> Wrong.  40k max.  Assume the pot is wired from a pair of stiff sources
> (Vcc/Vdd and GND for example).  Worst case (highest impedance) will be
> with the wiper at mid-range.  Thats two 20k resistors in parallel for an
> equivalent wiper (input) impedance of 10k (as recommended in the data
> sheets).  Of course, I haven't seen a lot of 40k pots advertised lately
> (25k is a standard) so in that sense, maybe you are (approximately)
> right.

Oh, yeah, duh!  I made the same mistake in an earlier post.


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