Yes.
Oh, you mean you wanted an explanation??? sheesh...😀
At 20 hz, the ground return for the IC is the line cord safety ground, it is NOT the IC shield.
How many people run an unshielded interconnect wire and trust the line cord safety ground to prevent hum and coupling??
How many people realize that this is effectively what is being done in unbalanced systems?
A coaxial cable cannot prevent signal intrusion if the net cable current is non-zero. It will have an external field as a result of signal, and it will receive signal as a result of external fields coupling into it. The geometric structure by itself is insufficient to shield, the currents MUST be controlled.
Cheers, John
Last edited:
maybe years and years of scientific tests proving that bias is inherent to all of us. Its just common sense and its the reason they use placebos in drug testing all the time.
You were obviously using the wrong wires, internal, external, or both. Using "good" wires would have made a dramatic, stupendous difference/improvement. Wife would have heard it immediately, etc, etc.
Since known measurements tell us nothing (yet) as to wire "sound" , why did you assume that measurements would tell you anything about loudspeaker sound??
Why didn't you use the alchemist/tinker method you use with your amplifier designs, randomly inserting widgets in the circuit and "just listening"?
Didn't "trust your ears" to guide the (loudspeaker) design process?
How could such tests be done on all of us? This is quite a significant misunderstanding of the scientific method - science can prove nothing.
They use placebos because the vast majority of people are sensitive to subconscious suggestion. But that's a much more conservative observation than claiming that there are no exceptions as Charles Darwin has done.
Last edited:
😀
John was trying to make a (IMO mistaken) point about measurements by claiming that he had a complete suite of speaker measurements indicating near-perfection, but that the speakers "sounded bad." He then demanded to know, "What's missing?" So, it makes sense for him to provide the measurements, otherwise someone cynical might think that he's either making it up, knows very well what the problem was, or is just trying to score debating points without contributing "meat." If he was sincere, then it's a great opportunity for education- correlating measurements with perception is one of the most fascinating aspects of audio engineering, at least to us measurement geeks.
And audiophiles are not part of a vast majority, they are special, they can hear cables...
There's a ton of documented studies about that out there. But I guess you would want us to present links etc for you? 😉
jd
You could if you want, but it won't help. This is 'Black Swan' stuff - no quantity of studies that find people are susceptible to subconscious suggestion will reach far enough to support the original claim that everyone is susceptible to it. They'll just show that all the people sampled were susceptible to it, and that I already accept.
You had 13292 posts to prove something but obviously something went wrong 🙂 Do a writeup and I'll read it. Or show some measurements that prove how "significantly" the signal is altered by a 2 ft cheapo cable when compared to "the best" 2 ft audiophile cable made out of unobtanium.
ah, you are being very picky on the "everyone".
So after 50+ years of testing, probably 1 million tests and 1 billion different participants around the world, all having concluded that there is a 100% statistical correlation.
You will still argue that it isnt "everyone", hehe I like it 😀
That's like saying you don't believe that all people are born with 2 feet, because you haven't seen them all.
And yes, their may be a few that have the bad luck to be born with one or three feet, but that's immaterial for the discussion at hand, isn't it?
jd
I'm just taking Charles Darwin's words at face value. If that's being very picky then yep, I'm being very picky🙂
I doubt very much that anywhere near 1billion people have taken part. But lets say you were right, that's still less than 1/6th of the total population of earth. And the original context wasn't drug placebo trials.
Yep😛
Aha, no that's false reasoning there. I'm not making any claims about my own beliefs here - I'm rather exploring the basis for someone else's claim, which was not presented as his belief but dressed up as a fact. If he'd said 'I believe that no-one is exempt from subconscious suggestion' I'd take no notice - people's beliefs in general don't much interest me. So no, the boot is firmly on the other foot 😀
That depends.
First, not all audio gear has a line cord safety ground.
Second, in many cases, the equipment's signal reference ground is isolated from the line cord safety ground.
Third, in instances where it's not, the IC shield and the line cord safety ground are effectively in parallel, so the IC shield will share some of the return current.
se
- Status
- Not open for further replies.