Switches & Repeaters

13 Comments on RedMere Active HDMI Cables

    • This is a legitimate concern. There are a couple of schools of thought depending on how far of a run you need to make. One, if you’re really concerned with lightning, etc, then you could run an optical HDMI cable, which has electronics at either end, but not in the cable itself. This way you can replace the electronics on either end of a worst-case scenario occurs. The same works with a Cat5X balun system, however the newest products in both categories likely don’t quite have what it takes to handle the bandwidth requirements for all 4K applications, so you might need to wait on this if it’s a concern. Check out this article for some issues you want to be aware of when installing something that’s more or less “future-proof”: HDMI 2.0 Balun Technology.

  1. TradesmanNow

    This is very helpful info. I have to a run a HDMI cable 15m in the office and I need it to be 100% reliable. I’m going to look into picking one of these up.

  2. Christopher Fox

    I have heard some concerns about “daisy-chaining” active cables, and not to do so. Does this mean not using an active one from STB to Receiver, then from Receiver to TV, or do they mean actually using them with extensions?

  3. Lou F

    That was a good, non-hyped write-up. The only thing it didn’t cover, which I thought I knew about at some point in time, was the rated maximum length. Yes the technology can provide better quality signal, but also, what maximum length can it provide at standard rated quality? As if that isn’t an exceptional anyway.

  4. KMcCMedia

    So, there is a hidden problem with some (perhaps most) active cables. That is an issue with getting adequate power from all sources. I began using them in classrooms, where they fed HDBaseT extenders. They were chosen because of their thinness and physical flexibility; which make them ideal for connecting directly or through adapters.

    We have run into many situations where laptops and portable devices would not connect through their HDMI ports (MacBooks are a major culprit) yet work perfectly through an adapter when a DisplayPort or mini-DisplayPort is available. The conclusion that a number of tech’s have come around to is that; many portables are optimizing their HDMI port to preserve battery life and thus cheating on milliamperes wherever possible. It seems that DisplayPort and Thunderbolt may be less likely to cheat and are thus better in the case of being able to power active cables.

    Just a heads-up to those who want to use active cables. We are in the process of getting rid of them in any situations where we cannot control what will use them to feed our systems. Personally I still like them at home, I just try to be aware of how I am feeding them. Definitely in an environment where a wide range of devices will connect through them; not such a good idea.

  5. Amaroq

    Writing this in 2019… Are there any specific Active HDMI and/or DisplayPort cables which you would personally recommend for maximum reliability in a home office setup? Preferably not too expensive.

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