RS Needs a Passive 50/60 Hz Audio Notch Filter

Helmet, kneepads and jockstrap are within reach...

My comment on the shit storm a moderator is trying to initiate:

Prior to the cosmic alignment in the 60's and before the birth of true hi-fi, mains hum was acceptable - then the transformation occured and most of western humainity underwent a change to their audio circuits - this particularly influenced those born on or after the pluto cusp.

The false dawn of aquarius also 'froze' the psychotropic effects of equipment built before this dawn, so that flaws like hum etc which the transformation made unnaceptable, would remain acceptable for the sounds coming from such stuff.. The further the timeline from this dawn, the more acceptable these flaws sounded, so something built in the 30's had 30 od years of "immunity".

This is why crap equipment that buzzes and hums but was made made before the 60's can sound great, but if you were to produce the same equipment now it would be laughed at.

Sadly, a new cosmic alignment actually made matters worse - The hi-fi of the '60s has been replaced by digital rubbish that reflects the true character of our false age of aquarious - Cold, harsh, clear digital "clarity" that is based on desception of our processing.

Those born on the cusp suffer from this more perhaps than they suffer from modern hum

Oh, this is a misunderstanding! I didn't try to initiate a shit storm, I rather feared that I would become the target of it.

Thus I'm very grateful for your well thought and formulated reply, Fred. You are most probably right, I'm in a certain way a "fossil". But I think that you agree with me that the warm pre-sixties tube hum is completely different from the cheap seventies hum, the latter mostly due to cheap power supply design without taking into account the sharper bend in the U/I curve of silicon rectifiers...

"But I think that you agree with me that the warm pre-sixties tube hum is completely different from the cheap seventies hum, the latter mostly due to cheap power supply design without taking into account the sharper bend in the U/I curve of silicon rectifiers..." _ Thierry

This may well be the case - I do agree that tube hum coming from any post-cosmic-alignment equipment sounds more horrible than that from pre-cosmic-alignment stuff, and that the cheap 70's stuff (which was made after the psychotropic peak) tends to sound most horrible..

How much of the above is due to cosmic influences and how much is based on sound science, I cannot say - At the time I was a young ignoramus,  my church prevented me from exploring the new-age wonders and astrological reasons for these, and my technical understanding was insufficient for me to appreciate the tubes that I could pick up for a fraction of the price I had to pay for the upcoming transistors (particularly silicon ones! ;-)

Fred.