hifi engine

Technics CD Player SL-PD665 Vocal track

Up until a recent move, our Technics sound system had been working fine. Since I set up at our new location, however, the vocal tracks on cd's are not being read properly and sound very distant. I have checked all speakers, and other sound functions don't seem to be affected. I seem to remember having this issue once before, and it was a really simple fix, but for the life of me, I can't figure it out this time! Can anyone help? The system consists of an SA-G67 receiver, an RS-TR180 cassette deck, the cd player and five speakers.