[RFI] DSL Filter Update

[Andy]

>... But even if the wrong source/load impedance is used the shape of the
> passband/stopband will not change - only the overall attenuation.

The source/load impedance do indeed affect the shape.  In the vicinity of
cutoff it changes the Q and you can get peaking or very gradual rolloff with
the wrong impedance.  And the stopband attenuation could be way different.

Andy