This was from SteveJ
I had the 7200SE's demonstrated at Martin's Hi-fi yesterday by Chris from Meridian (very impressed with the speakers). I asked him about EBA latency.
He said it varies depending on the speakers, with the greatest values (he thought around 21 ms) for the ported designs - i.e. 5200 and 7200.
He also said that the EBA-enabled processors (G65, 861v8) would compensate for the different latencies between EBA speakers, non EBA DSP speakers and analogue. So you could mix all three types if you wanted (but obviously you would only get the full benefit of EBA if all speakers support it).
Steve