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18Gbps HDMI Extenders - Latest and Greatest?

K

Kurvenal

Active member
When I installed my system a couple of years ago, there were no HDMI over ethernet extenders capable of delivering 18Gbps. So after much helpful (and patient) advice from Mike Kobb and two Jims (Cinelife and Peterson of Lumagen), I went with the combination of a Radiance Pro VP and two cables that consistently gave good results with the Kaleidescape HDMI tool: a 10m Ruipro optical cable and a 12m Ethereal MHX passive cable paired with the Ethereal Gigabit accelerator.

Fast forward 18 months, and I am getting occasional video dropouts and the Kaleidescape HDMI tool is intermittently showing noise in my HDMI signal. I also had problems testing my cables with the highest chroma setting on my Apple TV 4K.

So I am wondering if HDMI extenders have finally caught up with the rest of the 4K ecosystem. Last year none of the extenders had chips fast enough to deliver 18Gbps. Has that bottleneck finally been broken?

Am looking for any recommendations based on proven experience and consistent performance delivering a 4K HDR signal.

Many thanks.
 
I use a 15m monoprice fiber between my Lumagen Pro and Projector. Been solid and recommended by many. SJ
 
The fiber HDMI is really the best way to go. Extenders may be able to handle 18gbps, but even CAT6a can’t handle that speed. You can run two CAT6’s but as far as I know, there are no extenders available that except two cable.
 
All the extenders we've seen that support 4:4:4/60 offer "virtually lossless" compression. So no.

I'm running a 120' Celerity Fiber cable with no issues. We've seen some quality issues lately and have switched to AV Pro Edge Bullet Fiber cables with no issues so far.

Kevin D.
 
These work and are recommended by Lumagen for use with their processors and also Kaleidescape gets a mention too.

5 to 50m HDMI via Amazon and others

Ruipro HDMI Fiber Cable Light High Speed Support 18.2 Gbps 4K at 60Hz HDMI 2.0 Subsampling 4:4:4/4:2:2/4:2:0 Slim and Flexible With Optic Technology (50m)
 
Mark H said:
These work and are recommended by Lumagen for use with their processors and also Kaleidescape gets a mention too.

5 to 50m HDMI via Amazon and others

Ruipro HDMI Fiber Cable Light High Speed Support 18.2 Gbps 4K at 60Hz HDMI 2.0 Subsampling 4:4:4/4:2:2/4:2:0 Slim and Flexible With Optic Technology (50m)
Click to expand...

Confirmed. This cable solved all the handshaking problems. I am using the 50ft/15m with no issues since 18 months.
 
Mark H said:
These work and are recommended by Lumagen for use with their processors and also Kaleidescape gets a mention too.

5 to 50m HDMI via Amazon and others

Ruipro HDMI Fiber Cable Light High Speed Support 18.2 Gbps 4K at 60Hz HDMI 2.0 Subsampling 4:4:4/4:2:2/4:2:0 Slim and Flexible With Optic Technology (50m)
Click to expand...

This is actually the cable I am using now. For the most part it works well, but I have had some dropouts recently while playing 4K HDR content and also noticed using the Kaleidescape HDMI tool that I am occasionally getting noise in my HDMI connection.
 
Kurvenal said:
a 10m Ruipro optical cable
Click to expand...

FYI: I purchased 2 RuiPro cables 15 months ago and I recently ran into issues. I contacted Lumagen and we came to the conclusion that my 10m cable has gone bad (my 15m RuiPro cable is still working flawlessly). Got the 10m cable replaced by RuiPro under their 2-year warranty!

Seems like the first thing to expect when HDMI is acting up, is a bad cable...

So, possibly your 10m cable was from the same flawed batch as mine. (I got mine in early March 2017. The 10m cable seemed to be an earlier manufacture than the 15m although I purchased them at the same time).
 
Peter Nielsen said:
FYI: I purchased 2 RuiPro cables 15 months ago and I recently ran into issues. I contacted Lumagen and we came to the conclusion that my 10m cable has gone bad (my 15m RuiPro cable is still working flawlessly). Got the 10m cable replaced by RuiPro under their 2-year warranty!

Seems like the first thing to expect when HDMI is acting up, is a bad cable...

So, possibly your 10m cable was from the same flawed batch as mine. (I got mine in early March 2017. The 10m cable seemed to be an earlier manufacture than the 15m although I purchased them at the same time).
Click to expand...

Very interesting. I also purchased my Ruipro 10m cable in March 2017. I have contacted the seller and explained the issues I am having, and they have agreed to send me a replacement cable. I will be interested to see if I can get the cable to work with my Apple TV when I set the video to 4K HDR (60 Hz) with Chroma at 4:2:2.

Many thanks!
 
Last edited:
I have not personally used them, but two clients have them in their installs, one short (less than 30'), and the other has a 70' run and no issues. The latter purchased his online.

Jim
 
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