Good additional sonic insights, Peter. A recording in a live space, rather than an anechoic recording booth, does indeed make it easier to hear the size/shape of the solo instrument/voice as well as the space itself. More sonic cues for the ears/brain to pick up on.
Many years before the Fozgometer I owned a share in a Wally Analog Shop, which also allows direct measurement of crosstalk when used with L only/R only test tracks. Minimizing crosstalk is one of the key goals of azimuth adjustment (channel balance is not, azimuth has little effect on that).
After several months, three of the Wally's four co-owners realized that he could adjust azimuth by ear about as well and much faster, with no expensive tools or test LPs. Using the device and seeing the numbers was fun in an audio-geeky way, but if we think for just a moment about what "minimized crosstalk" must sound like it's easy enough to work out what to listen for.
Many years before the Fozgometer I owned a share in a Wally Analog Shop, which also allows direct measurement of crosstalk when used with L only/R only test tracks. Minimizing crosstalk is one of the key goals of azimuth adjustment (channel balance is not, azimuth has little effect on that).
After several months, three of the Wally's four co-owners realized that he could adjust azimuth by ear about as well and much faster, with no expensive tools or test LPs. Using the device and seeing the numbers was fun in an audio-geeky way, but if we think for just a moment about what "minimized crosstalk" must sound like it's easy enough to work out what to listen for.