[sdiy] Xfade

[Paul Perry]

The key to a single pot crossfade, is to have the wiper go to ground, so you 
are (at the extremes) grounding out one or other of the inputs.
A passive example: http://midimagic.sgc-hosting.com/encodmxl.htm

paul perry Melbourne Australia


----- Original Message ----- > I'm having a hard time finding crossfader 
schematics. Anyone out there
> have any schematics or resource suggestions?
> I want a true RMS crossfade with a -3dB midpoint.I will be fading
> between two synth level signals (around 10V pk-pk).
> The catch is that I would like to achieve this without using a dual
> ganged pot and without making the circuit overly complicated (like
> basing it on two VCAs). I have a feeling these two requirements may be
> mutually exclusive.