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This is a good discussion, very interesting. Steve, from an inductive reactance perspective, which cable type is more suitable as interconnects, coax or twisted pair?
Results show regardless if the loop wires are twisted or untwisted detection is not affected. Furthermore, the test results show that no “canceling of the EMFs” (Electromagnetic Fields) are taking place.
Steve, thanks for the detailed response.
Your welcom Rotarius. A couple of decades ago, I assumed all ICs "sounded" the same, except for capacitance. After reading some comments that they "sounded different", I decided to perform my own experiments.
I think you misunderstand. Those links are not all about RF, but shows the impedance rise that occurs when a coax/transmission line deals with audio frequencies vs RF frequencies. * * * * * * * * * *Once again those are "Radio Frequency Characteristic Impedance" values and how they go bananas when you get down below 100 kHz.
The LF curves (yellow) use expressions with the fixed limiting values of Rc and Lc and are therefore accurate for f < ~ 20 kHz. http://www.jensign.com/RG58U/index.html
For an unbalanced interconnect, the problem is Common Impedance Coupling noise. CIC noise is all about 60 hZ and it's low harmonics. For all practicable purposes in a coax cable,the DC resistance, 60 hZ AC resistance and 60 hZ impedance of the shield end-to-end are all the same. The Ohm-meter scale on DMM will give you, way more accuracy than you need.
Over the past few months I've made some Belden 8402 and 8412 ICs using the Switchcraft black/gold RCAs and I can't tell a difference in the two cables. I really do like these ICs and have found them to provide good imaging, detail and frequency extension. Clarity is a word that comes to mind when I use them. They seem to sort out complex music passages very well. They are flexible, robust and quiet. The RCA connectors are well made and fit their respective jacks perfectly. So far, I can't find a reason to fault them. I noticed a post here tonight stating that the shield should be connected on both ends to get better lower mid response. I haven't tried that yet with the homemade cables as the shield on mine are only connected on the upstream end. I do have an assembled pair from Best-Tronics connected on both ends and will compare the two soon to see if I can tell a difference.
Yes definitely compare with shields connected. Shouldn't be subtle.
I made my own and did connect the shielding at both ends.
FYI, I found the Belden 8422 to be a great alternative to the 8402/8412 wire. Lower capacitance, PE insulation and a tad tighter in the bass in my system.
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