On 06 Nov 2004 15:15:40 GMT, ohawker (Andy
Evans) wrote:

To resolve, employ suitable measurements. Otherwise we (including you) have no
real idea if the effects you describe have anything to do with the 'causes' you
assume.

Hello Jim - I'm open minded - my assumption is that it's to do with resonance,
I suppose, but I've been very clear in saying I don't understand how this
happens. I'm not in a position to measure, so my next step is to find others
who have observed similar things and others who can offer some kind of
explanation based on their own empirical knowledge. Andy

Actually, your assumption is that there *is* a real effect.
--

Stewart Pinkerton | Music is Art - Audio is Engineering