If you love audio equipment, you might have seen XLR cables and TRS cables. These cables help send sound from one device to another. But sometimes, you need to connect balanced XLR outputs to an unbalanced TRS input. This guide will show you how to do it!
If you think it is troublesome to DIY the cables yourself, you can also choose to directly purchase the balanced xlr to trs cable.
Table of Contents
What Is an XLR Cable?
What does xlr stand for? An XLR cable has three pins inside its connector. These pins help send strong and clear signals. Most XLR cables are balanced, which means they carry two versions of the audio signal to cancel out noise. However, some devices need unbalanced signals instead.
What Is a TRS Connector?
A TRS connector (Tip-Ring-Sleeve) looks like a headphone plug. It has three parts:
- Tip (T) – This carries the right audio signal.
- Ring (R) – This carries the left audio signal.
- Sleeve (S) – This is the ground connection.
TRS connectors can carry stereo audio, just like XLR cables. But if your XLR outputs are balanced and your TRS input is unbalanced, you need to wire the cables carefully.
To learn more about TRS Connectors, pls read the article – TRS Connectors: A Comprehensive Guide.
How to Make a Balanced XLR to Unbalanced TRS Cable
While XLR cables offer superior noise rejection, they aren’t always necessary for every audio application. Consider using XLR balanced cables in these scenarios:
Here’s what you need:
- Two 3-pin XLR male connectors
- One 1/4-inch TRS connector (or 3.5mm if needed)
- Three-conductor audio cable
- Soldering iron and solder
- Wire cutters and strippers
- Electrical tape or heat shrink tubing
Step 1: Prepare the Wires
Cut your audio cable to the length you need.Strip the outer insulation to reveal three wires inside:
- Red (Right audio / Hot)
- White (Left audio / Cold)
- Bare or Shield (Ground)
Strip a small section of each wire so you can connect them.
Step 2: Connect the XLR Connectors
Each XLR connector has three pins:
- Pin 1 – Ground (Shield)
- Pin 2 – Hot (Audio Signal)
- Pin 3 – Cold (Inverted Audio Signal)
For each XLR connector:
- Solder the shield wire to Pin 1.
- Solder the hot wire (Red for Right, White for Left) to Pin 2.
- Solder the cold wire (Pin 3) to Pin 1 to avoid signal loss.
Step 3: Connect the TRS Connector
- Solder the right hot wire (Red) to the Tip (T).
- Solder the left hot wire (White) to the Ring (R).
- Solder the shield wire to the Sleeve (S).
Step 4: Insulate and Secure the Connections
Use electrical tape or heat shrink tubing to cover the soldered connections.Ensure there are no loose wires or exposed metal parts.And then, assemble the connectors back together securely.
Why Does This Work?
Balanced XLR signals have a hot and cold signal. Since unbalanced TRS inputs only use one signal per channel, we tie the cold signal to ground (Pin 3 to Pin 1) to avoid interference. This method keeps the audio clean and reduces noise.
- Tips for Best Results
- Keep cables short to reduce noise.
- Avoid placing cables near power cords to prevent interference.
- Use quality connectors and solder for a strong connection.
Some FAQs
Do XLR cables need to be balanced?
No, XLR cables can carry both balanced and unbalanced signals. However, they are primarily designed for balanced audio to reduce noise and interference.
Can I plug an unbalanced output into a balanced input?
Yes, but the signal will remain unbalanced. Some balanced inputs can accept unbalanced signals automatically, but in other cases, you may need a direct box or proper wiring to avoid signal loss or noise issues.
How to balance an unbalanced audio?
You can use a DI (Direct Injection) box or a balun transformer to convert an unbalanced signal into a balanced one. Active circuitry, such as a balanced line driver, can also be used for better signal integrity.
Conclusion
Making a balanced XLR to unbalanced TRS cable is simple with the right steps. By wiring the cables correctly, you can connect professional audio gear to consumer devices without losing sound quality. Now, you can enjoy clear and noise-free audio!
If you want to DIY your own audio cables or can’t find the right audio cable wire brand, I hope the following article can help you:
