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Supra LoRad 2.5 MK II
50.101.76.25 |
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Posted on April 6, 2014 at 17:53:52 | ||
Posts: 18614
Location: Ontario Joined: November 22, 2003 |
Making a DIY cable from this wire (recommended by Duster) which has finally arrived after the initial shipment having gone missing. Anyway stripping back the outer jacket I find instead of a foil shield and almost cloth like (in feel) dark purplish shield that appears to be conductive but no where near as much so as normal foil; I confirmed it was conductive via multi-meter, measuring something around 3K Ohm with probes about 1 cm apart (on the material). There is also a thin 'drain' wire in contact with the shield. Anyway I was surprised by this but looking up pic (Google) it seem to be the correct construction for this wire; apparently the original (non-mk II), had a foil shield. Pic from Google (shield looks black in the photo) ...
Anyway I plan to treat the shield and drain as a normal shield that will be connected at one end only (female connector). Just wanted to throw this out there in case I'm missing something. Any info would be welcome -- More on the shield from what appears to be the US site for Supra: "The biggest differences between Lorad MkII and the old Lorad cable, is that it is now based on SUPRA’s unique Nylon screen concept. Semiconducting Nylon Screen provides improved shielding properties, bending strength, environmental immunity, higher tensile strength and less microphonic effect. The Nylon screen is connected with a drain-wire. We have tested and evaluated all known types of screens for making such a good cable as possible. SUPRA’s semi-conductive Nylon screen was the only one that passed the safety requirements and, moreover, its shielding properties was best in test. LoRad MkII is tested and certified by Intertek Sweden, meeting the European safety regulation HD21.5 S3."
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RE: Supra LoRad 2.5 MK II, posted on April 7, 2014 at 08:51:37 | |
Posts: 18614
Location: Ontario Joined: November 22, 2003 |
You mean they advise connecting the drain/shield at the walll end? I couldn't remember what was normal practice so I checked a DIY design on the VH site before proceedingand it has the shield connected at other end. Source:DIY AC Power Cables - Chris VenHaus (shield is copper braid) All that said I have to admit that shield/drain connected at the wall does seem to make sense to me, i.e. intuitively. Let me know what you think ... I can easily change, no soldering. :) |
RE: Supra LoRad 2.5 MK II, posted on April 7, 2014 at 14:00:47 | |
Posts: 18614
Location: Ontario Joined: November 22, 2003 |
Thanks
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RE: Supra LoRad 2.5 MK II, posted on April 9, 2014 at 12:57:14 | |
Posts: 141
Joined: November 2, 2013 |
Where in USA/Canada is this cable available in bulk? |
RE: Supra LoRad 2.5 MK II, posted on April 10, 2014 at 06:01:13 | |
Posts: 141
Joined: November 2, 2013 |
Thanks. I noticed Madisound carries it as well - not sure if it's the Mk II version though. |