On Thu, 13 Nov 2008 11:06:50 -0000 someone who may be "Vortex2"
wrote this:-

I'm especially interested in the noise performance. Surely these things
must produce some kind of 50/100Hz Hum!!!!!!! That would drive me nuts.

One of the manufacturers, Whispergen, recommend installation on a
solid floor in their instructions and recommend not installing in a
kitchen which is also used for dining.



--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54