Signals are also prone to unpredictable interruptions, just like you sometimes experience with WiFi. Unlike HDMI over Cat 6, wireless HDMI solutions tend to degrade image quality-not fatally, but enough for a discerning eye to notice. In most products, broadcast ranges top out at around 50 feet. Wireless HD systems can be useful, but they have limitations. These work by stationing a transmitter near the video source and a small receiver by the TV. Rather, it's a blanket term for a variety of wireless products that transmit video signals using proprietary wireless standards. "Wireless HDMI" is a phrase thrown around a lot, but it doesn't refer to an official standard or even a specific technology. In these cases, you can bypass wires entirely.
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What if you'd like to lug your TV into the backyard for the big game? Or maybe you rent your home and aren't permitted to string cable through your walls.
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In addition, DIY installation is a complicated and difficult proposition, and professional installation makes the setup even more expensive. While the fiber itself is cheap, adapter hardware is pricey ($500-plus per box). This means existing household coax installations, which generally make use of only a single cable running to each connected room, won't be of much use.įor even longer runs, you'll have to leave the world of copper for fiber optics. One catch: HDMI over coaxial solutions usually require a minimum of two coax cables, and often as many as four. Cat 5e is a more common cable, but the newer Cat 6 standard is preferred by AV installers for its higher bandwidth.) At the receiving end, a similar box passes the signal back onto an HDMI cable, which then connects to your display.įor distances up to 300 feet, similarly priced adapters are available that make use of coaxial cable. (These are the same cables used to wire Ethernet networks.
Its job is to pass the HDMI signal along to one or more Cat 5e or Cat 6 cables. The balun usually takes the form of a small, router-like box or a wall plate. Here's how it works: A video source, such as an HD cable box, is connected to a small device-a "balun," in the parlance of the trade-with a short HDMI cable. Steven D'Addone, co-owner of Intra Home Systems in New Jersey-an installer of high-end audiovisual systems-swears by the technology. One commonly used solution to cable-length limitations is something called HDMI over Cat 6. Since you can't terminate HDMI wires yourself, look for wall plates with an internal female connector. HDMI qualifies as low-voltage wiring, so wall plates can be attached with a simple bracket rather than a standard electrical box. And when you're fishing wires up into ceilings, over doors and under floors, the necessary spool of cable gets long quickly. Similarly, HD home theater digital projectors are now affordable enough for non-gazillionaires to set up a basement cinema.Ī clean installation of either of those setups generally requires a bit of in-wall wiring, sometimes even from one room-an AV closet, for instance-to another. Flat screens are increasingly thin and lightweight, and their picture-frame profiles make them perfect for hanging on walls. With a collocated setup, you'll probably never need more than 6 feet of cable at a time.īut HDTVs have introduced a whole new way of arranging home theater gear. If your TV, set-top box, and other AV equipment are all on the same piece of furniture, this isn't much of a concern. Even online, cables more than 50 feet long can be hard to find. And it's rare to see an HDMI cable longer than 25 feet in a store. Like many audio, video, and data cables, HDMI cords can suffer from signal degradation at longer lengths-50 feet is generally considered the maximum reliable length.
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But for everything this unassuming all-in-one cable can handle, sometimes it comes up short. It helped clean up the tangled mess of wires behind our TVs, gave us a way to quickly link a stunning range of devices with a new generation of displays, and provided a sturdy backbone for the HD revolution.
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