[sdiy] RE: cross-fades (was ...)

[David G. Dixon]

>> Can't you just feed the two signals into either ends of a pot and  
>> grab the result from the wiper?

> This only works if the two source impedances are zero.  Otherwise
> you'll never completely select one or the other source at the ends 
> of pot travel.

...so this means the signals should be sent through followers first, right?
So, effective (manual) cross-fader = 1 TL072 + 1 Pot...?