Originally Posted by chefwong
Good *high speed cables* is good high speed cables, unless I am amiss on the requirements for 4K/HDR displays ?
All of the displays in the household are plasma with the sole exception of the one by the kitchen , which is LCD. Planning on replacing two of them to 4K OLEDS, just to see what the ~fuzz~ is all about with HDR 4K content.
The interconnects in the wall between *plates* are probably all BJC ? A wild guess on the HDMI cables from wallplate to receiver, equipment is proabably a mix of BJC and Amazon "high speed" cables and maybe a couple of Canare hdmi cables I used as jumpers, that I picked up on a whim while picking up supplies.
So, with the upgrade of the 4K displays, how picky is ~older vs newer cables~ going to be. In my readings of review online, seems like such a crapshoot between all brands X brand cables did not work with our ATV4K, but X brand did. Same verbose comments with Xbox, etc.
If the current cables display video, and video does not jitter, should I presume I am good to go ?
Rule of thumb for 4k HDR (Dobly Vision, HDR10, HLG) is this:
For runs up to about 20', Premium High Speed HDMI cables (QR label) will work just fine. The Premium label means that they were tested and certified by an ATC, which is a testing program designed and implemented by HDMI.org using standardized testing procedures. The QR label ensures authenticity. That is not a 100% guarantee that the cable will work for all setups but at least the consumer knows that the cable met ALL of the HDMI 2.0 hardware requirements as set forth by HDMI.org. Any cable mfr can submit their cables to an ATC for certification so you are not dependent on one or two cable mfrs. Just look for the name Premium High Speed HDMI cable and make sure it comes with the QR label for authenticity.
For runs over 20' a hybrid fiber cable from someone like Ruipro seems to be the most reliable. They are active cables so they can not be certified by HDMI.org as HDMI.org does not allow for active cables to be certified (QR label) by an ATC, at least not yet. They are expensive but work extremely well for those long runs.
4k HDR is very picky about its connections. The best and most reliable connection is a single cable, source to sink, with no switches, wall plates, extenders, etc in-between. They can work but they can also introduce issues due to the nature of 4k HDR and its demands. If your cable run is in-wall the the use of a 1.5" - 2.0" conduit is highly recommended and is truly the ONLY way to future proof your cabling as it is very likely that you will be needing to upgrade your cabling as the video standards become more demanding (fully compliant HDMI 2.1 for example). The use of a conduit makes upgrading your cable so much easier and safer, especially if you have also installed a pull string. Bend radius can adversely affect the signal so with the use of a conduit it is much easier to control that. If your cabling is easily accessible, then using a conduit may not be necessary.
I have two HTS's. An older LCD-based system and a new OLED-based system. Both with a 5.1 audio system. I've used BJC Premium High Speed HDMI cables with both and have had zero issues. One system (LCD) has an ATV4 and a blu-ray player as my external devices and the other system (OLED) has an ATV4k and a UHD-BD player as external devices. I've had zero issues with either one using the BJC cables and have been currently testing the Ruipro4k hybrid fiber cables on the OLED system. The performance for both cable types has been the same.
There are other factors involved in a successful connection other than the data path (cable). Cable length, bend radius, devices with the same HDMI hardware versions, etc. The cable just connects the devices, it can not improve pq. You either get the signal with no sparkles, dropouts, etc or you don't. Cable mfrs, imo, border on providing misleading information with their specifications and product descriptions. They all say their cables are the best based on this and that. Marketing b.s. with lots of smoke and mirrors.
The bottom line is that no one can give you an absolute guarantee that their cables with gold connectors, oxygen-free copper,
etc. will give you superior pq and will always work. You can't make reds any redder or greens any greener. It's still going to be trial and error. Cable technology will always lag behind video technology. It's getting better but it's still not there yet. If you already have cables installed in-wall they are probably fine for 1080p but you may have issues with 4k HDR and beyond due to cable type, length, etc. "Good" HDMI cables is a relative term because there are lots of counterfeit and cheap cables out there with great sounding product descriptions.