Chris,
The Nordost test disc actually plays an in phase and an out of phase voice. The in phase voice is in the center with appropriate base. The out of phase voice is thin sounding and kind of floats around your ears. You should be able to tell the difference using the method Zd542 mentioned.
The Nordost test disc actually plays an in phase and an out of phase voice. The in phase voice is in the center with appropriate base. The out of phase voice is thin sounding and kind of floats around your ears. You should be able to tell the difference using the method Zd542 mentioned.