Pulling Good Analog Sound out of Severe HD "Self Noise"?

[Clark2]

Originally Posted by W9TR

...The easiest test to see if you have HD self noise is to switch your tuner to mono. If the noise goes away in mono, you have HD self noise or the signal you are receiving is not full quieting in stereo anyway. You need about 20 dB more signal strength to get full quieting in stereo vs mono. That's exclusive of HD self noise.

Tom -- Yes, I'm pretty sure I have HD self noise on one station, especially since another station of similar strength (at the tuner) without HD sounds quiet.

But you had seemed to imply (in your earlier post) that good post-detection filtering (or a better stereo decoder?) could compensate for a wide IF pass-band. That was the reason for my question about (2). Did I misunderstand, or can you get rid of the self-noise by post-detection filtering without increasing distortion by using a narrow IF?

The answer to this question would seem important for choosing a tuner to get great analog sound on a station with HD channels... -- Clark2