Rusty Messages: 1186 Registered: May 2018 Location: Kansas City Missouri
Illuminati (3rd Degree)
I think what your describing is accomplished by the recording engineer using control knobs to "pan" the instrument or voice across from one stereo speaker to the other. A very old technique since the stereo effect was introduced. So, if there is no other anomaly going on with your speakers out of the ordinary, that's probably the effect you heard. It's how the recording was made. Your speakers are just reproducing it. Like they're suppose to.