On 10/01/2010 14:55, TonyL wrote:
Keith Garratt wrote:


Yes, but for all that I've had fun in the past by slowly rotating
speakers while people listened with their eyes shut and they were
never sure if they could hear any difference, even when the speaker
was completely reversed!


That's odd because I can detect somebody walking across the room with my
eyes closed when my system is playing. This is despite the fact that my
hearing is getting older....HF cutoff is now significant above 12 kHz...used
to be good for 16kHz.




OK, my wording is poor - the experiments with other people were turning
only one speaker - very slowly, taking about a minute to reverse the
speaker. But your comment reminds me that there were comments like 'are
you standing in front of the speaker' but the big thing was that nobody
(what? three different people I can remember) thought there was anything
at all wrong when the speaker was all the way round!

Try it yourself if you can find a willing subject - maybe it's just
'sloppy listening'!!

On my own I have reversed both speakers a number of times in the past
without getting the impression the sound had significantly deteriorated!
I don't get the 'sweet spot' thing - the speakers I am listening to
right now usually seem to get louder the further I move away from them!!