How to Splice RCA Cable to Speaker Wire? [Step by Step]

Sometimes, audio enthusiasts find themselves in a situation where they need to connect RCA cables to speaker wires. Yet, boosting sounds by connecting the RCA cables to an amplifier is beneficial, but one must also be careful. A wrong connection can damage your sound system. However, if one has a stereo system with RCA outputs and a pair of speakers, they need speaker wire hookups. This is because RCA cables are not instantly compatible with most speakers; they rely on speaker wire connections. Splicing these wires allows you to incorporate many devices into your audio setup while enjoying your favorite music, movies, or games.

So, splicing RCA cables to speaker wire properly is an important skill! If you too are looking at how you can splice RCA cable to speaker wire, then read this blog, you will discover everything on how you can do so! 

Keep reading!

What are the RCB cable and the Speaker Wire?

RCA cables and speaker wires are crucial in transporting music from source to speaker. Each of these fundamental components has a specific purpose. RCA cables are built for signal transmission and speaker wires for direct connection between speakers and audio sources. Understanding these two components is critical for creating a seamless, immersive audio experience.

So let’s start with understanding them —

  • RCA Cable:

RCA (Radio Corporation of America) cables are essential to audio and video transmission. These cables are named after the company that launched them in the early 1940s. And since then, it has been the industry standard for connecting audio and video devices. RCA cables often have color-coded connectors, with red and white for audio and yellow for composite video.

rca cable

They are used in home entertainment systems, audio equipment, and other audio-visual devices. It transfers analogue audio and video signals from one component to another. Making them crucial in setting up home theaters, gaming consoles, and audio systems.

  • Speaker Wire:

Unlike RCA cables, speaker wire is a plain, simple wire used to connect audio sources to speakers. The speaker wire comprises two insulated wires that are often color-coded and connect speakers to audio devices. The primary function of the speaker wire is to carry electrical audio impulses while maintaining sound fidelity and clarity as it goes from the amplifier to the speakers.

speaker wire

Speaker wire is available in various gauges and lengths to accommodate diverse audio systems. Whether for a modest stereo system or a vast, immersive home theater. It is essential for achieving optimal sound reproduction in any audio system.

How to Splice RCA Cable to Speaker Wire? 

Splicing RCA cables to speaker wire is essential for audio enthusiasts since it allows you to connect many audio components. Below is the process of integrating historical equipment with current devices or customizing your audio setup.

However, you’ll need some essential materials and follow particular techniques to achieve a solid and reliable connection of these wires.

Required Items to Splice RCA Cable to Speaker Wire—

  • RCA cable: Choose an RCA cable with the appropriate length and quality for your audio setup.
  • Speaker wires: Select the correct gauge and length of speaker wire for your speakers.
  • Strippers for wires: These tools are necessary for removing wire insulation and exposing the copper conductors.
  • Cutters for wire: This is useful for trimming wires to the proper lengths.
  • Optional soldering iron and solder: Soldering is advised for a more secure and long-lasting connection.
  • Heat-shrinkable tubing: This adds insulation and protection to the splice.
  • Electrical tape: This is useful for wrapping and securing a connection.
  • Wire Connectors (if not soldering): Wire connectors can be used to fasten the wires instead of soldering.

So now, since you know the required material you need, it’s time to explore the steps for it!

Step by Step Guide to Splice RCA Cable to Speaker Wire—

Step 1- Gather all the material as listed above.

Step2- Prepare the Cables

  • Cut the RCA cable to the desired length, considering the distance between your audio source and the speakers.
  • Remove the RCA cable’s outer insulation to reveal the inner wires.
  • Strip the speaker wire ends to reveal the bare copper.
preparing cables

Step 3: Recognize the RCA Cable Wires

  • Two inner wires are inside the RCA cable: one with a white insulator (left channel) and one with a red insulator (right channel).
rcb cable inner wires

Step 4: Connect the Wires

  • Connect the positive terminal of the speaker wire (typically marked with a + sign or a red stripe) to the positive terminal of the red RCA cable wire.
  • Connect the speaker wire’s negative terminal to the white RCA cable wire.
connecting positive and negative wires

Step 5: Protect the Connection

  • Apply heat to create a secure connection between the wires using a soldering iron and solder. This step improves audio quality and longevity.
  • If you are uncomfortable soldering, use wire connectors to secure the wires.
soldering the wires

Step 6: Insulate the Connection

  • Slide heat shrink tubing over the soldered or connected wires.
  • Shrink the tubing with a heat gun or lighter to provide insulation and extra protection.
heat shrinking with lighter

Step 7: Apply Electrical Tape

  • Wrap electrical tape around the connector to protect it from moisture and physical harm.
using electrical tape

Step 8: Do the same for the other channel (if applicable).

If you’re splicing a stereo RCA cable, repeat the process for the second channel. Make sure that both the left and right channels are correctly linked.

You can effectively splice RCA cables to speaker wire by following these instructions and utilizing the proper materials, allowing you to experience better audio connectivity and expand the capabilities of your audio system. This expertise will help attain the correct audio output, establish a home theater, set up a stereo system, or connect audio equipment for a specific purpose.


Splicing RCA cables to speaker wire helps expand your audio setup’s capabilities. Also, it enables you to connect many devices. You can get a clean and secure splice that improves your audio experience by following the above steps and using the proper equipment. Knowing how to splice RCA cables to speaker wire is crucial for any audio lover, whether building a home theater system or enhancing your stereo setup.


Q1. Is it possible to convert an RCA cable to a speaker wire?

Yes, it is possible, but the gauge of that wire isn’t appropriate for speaker cable use and will force your amp receiver to run hotter due to the resistance issue, lowering the quality of the music.

Q2. Is RCA superior to speaker wire?

If they are modest speakers, the cable typically attached to RCA connections will suffice, but if they are prominent speakers, you will need thicker speaker wire. If your speakers accept RCA connectors, you can solder them on. RCA is a line signal that is not amplified, whereas speaker wires are.

Q3. How do you splice and extend the speaker wire?

Simply place the two wires you want to splice, facing the same way. Attach the cap to the ends of the wires and twist clockwise to tighten the wires together. After connecting the wires, use electrical tape to fasten the wires to the cap.


John Doe

John Doe

I am John, a tech enthusiast with a knack for breaking down complex camera, audio, and video technology. My expertise extends to social media and electronic gadgets, and I thrive on making the latest tech trends understandable and exciting for everyone. Sharing my knowledge through engaging content, I aim to connect with fellow tech lovers and novices alike, bringing the fascinating world of technology to life.

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