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Jitter and 75ohm cable length

I have read a number of papers on how cable length plays a role in Jitter between transport and DAC. After all of the dust settled I arrived at no sound conclusion, on paper, so I decided to use the ears of my 17 year old budding Audiophile to settle this by LISTENING! My transport is a Wadia 171i (WAV/LossLess files)and my DAC is a Cambridge AZURE 840C. I had three cables in my test, my 1M Kimber D-60 illuminations, a 3' HAVE/Canare and a 6' HAVE/Canare. All three cables sounded good, but in the end the victory landed on the 3' HAVE/Canare by a fair margin followed by the Kimber and last the 6'HAVE/Canare. In my readings I came across a number of articles saying you should use at least 1.5M of cable to reduce reflections in the cable so as to not harm the clock signal, yet an RF engineer said this was a bunch of "Bunk" and 1M would be better, in fact he said the shorter the better. So, forgive my verbosity, what are your thoughts and experience in this area? My 3' $25 HAVE/Canare beat up my $390 Kimber, I believe due to proper honest 75ohm terminations vs standard RCA connectors, and as far as length goes, at least in my system, 3' was by far the best. Thanks!
Rpg
rpg
beolab
6 posts
 
Or another alternativ could be to use a true 75 Ohm Canare BNC SDI 12 GHZ UHD video cable, or what is your thaughts about this? 

https://www.bhphotovideo.com/c/product/1338226-REG/canare_cal55cuhd003_12g_sdi_4k_uhd_single_channel...

Or would you choose a more specific word clock cable like Laird with Neutric BNC even if it got vorser specs on paper ? 

https://www.bhphotovideo.com/c/product/1021809-REG/laird_digital_cinema_sd_tcd1_01_sound_devices_bnc...

Or the old but proven Apogee Wide Eye 75 Ohm Canare Cable: 
https://www.amazon.com/Geistnotes-Apogee-Clock-Cable-WE-BB/dp/B01N3AL6WY?th=1&psc=1


Thanks for some guidence before ordering. 




@almarg 
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almarg
9,670 posts
 
@Beolab

Hello Fredrik,

As far as I can tell from the descriptions and specs all of those seem like reasonable choices. However the indication that the Van den Hul cable has a minimum safe bending radius of 70 mm strikes me as a bit worrisome. Also, I’m guessing that it costs a good deal more than the others, while not necessarily providing better performance in your application.

Perhaps a good way to proceed would be to order both of the cables that are sold by B&H, since they cost so little, and determining which one performs best in your system, if in fact there is any difference at all.

Good luck. Regards,
-- Al

beolab
6 posts
 
Thanks for your support and advice, i think the most superior cabel spec wise is the Canare 12 Ghz 4k cable, but the only thing that makes me hesitate is that the cable is optimized for 12 Ghz frequencies when it comes to  video signals.

Will probably buy them all three and see, but i need three of every cable. 
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