RE: PCOCC Direction - with pictures!

Posted by Cpk (A) on April 22, 2012 at 09:26:10

In Reply to: PCOCC Direction posted by John V on April 12, 2012 at 23:24:38:

Above are two pictures of the surface of UPOCC wire as seen through a USB microscope at around 800x (perhaps a little generous by microscope mfg.) The directionality of the wire is going from the bottom to the top of the picture.

Directionality of solid core wire is due to the micro-abrasions left by the dies the last time it was pulled through. Going with those abrasions, to my ear sounds better than going against them. Going against them reduces high frequency information and soundstage height. This is easiest to hear in the decay of reverberation in a given recording; the wrong way and that reverberation will still be there but it will be stunted. As the highest frequencies travel closest to the surface of the wire this effect is understandable.

If you read through enough of Crump's posts you'll see that he alluded to this and I am sure he would have loved to have a USB microscope to play with.

Until I have a larger sample set and a better scope I still determine directionality by ear primarily and use the microscope as confirmation.

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Follow Ups Full Thread

Topic - PCOCC Direction - John V 23:24:38 04/12/12 (20)

RE: PCOCC Direction - with pictures! - Cpk 09:26:10 04/22/12 (4)

RE: PCOCC Direction - with pictures! - unclestu 12:56:08 04/23/12 (1)

RE: PCOCC Direction - with pictures! - Cpk 14:03:20 04/23/12 (0)

RE: PCOCC Direction - with pictures! - John V 16:03:50 04/22/12 (1)

RE: PCOCC Direction - with pictures! - Cpk 18:34:52 04/22/12 (0)

All single strand wires have directionality.....important! - Ric Schultz 12:56:40 04/19/12 (1)

RE: All single strand wires have directionality.....important! - John V 21:40:14 04/19/12 (0)

RE: PCOCC Direction - Duster 11:18:48 04/14/12 (4)

RE: PCOCC Direction - John V 23:10:39 04/14/12 (3)

RE: PCOCC Direction - unclestu 13:11:01 04/16/12 (0)

I believe your suppliers are correct - madisonears 12:40:25 04/15/12 (0)

RE: PCOCC Direction - Duster 07:49:51 04/15/12 (0)

IIRC, cable has direction if and only if ground/shield/drain are assymetrical - Jay Buridan 09:45:19 04/13/12 (6)

RE: IIRC, cable has direction if and only if ground/shield/drain are assymetrical - John V 14:56:14 04/18/12 (0)

RE: cable has direction if and only if ground/shield/drain are assymetrical - unclestu 13:00:35 04/13/12 (4)

RE: cable has direction if and only if ground/shield/drain are assymetrical - John V 14:51:07 04/18/12 (0)

This is also most likely why direction of a fuse matters. - carcass93 06:59:13 04/14/12 (0)

I like Acoustic Zen OCC, both silver and copper - Jay Buridan 15:28:54 04/13/12 (1)

RE: I like Acoustic Zen OCC, both silver and copper - unclestu 17:56:55 04/13/12 (0)

RE: PCOCC Direction - mt10425 07:00:51 04/13/12 (0)

Follow Ups

RE: PCOCC Direction - with pictures! - Cpk 09:26:10 04/22/12 (4)

RE: PCOCC Direction - with pictures! - unclestu 12:56:08 04/23/12 (1)

RE: PCOCC Direction - with pictures! - Cpk 14:03:20 04/23/12 (0)

RE: PCOCC Direction - with pictures! - John V 16:03:50 04/22/12 (1)

RE: PCOCC Direction - with pictures! - Cpk 18:34:52 04/22/12 (0)

RE: PCOCC Direction - with pictures!

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