Active vs Passive HDMI | The Technology Land

There are no HDMI test specifications for active or passive HDMI. Instead, they’re terms used to refer to cables. Passive cables are more commonplace and they usually default HDMI cables you can get from the store. Meanwhile, active cables are characterized by built-in electronics that enable them to have long cable runs. These are the cable types that require a power supply in order to run.

With that in mind, what’s the deal with active vs passive HDMI? Should it really be a big deal if you have one type of cable over the other? Or is the active HDMI cable only useful for very few specific conditions or circumstances?

What’s The Difference Between The Two?

There’s no significant difference between an active HDMI cable and a passive one save for the additional features present in the former. Thanks to the active cable’s use of electronics to push the signal farther than its passive counterpart, it’s able to carry the signal much longer without relying on an Ethernet cable extension kit. The maximum certifiable distance of a typical cable is 25 feet or 1080p without any issues as long as the same wire gauge is used.

This is the deal when it comes to cables that connect to HDMI 1.4 to 2.0 chipsets. Active cables don’t work so well with extensions, splitters, switchers, and matrix connections. They instead work best with a single connection between the sink and source. If you make this practically one-way connection more complicated than usual, you will end up with issues you won’t get with an ordinary passive HDMI cable.

Active HDMI versus Passive HDMI

Here are the pros and cons of both active and passive HDMI cables in comparison with one another. Do you wish to have more signal length in exchange of more limited applications? Or are you willing to get resolution downgrades at certain cable run distances in exchange for

Passive Cables Run Either Way: Passive HDMI cables are usually what articles refer to when mentioning ordinary or standard HDMI cables. These are the cables you use for splitting the HD transmission to allow for dual HDTV or monitor usage. They’re also the cables being referred to when converting your HDMI source device or display into a backward-compatible machine that can run legacy systems and formats like VGA and SCART. This is because passive cables can run the signal either way, from source to display and back. It doesn’t matter which end you plug it. It’s also much thicker at longer runs.

Active Cables Run One Way: Active cables are more sensitive than passive cables, thus needing more rules in order for it to work. This is ironic seeing that the cable’s additional electronics and power supply was supposed to make it superior to its standard HDMI cable counterpart. These cables can only run one direction and will have a marker or label on each connector so you can tell if that end goes to a display device or a source device. This cable also depends on the display device for its power supply. It won’t work if you mix up the ends.

More Leeway with Passive Cables: More likely than not, you’ll get more leeway using a passive HDMI cable and you’ll have more limited applications for the active HDMI cable. This is because the passive cable is the default and certain setups like a matrix switch system or a switcher used to connect multiple HDMI sources to one or two HDMI display monitors are typically tested mainly for passive cables. Any bugs or glitches that could happen with an active HDMI cable and its internal electronics and power supply.

No Daisy-Chaining with Active Cables: You cannot daisy-chain from one monitor to another for the sake of, say, mirroring the display with a dual monitor setup when using active cables. They’re more sensitive than their passive counterparts in such situations. Furthermore, the sink end of the active cable needs to be able to draw some power in order to enable the sink chipset to perform error correction, timing, and so forth. Additionally, although some got lucky with using an active HDMI cable extender, there are no guarantees it can work for you.

You Can Simply Do More with Passive Cables: You can simply do more things with passive cables exactly because they’re dual-directional instead of mono-directional. You can use them to convert HDMI connections to other display inputs like USB, VGA, coax, component, AV, DP, SCART, DVI, Mini DP, Ethernet, RF coaxial, RG6, RJ45, Thunderbolt, Composite Video, Wireless, Wi-Fi, iPhone, and much more. You can use both modern and legacy devices with HDMI ports as long as you use passive cables that can practically connect with any adapter or converter. When you attempt to make an active cable work with a legacy system, it simply won’t work.

Active Cables Require More Trial and Error: In order to make your active cable work with connections more complex than linking an HDMI source device to an HDMI display at ranges or distances further than 25 feet, you need to act like a scientist and do experiments on different connections, adapters, converters, extensions, kits, and so forth to see which ones click or don’t. You’ll have to see for yourself which setup works best for you depending on the model of device you have, the model of display you have, and the quality of your active cable such that it can maintain power for its sink chipset without resulting in errors.

More Short-Range Signals with Passive Cables: Active cables were mainly developed to allow casual non-tech-savvy users to connect their, for example, their cable box with their HDTVs from different rooms and the like. This is because your standard passive cable has a max length of 25 feet for a 1080p signal. It’s even shorter for a 24 AWG cable, which is 15 feet. At longer lengths, your passive cable will have problems with higher resolutions, such that you’ll be forced to go into fallback mode or something, running the video at 720p or at a lower frame rate of 30 Fps. This shortened range of signal transmission comes in exchange for versatility.

How to Make Active Cables Work in Complex Systems: Some users were so frustrated with making the active HDMI cable work in complex connection systems that they ended up shifting to optical cables for their TV, AVR for their SmartApps audio, a Harmony remote control for HTS. This type of setup works well if you use the AVR as your HTS hub, such that all your HDMI-linked devices run through the AVR first with a single HDMI cable for video and the optical in for the TV. They were forced to use other formats to fill in the shortcomings of the active HDMI cable! There’s no way to reverse an active cable’s direction if installed incorrectly, after all.

Passive Cables Were Made for Complex Systems: A lot of experimentation is also involved with making passive cables work properly, but you also get more combinations that work with them instead of against them. For example, you’re likelier to use passive cables to connect a DVD player, a BD player, a cable box, a game console, and a desktop PC with an HDTV using a switcher or four HDTVs using a matrix switcher or a switcher-splitter hybrid. It gets more complicated when converting HDMI connections to work with legacy devices like a VCR or a SCART-connection CRT television set.

Active Cable Precautions and Safeguards: You’re encouraged to double-check the ends of our active cable before running it in the wall to ensure the proper ends are going to the proper devices and displays. This ensures that the cable will work. HDMI to older format conversions can only be done on one end with an active cable because it needs to connect to an HDMI monitor for its power supply. Therefore, you can maybe use an active cable to convert an old game console like the Nintendo Entertainment System or the Sega Genesis in order to make it run on an HDTV. Maybe. After all, an active cable has issues working with extensions and converters as well.

The Bottom Line

Active HDMI cables work best with the most basic of setups, with you connecting one single DVD or BD player, game console, or cable/satellite box to your designated HDTV or HDMI monitor. Otherwise, they’re more trouble than they’re worth and their disadvantages outweigh their advantages. The more complicated your setup becomes—such as dual-monitor setups or building your own home entertainment system matrix filled with splitters and switchers—the less practical it gets to use an active HDMI cable for the sake of extending signal reach beyond more than 25 feet.

If you really want to make a cheaper and practical way to extend your signal for multiple rooms or extra-large home entertainment centers, then it’s more practical to invest in affordable Cat5/Cat6/Cat7 Ethernet cables and an HDMI to Ethernet adapter kit for long-reaching HD signals. You can also go wireless by getting an HDMI wireless transmitter and receiver that also have long-range Wi-Fi signals that can reach through the biggest of residences or mansions.

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