Page 51 of Pioneer HT receiver, manual tuning instructions (as opposed to using the test mic and automatic internal software program).
During this tuning process the L Front speaker is the Reference speaker and stays at constant level throughout the test. In sequence, the user adjusts each speaker (other than the L Front Reference speaker) to the L Front Reference speaker.
Manual page 51 instructs user to "Stand facing two speakers with arms outstretched pointing at each speaker." Emphasis added. I presume this can only mean, tuning R Surround: L arm points toward Reference speaker (L Front), R arm toward R Surround. Tuning L Surround: L arm points toward L Surround, R arm toward L Front. Is there other potential meaning?
This part is clear: "...make the two (test) tones sound as if they arrive simultaneously at (imaginary) point slightly in front and between arm span."
Why would user "stand" for this test rather than sit? Possible error?
