Originally Posted by Superslim
Thanks for your help BTW
As a plan C I have been looking at 20m fibre HDMI cables and have no experience but I'm getting the feeling there is a Monster cable thing going off. You know the one where you can buy stupidly expensive cables that perform no better than a decent reasonably priced set or certainly not proportionally so.
Atzebe 20m standard 18 Gbps - £60.00
Supra 20m Boast 20 Gbps - £420.00
Kramer 20m £160.00 but only 10.2 Gbps - How can this be I thought HDMI 2.0 standard was 18 Mbps (Though it doesn't actually say HDMI 2.0 but claims all the other specs)
So will all of these cables work in my application and the £420.00 cable all the Monster hype, will a speed of 10.2 Mbps be ok for 4k at 60 FPS and HDR over 20m ?
Will the £60.00 be just as good as it claims all the specs ?
Have you confirmed that the Cable is not performing as hoped? In other words, if the Projector is the only device plugged into the Marantz's HDMI out (nothing in the other), playing 4k/HDR content, there are still problems present? If so, then the Cable is likely the problem, as it so often is.
If that's the case, and you need to replace it, things get a little more difficult for lengths greater than 25' or so. Your 13m one, at 40 feet or so, would be in this category.
I agree, some companies charge way too much money for cables that will perform no differently from cheaper cables. IMHO, Monster often falls into this category.
At lengths longer than 20-25', you need to have either fiber-optic, or one that formally carries the "Certified Premium" logo. I'm aware of 2 options here (there may be others, but these get the most mentions on the forum):
Monoprice Certified Premium Cable
This can also be purchased through Amazon
But as far as I can see, 30' is the longest option here, and likely will not be long enough for you based on what you've written.
The other option is Fiber-optic. Ruipro is one that is frequently mentioned, and I can't recall a single time where it hasn't gotten the job done (other than perhaps the occasional defective unit, which they would replace):
Ruipro 50' Fiber-optic Cable
This is more expensive, but not exorbitant, and if you need something reliable, at that length, it should get the job done.
There is a very long thread on AVS dedicated to HDMI Cable issues which you can find through a search, and perhaps there are other options mentioned there.
As for the brands you mentioned, I am not familiar with them in the U.S., and can't speak to whether or not they would work. If they don't have the "Certified Premium" logo (or I guess the U.K. equivalent, if it exists), then I'd be cautious.
Keep us posted!