to hear the 2 channel mix of SACD's/DVD-A's but also told it that I wanted to hear movies in 5.1 The Pioneer decided that as I did have 6 speakers it would feed the 2 channel mixes to all 6 speakers. I knew it was doing this and turned my other speakers off whenever I was playing either a SACD or DVD-A. For some reason, the Pioneer was not sending low frequencies to the front speakers whenever I was playing either a SACD or DVD-A but was doing so for CD's and movies. Really weird. A lot of people responded assuming it was the now famous issue of a an older model player not having bass management. Well the DV-667A has bass management, and decent bass management at that. So I fixed the problem by going into the settings menu and telling it I had only 2 speakers attached. The problem is that now everytime I want to play a movie in 5.1 (which is everytime I play a movie) I have to go into the settings menu and tell it I have 6 speakers connected. And if I forget to change it back again whenever I play a SACD/DVD-A 2 channel mix I get poor bass response. Pioneer, you winner !!