On Sun, 10 Jan 2010 17:00:34 +0000, Keith Garratt
wrote:

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!!

"Sweet spot" is about the stereo image, not volume. And it's
generally reckoned to be a lot to do with how tightly hf beams from
the speaker.