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944 posts

Ultimate Geek

#231807 14-Mar-2018 13:09
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I'm building a house, and I'm, having some HDMI cables run up the wall for a TV, and I specified that I would provide as I want to make sure  the cables are going to be a as future proofed as I can get. What are some good options for good quality HDMI cables that are 4K HDR 60Hz capable that are reasonably priced? Anybody have any experience in the Dynamix brand? I'm probably after 2 or 3m length cables.

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1031 posts

Uber Geek


  #1976471 14-Mar-2018 13:22
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Was going to say Kramer but they seem to be hard to find in NZ.


I have had poor experience with Dynamix in wall however they were probably run too close to power

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Master Geek

  #1976489 14-Mar-2018 13:45
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You will need "48G" cables to meet the HDMI 2.1 spec.




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Ultimate Geek

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  #1976505 14-Mar-2018 14:12
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You will need "48G" cables to meet the HDMI 2.1 spec.


As I understand it can’t actually exist as the spec/certificatIon specs don’t currently exist.

I installed the following cable in the wall

BJC Series-1 Belden Bonded-Pair HDMI Cable

What ever you install be sure to install draw wires to replace it if required.

247 posts

Master Geek

  #1978853 16-Mar-2018 20:43
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I quote the quote of the quote


I have a HDMI cable which has just stopped playing the right colours so I swapped it for another.

My Question is do you need more expensive ones or something like $5.00 ones from say the Warehouse?

To connect PS3,Panasonic DVD recorder,Apple TV and Intel Nuc through a Yamaha RX-840 finally to An LG smart TV.

I have always used the cheap ones just curios with anyone's experience.

I'll quote myself from another thread below that explains some of the reasoning behind requirements.
I'll add that it really comes down to the quality control of manufacture and quality of the components than the actual price.
For 4k+HDR signals and greater than 4~5m length I'd recommend active cables.
For relatively shorter lengths just a reasonably constructed cable is good.
I have been using Dynamix cables from Jaycar with no real dramas.

Also note cables can expire from use, contacts get dirty, moisture ingress, overuse breakdown. Gaming console cables can get overuse from being constantly plugged in and out and moved around. Smoking, cooking oils and tar can ruin contacts.

Most HDMI 1.4 devices are limited to 9~10.2Gbps and in some cases lower.

1080p24 @8bit 4:4:4 = 2.23Gbps

If you struggle with this, lower settings 1080i, 720p or even 576i to get a signal then step up one level at a time until it fails then drop back one setting. That then is the device/cable transport limit. Note: some DVD/BD players amp up the signal more than others at the risk of swamping the HDMI cable.

If you struggle to do this over any connection you are in trouble for anything related to 4k or HDMI 2.0a~2.1

2160@24 8bit 4:4:4 = 8.91Gbps

A lot of people should be able to do basic 4k as above with short/medium cables and transitional 4k devices.

2160@24 10bit 4:4:4 = 11.14Gbps
2160@24 12bit 4:4:4 = 13.36Gbps

This is where people will start having issues when they raise bit depth to 10bit/12bit, this will be the default future for 4k +HDR as 8bit is just not good enough.

2160@50/60 8bit 4:4:4 = 17.82Gbps

So you want 60fps, you drop to 8bit but probably overwhelm your systems.
8 bit is not the way to go.

You are better off setting this

2160@24 10bit 4:4:4 = 11.14Gbps
2160@50/60 10bit 4:2:0 = 11.14Gbps

I'd argue that the 24hz would be better on a modern display that ups the Hz.
this does depend on the source material and what it is as default.

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Uber Geek

  #1978855 16-Mar-2018 20:54
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Can you not put a conduit and draw wire?

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Uber Geek


  #1978857 16-Mar-2018 21:04
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I thought my cables were fine till I put a xbox one x on the end and tried pushing HDR over it. Desktop PC doing 4k 60 8 bit worked fine. Xbox is a sparklefest. No way I could have known when I got the cable so Im glad I am lazy and it was just stuffed around the side of the room behind furniture and not up the wall and across the loft.


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Master Geek

  #1978945 17-Mar-2018 08:55
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Also 4k HDR gaming at 60FPS will not work over HDMI 2.0. If you going hook at a HTPC to it, Why did they not add a display port on these TV who knows?

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