audio

On the back of every TV, there are different ports for various types of cables. Each of these is labeled so users know which cables go where. Every TV today is built with HDMI ports as the current audio/video standard. For the most part, these ports are simply labeled “HDMI”. But if you take a closer look, you may notice one labeled as “HDMI ARC”. This is a special type of HDMI port that comes with a few extra features when connecting a soundbar, receiver, or other audio system to a TV.

Key Takeaways

• HDMI ARC means Audio Return Channel.
• ARC allows compatible TVs to send audio back to a soundbar or receiver through HDMI.
• Both connected devices need compatible ARC functionality.
• Always connect the HDMI cable to the ARC-labelled HDMI port.
• ARC can help reduce cable clutter in home entertainment setups.
• Audio capabilities vary depending on the TV, source, sound system, and supported formats.
• eARC is the enhanced version designed for greater bandwidth and more advanced audio capabilities.

All cables (with the exception of fiber cables) are made using metal. Looking at any cable, users can see metal in the connectors on the end. Some connectors are entirely made of metal while others are mostly plastic and contain small metal pins. Regardless of how much metal is used in making a cable, and regardless of what exactly that cable is used for, these materials are all used for the same purpose: to conduct electricity. Any user who has handled various cables over the years, as most people have, has probably noticed that different metals can be used from one cable to the next.

Why are Certain Metals used in Cables?

So why are different metals used? Is there a metal that is better than the rest? There are many different factors that go into selecting what metals are used in making a cable. The first of which is conductivity. The list shows the commonly used metals in cable manufacturing, from most to least conductive (rated assuming the metals are pure).

1. Silver
2. Copper
3. Gold
4. Aluminum

XLR and DMX cables have a bit of overlap and it can be difficult to keep the two separate. The short answer is that XLR cables are used for audio while DMX cables are for lighting. Both cables use the same kind of connectors and look the same on the outside, there are differences on the inside. There is a little bit of cross-functionality, but XLR and DMX should not be interchanged unless users find themselves in a desperate situation.

Key Takeaways

• XLR and DMX are not the same thing.
• XLR primarily refers to a family of connectors, while DMX is a digital lighting-control protocol.
• DMX systems commonly use XLR-style connectors.
• DMX equipment may use 3-pin or 5-pin connectors.
• A standard microphone XLR cable should not automatically be considered a DMX cable.
• For reliable lighting-control systems, use cable designed for the electrical requirements of DMX.
• Check connector type, pin configuration, impedance, shielding, cable length, and construction before purchasing.
• Keep audio and lighting-control

Every type of cable has a maximum distance. These distance limits can vary greatly from one type of cable to the next. Along with determining whether a cable will work, distance limits will also determine how well a cable works. Knowing the fundamentals behind cable distance limits is the first step in selecting the best cable for your needs.

Key Takeaways

• Every audio and video cable has a practical distance limit.
• Longer cable runs can increase signal degradation.
• Cable quality and construction can affect real-world performance.
• HDMI, DisplayPort, VGA, DVI, RCA, XLR, Toslink, and other cable types have different practical distance limits.
• Higher-resolution video generally requires greater attention to cable quality and signal bandwidth.
• Avoid unnecessary couplers and connections on long cable runs.
• Use active cables, boosters, baluns, or fibre-based solutions when passive cables cannot reliably support the required distance.
• Shielding can help reduce the effects of electromagnetic

3.5mm jacks, also called headphone jacks, are the most common type of audio cable. There are different variations of the 3.5mm audio jack, such as the smaller 2.5mm and the larger ¼”, but they are all functionally similar. 3.5mm cables are commonly available as off-the-shelf items, but sometimes a repair it easier than a replacement. Other times, users need a custom size not available as a standard cable.

Key Takeaways

• 3.5mm cables are widely used for headphones, speakers, computers, smartphones, car audio, and other audio equipment.
• The main 3.5mm connector configurations include TS, TRS, and TRRS.
• Always verify the wiring configuration before making or repairing a cable.
• Use suitable audio cables, connectors, soldering tools, and strain relief for DIY projects.
• Inspect and document existing wiring before removing a damaged connector.
• Use a multimeter to check continuity and identify short circuits before connecting the repaired cable.
• Poor solder joints and damaged shielding can

Audio and video cables go hand-in-hand, often being paired together. Some cables can even transmit audio and video on just one line. Over time a lot of new audio and video cables have been introduced, so the cable you need will often depend on the age of the equipment you are using. Most TVs, computers, and other devices can use multiple types of audio and video connections, so it is good to be able to identify them and know your options.

Key Takeaways

• Audio and video cables connect equipment and transmit analogue or digital sound and image signals.
• Common audio cables include XLR, RCA, 3.5mm, TRS, speaker, and digital audio cables.
• Common video cables include HDMI, DisplayPort, DVI, VGA, composite, component, S-Video, and BNC cables.
• Some interfaces, such as HDMI, can transmit both audio and video.
• Always identify the connector and signal type before selecting a cable.
• Cable length, shielding, construction, and signal requirements can affect system performance.
• For video, consider