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In Reply to: RE: Clark Johnsen pretty much started it all posted by hifitommy on August 28, 2014 at 21:21:41
The difference I've found is that Clark Johnsen pretty much knows what he's talking about.
Follow Ups:
So, Dave - what's your take on his belief that you have to get mains polarity right first (in terms of getting the correct ends of the primary winding connected to mains active / mains neutral), as a pre-requisite for picking out absolute polarity?
Makes sense to me. :-))
Andy
are you pulling my leg or not?
I'm really too technically illiterate to know.
What I do know is that I'm cursed with being able to tell, in many or most cases, whether a recording is in absolute or inverted polarity -- or just as likely in mixed polarity -- when listening to my Gallo speakers, which (in the words of a Gallo VP) are "extremely sensitive to polarity." Before getting the Gallo Reference 3 speakers in 2004, I couldn't tell at all.
Some people think it's a lot of BS but I'm happy to believe that there is some good thinking here (about mains polarity and the mains transformer primary winding). And as all my equipment nowadays is DIY, I can make sure I get this right! :-))
Regards,
Andy
That's the reason for polarized power plugs these days.
The polarized AC plug has nothing to do with absolute phase or anything even closely related to sonics. It is done to prevent the chassis of the equipment from being connected to the hot side of the AC line. The neutral side of the AC supply is connected to ground at the utility's transformer that supplies your house with AC. A lot of mfr's in the 60s and later, connected the neutral side of the AC cord to the metal chassis to provide grounding (especially on cords that were only 2 prong). If you reverse the plug, the chassis will be "hot", which by itself might not pose a problem, but if you come in contact with the chassis and ground, surprise!
and btw, we in Oz have always had 'polarised' mains plugs/sockets (and an earth).
Yes, the electrician might've wired the outlet correctly and, yes, the active wire connects to the fuse inside the case ... but the mfr might have connected the power transformer primary "the wrong way round"!
Of course, those who suffer from a surfeit of logic say " but it's AC so it can't possibly matter "! :-))
Regards,
Andy
That's a different concern.
Wiring the primary of the power transformer "wrong" won't change the polarity of the sound coming out of the speakers.
On the other hand keeping the ground currents low between components is a good thing.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
But getting the primary winding 'aligned' right seems to assist in picking up absolute phase (according to Clark Johnsen who "wrote the book", anyway).
Regards,
Andy
And I agree.
If proper polarity is going to be heard, having everything else right would help.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
It is my understanding and experience that the simpler the crossover (and best of all, no crsossover at all), the easer it is to detect changes in polarity. That's assuming the speakers are polarity-coherent in the first place.
Newer elecrttical appliances have to be correctly polarized. IIRC it is a EU convention and now universally applicable. Of course older components may not be correctly oriented. On some older units like my original Dynakits, wrong orientation adds a bit of distortion for some reason. That would make seeking polarity harder.
nt
"You can’t know what the “best” is unless you have heard everything, and keep in mind that given individual tastes, there really isn’t any such thing." HP
gonna say that but restraint kept me from it.
...regards...tr
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