Nothing to forgive ... he managed to nail both the generation and the competence issues in one link... listening now.
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Douglas, allow me to play devil's advocate and say that spending thousands of dollars/pounds/euros etc. on the likes of cables is a positive thing.
The people who engage in this pursuit obviously have too much money in the bank, and it is only fair to the rest of society that they engage in the redistribution of their wealth.
After all, the poor manufacturers, retailers and their families all have mouths to be fed! 😉
The people who engage in this pursuit obviously have too much money in the bank, and it is only fair to the rest of society that they engage in the redistribution of their wealth.
After all, the poor manufacturers, retailers and their families all have mouths to be fed! 😉
Yet another one ... This time from Furman Power
So, what's wrong with this?
Hint: How much of the AC cycle does a power supply actually use?
Hint2: What is the frequency response of a typical power transformer?
So, what's wrong with this?
Hint: How much of the AC cycle does a power supply actually use?
Hint2: What is the frequency response of a typical power transformer?
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All I know is that S-video refers to a method of analog video signal transfer.
Presumably the analog video signals are of high frequency and an S-video cable is quite capable of transferring them without loss.
Is that the flaw in the argument?
Yep. S-Video used 3 standard RCA cables to transfer the picture and sound. Most RCA patch cords can handle signals up to several megahertz in bandwidth and will transfer video reasonably well.
The deception to sell expensive cables lies in the article failing to mention at what frequencies the dreaded capacity effects become significant.... well above and away from Audio frequencies.
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You can't beat a good quiz!
The part of the AC cycle used is the part where the current pulse tops up the reservoir capacitor - as shown in the attachment.
Asymmetrical or what?
Attachments
You're close... but it's not about symmetry... it's about conduction angles. The diodes are conducting for only a tiny portion of the AC cycle... any noise in the rest of the cycle (when not conducting) is ignored. So with a conduction angle of say 10% of the cycle, you get a concomitant 90% noise reduction.
For the second hint... Most old school transformers are very inductive and seldom get over 150 or 200hz without significant reductions in output. So any noise above the transformer's range is going to be attenuated.
The marketing deception lies in painting a picture of all this noise somehow getting into the signal path of an amplifier, when in fact it seldom gets past the first rectifier.
How about the one in message #71?
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Lol no, output of 10 VAC transformer below. And all bets are off when interwinding leakage enters the picture.
DHT AC Filament Noise
You're raising discussions that have been active since before the Internet was opened to the public. Possibly since Arpanet.
Nah - not sure what they were blathering on about - maybe I'm an ideal candidate for buying their cables? 😀
My take is that audio signals are alternating voltages. The cable's job is to allow these alternating voltages to be transferred from source to destination with minimal loss.
The only directionality would be to ensure that the single connected end of the screen was at the source end of the cable?
Am I anywhere near getting a prize yet?
Correct. AC current flows in both directions, alternately. If the conductors were directional, as they claim, then no matter how you hook it up, one direction would be affected... causing considerable distortion. But seriously, it's just wire and wire doesn't much care which way things are flowing.
So the marketing lie is that directional conductors are A) possible and B) better.
I don't know about a prize, but I do hope people are learning from this... Simple... They're lying to you. But, without at least some minor basis in actual science people are never going to spot the marketing BS. People really do need to educate themselves.
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And probably before that too. I recall having these discussions in my music club way back in the 1970s... The fact that this crap is still out there, stronger than ever points to a real problem in our hobby. Sadly the overall observation is that people appear to be getting dumber, and more gullible, by the day.
It's getting harder to find accurate information as well Yet another basic question
BTW did you look at my other thread? 🙂
I think you mean component video, that’s the one that uses the 3 pretty colored rca.
S video is Single.....one connector, 4 pin
S-Video - Wikipedia
Edit...... and the 3 colored cables did not carry sound, there were standard red/black rca besides.
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That is an artifact of all the concocto-science these guys are pumping into the realm of real information. I've pointed out a few of the clever lies here, there are tons more of them. The overall effect is the same as fake news... after a while one does not know what to believe.
That, BTW, is why I carry a link to REAL electronic theory in my signature space. At least people can have one source of actual information that isn't polluted to the rim with marketing hype and omissive rhetoric.
But a really good guideline is to look at where the information is coming from... if it's from some salesmaker or company who's going to profit from it, you should be duly suspicious of it.
It's a long read and, as you might have noticed I've been a little busy.
But, yes ... the questions do seem to be getting more and more basic over time.
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If I got the name of it wrong, I apologize. My bad.
I was picturing the red/white/yellow cable sets, which used composite video then stereo right and left audio. The yellow video cable in that method was just an audio cable. The point was that ordinary audio RCA cables can easily carry video and the capacitor effects the web-quote was lying about were not significant enough to have any effect at audio frequencies. Note that the article I quoted carefully avoided mentioning frequencies at all.
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