On Mon, May 30, 2011 at 07:32:52PM +0100, dw wrote:

> At low frequencies this  
> corresponds to the signals being (nearly) 180 out of phase at the  
> speakers until I give up on flogging the speakers to death and swap
> to driving them in phase.

I understand. As frequency goes down more and more energy is
wasted driving the two speakers out of phase to deliver the
right signals at the ears. There has to be a limit to this.

But it's the 'swap to driving them in phase' that puzzels me.
Why no just keep the difference gain at some maximum value, or
even let it drop off as frequency goes down, instead of cross-
fading to driving the speakers in phase ? 

Ciao,

-- 
FA

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