Then I'll sell it and retire.What if you find a Magic Cable?
Then I'll sell it and retire.What if you find a Magic Cable?
Then I'll sell it and retire.
I wonder if perhaps we can have some folks try the cable flip experiment on their own HiFi systems and see if I am just full of beans or that there is really something to this.
Just a friendly encouragement.
I will see if I can arrange this experiment with some of my friends on their HiFi systems as well. Gotta have a clean head and no distractions I suppose too.
This truly will be interesting.
I am, indeed. In fact, I think it's warm enough now.@mansr are you warming your new Keithley bench meter for some resistance measurements?
I am, indeed. In fact, I think it's warm enough now.
The meter I'm using (Keithley DMM6500) supports 4-wire resistance measurements. For this test, I'm using regular leads with stackable banana plugs connected to a pair of crocodile clips. These are clamped to the centre pins of a cheap 3 m RCA interconnect. Taking 100 consecutive measurements, the average is 494.7 mΩ (random fluctuations make any further digits meaningless). Briefly releasing and reattaching the crocodile clips to the cable and repeating the measurement yields 496.9 mΩ. Swapping the test leads at the meter, the reading (still average of 100) is 496.4 mΩ. Putting the leads back to the original position gives a value of 496.1 mΩ. For some reason, the measured resistance is dropping slowly regardless of the direction. Maybe the meter is still warming up, or maybe the connections are slowly settling due to contact pressure. I'll leave it running for a while and see what happens.
I don't have any of those fancy crocodile clips with separate connections to the jaws, and the RCA connectors are too small to allow attaching more than one of the regular kind. Consequently, the resistance between the cable and the clips is included in the measurement. It's the best I can do with the parts I have at hand.If you're doing a 4 wire, the contact resistance won't matter much, which is the beauty of that kind of setup.
I see. I will set this measurement instrumentation up at some point soon and see what results I get. Thank you all very much.
Just one thing though, Why did it seem to subtly change the sound presentation on my HiFi when the cables were flipped end for end?
Again I ask in a sincere way.
Again, Thank You all for your information.
I am, indeed. In fact, I think it's warm enough now.
The meter I'm using (Keithley DMM6500) supports 4-wire resistance measurements. For this test, I'm using regular leads with stackable banana plugs connected to a pair of crocodile clips. These are clamped to the centre pins of a cheap 3 m RCA interconnect. Taking 100 consecutive measurements, the average is 494.7 mΩ (random fluctuations make any further digits meaningless). Briefly releasing and reattaching the crocodile clips to the cable and repeating the measurement yields 496.9 mΩ. Swapping the test leads at the meter, the reading (still average of 100) is 496.4 mΩ. Putting the leads back to the original position gives a value of 496.1 mΩ. For some reason, the measured resistance is dropping slowly regardless of the direction. Maybe the meter is still warming up, or maybe the connections are slowly settling due to contact pressure. I'll leave it running for a while and see what happens.
The advantage of 4-wire resistance measurement is that the test leads have very little effect on the result. Disturbing the connection to the RCA cable makes a much bigger difference than swapping the leads at the meter. Bear in mind, we're talking about differences of a few milliohms. Interconnects like this are typically used between a DAC or preamp with an output impedance of 100 Ω or so and a (pre)amp with input impedance in the 10 kΩ vicinity (or more). A few mΩ this way or that in between those makes no difference to the end result.Thank You for taking the time to set up a test rig. If you are still testing, may I ask, for the sake of consistency and for at least one constant value in the chain of wires, that the meter leads stay in the same meter hole at all times? Is this possible with your set-up? I am just looking to null out any effect of the meter leads own characteristics. Just a thought.
I am just looking to null out any effect of the meter leads own characteristics. Just a thought.
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Another comrade joins us! Welcome!I've been lurking on this site for about a year and this thread finally made me create an account.
Another comrade joins us! Welcome!
And yes, like you, I am utterly disgusted by this shameless and unabashed BS used to peddle snake oil.
So about the same difference as 4" of cable. Does it make a (measurable) difference whether zip cord is lying flat on the floor or on its edge with one conductor above the other?There was a link posted here to some measurements on cable lifters, well I repeated this test on a 20' length of Monster #10 zip cord. The capacitance measured 430pF on the floor (usual oak/ underlayment) and 423pF in free air. The difference was repeatable but trivial no basis for any "dramatic" audible difference. Wood actually has a high dielectric constant so the fringing field on zip cord would have an expected increase but as measured it's almost in the noise.
So about the same difference as 4" of cable. Does it make a (measurable) difference whether zip cord is lying flat on the floor or on its edge with one conductor above the other?