Mockturtle,
FWIW, at the risk of being accused of being a contrubutor of more meaningless information, I think what Jax's comments meant was that if your speakers were 8.3 feet apart your ears should be centered and 10 feet from each speaker, and I assume the measurement was from speaker, not the plane of the speakers. IMHO, although it may have been just a coincidence in my present room and with my present speakers, that is about right on, except that I measure from the plane of the speakers (its easier for me to do that) and I usually end up with something closer to 90%. But I don't value the theory that much if it substitutes for actual listening - it is after all just another starting point. Speaker design and room design makes a huge difference when considering set up, both the starting points and the final set up.
Jax 2 - I just posted this and then found your answer. I'm leaving this up because I think, perhaps, it might clarify the distances 'from what/between what' issues.
FWIW, at the risk of being accused of being a contrubutor of more meaningless information, I think what Jax's comments meant was that if your speakers were 8.3 feet apart your ears should be centered and 10 feet from each speaker, and I assume the measurement was from speaker, not the plane of the speakers. IMHO, although it may have been just a coincidence in my present room and with my present speakers, that is about right on, except that I measure from the plane of the speakers (its easier for me to do that) and I usually end up with something closer to 90%. But I don't value the theory that much if it substitutes for actual listening - it is after all just another starting point. Speaker design and room design makes a huge difference when considering set up, both the starting points and the final set up.
Jax 2 - I just posted this and then found your answer. I'm leaving this up because I think, perhaps, it might clarify the distances 'from what/between what' issues.