I just purchased a Pioneer DV-578A-s DVD player in the hope of listening to SACD disks. But to my grim disappointment, I only hear audio from the right and sub-woofer channels. I did a quick test of reversing the main right and left connections on the back of the 950 but the audio still only played through the right channel & sub. While I could never hear anything from the left channel, I did notice a lower volume coming from the sub-woofer which would indicate to me that the signal is fine to the point that the channel is combined for the sub output. I also tried switching between sources as suggested from other users but the problem continues. Anyone have any suggestions or am I stuck having to send it in for repairs. As this is the first time I used the 6 channel analog inputs, I figure that it never worked.