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[QUOTE=&quot;nbound-au, post: 102586, member: 12875&quot;]Fringe reception is correct about the echo, the time for cable propagation is tiny, it is imperceptibly short. The time for processing is much larger but even it only makes a small difference, what you are hearing is that some TVs maintain a larger memory buffer of the incoming stream (if different models) and/or also that the the distance the sound has to travel through the air the distance between your two TVs (all else being equal). The speed of sound is perceptible over relatively short distances (343m will provide a full second of delay, 34m will provide .1 seconds of delay ).For all intents and purposes the OTA signal is reaching all sets at in your home the same time. OTA signal down RG6 cable is travelling at a significant portion of the speed of light (~66%). The speed of light being 300,000km/sec or 186,000mi/secEven in 0.00001 of a second (much much much less what you can perceive), your OTA signal has travelled ~2km or ~1.25 miles down your cable.Even using identical boxes is not foolproof as if they are connected to different sets, they will be buffered for different lengths of time for image and audio processing.[/QUOTE]

[QUOTE="nbound-au, post: 102586, member: 12875"]Fringe reception is correct about the echo, the time for cable propagation is tiny, it is imperceptibly short. The time for processing is much larger but even it only makes a small difference, what you are hearing is that some TVs maintain a larger memory buffer of the incoming stream (if different models) and/or also that the the distance the sound has to travel through the air the distance between your two TVs (all else being equal). The speed of sound is perceptible over relatively short distances (343m will provide a [I]full[/I] second of delay, 34m will provide .1 seconds of delay ). For all intents and purposes the OTA signal is reaching all sets at in your home the same time. OTA signal down RG6 cable is travelling at a significant portion of the speed of light (~66%). The speed of light being 300,000km/sec or 186,000mi/sec Even in 0.00001 of a second (much much much less what you can perceive), your OTA signal has travelled ~2km or ~1.25 miles down your cable. Even using identical boxes is not foolproof as if they are connected to different sets, they will be buffered for different lengths of time for image and audio processing.[/QUOTE]

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