Modern flat-panel TVs, while boasting impressive picture quality, often disappoint users with mediocre built-in sound. The thin body does not physically allow for the placement of full-fledged speakers capable of conveying deep bass and clear high frequencies. That is why the question how to connect external speakers to TV, becomes relevant for most owners of new equipment immediately after unpacking.
Luckily, the industry offers many ways to improve your home theater audio experience. You can use both wired connections for stable signal transmission without delays, or wireless technologies for maximum placement freedom. The correct choice of method depends on the available connectors on your TV and the type of speaker system you choose.
In this article we will examine in detail all the available connection options, from analog cables to modern digital protocols. You will learn about the nuances of setting Smart TV based on Android, webOS and Tizen, and also understand how to avoid common mistakes when switching equipment. A willingness to pay attention to detail ensures you get rich, spacious sound worthy of blockbuster movies.
Selecting the optimal connection type: wired or wireless
Before you grab cables, you need to audit your existing equipment and determine the available interfaces. Wired connection traditionally considered more reliable, as it eliminates any sound delays (lags) and loss of quality during signal compression. This is critical for avid gamers where audio and video synchronization must be perfect.
On the other hand, wireless technologies like Bluetooth or Wi-Fi allow you to get rid of unnecessary wires that spoil the interior. However, it is worth considering that when transmitting over the air, minimal desynchronization is possible, although modern codecs such as aptX Low Latency, reduce this problem to a minimum. The choice between convenience and quality is yours.
It is also important to consider the power of your speakers. If you plan to connect a powerful audio system or soundbar with a subwoofer, it is better to focus on digital outputs. For simple stereo speakers or entry-level computer speakers, a standard analog output, which is found on almost every TV, is often sufficient.
Using optical output (Optical / Toslink)
One of the most popular and high-quality methods of transmitting sound is using an optical cable Toslink. This interface transmits digital audio signals in the form of light pulses, which completely eliminates the influence of electromagnetic interference. Optical output capable of transmitting multi-channel audio formats Dolby Digital and DTS, making it an excellent choice for home theaters.
To connect, you will need a special cable with square connectors, often backlit at the end. Please note that the connector may be protected by a plastic cap that must be carefully removed before inserting the cable. After physically connecting the devices, you need to go to the TV menu and switch the audio output from the speakers to Optical output or External Speaker.
When connecting an optical cable, make sure that the protective caps are removed from both ends, otherwise the light signal will not pass through and there will be no sound.
⚠️ Attention: The optical cable should not be bent at an acute angle (less than 90 degrees), as there is fragile glass fiber inside that can burst, causing the cable to fail.
Despite its popularity, this method has a limitation: the standard Toslink does not support the latest object-oriented audio formats such as Dolby Atmos in full, and cannot transmit a signal above two channels without compression. However, for most users the difference will not be noticeable, and the connection stability will remain high.
Connection via HDMI ARC and eARC
The most modern and functional method of integrating external acoustics is the use of a port HDMI ARC (Audio Return Channel) or its improved version eARC. The main feature of this standard is that one cable is capable of transmitting a video signal to the TV and returning audio back to the receiver or soundbar. This allows you to control the volume of external speakers directly from the TV remote control.
To implement such a scheme, make sure that your TV and audio system support the technology ARC. Usually the corresponding port on the TV is marked with a special inscription. Connect the HDMI cable to the port HDMI (ARC) on the TV and a similar port on the soundbar or receiver. In the TV settings you need to activate the function HDMI-CEC (may be called Anynet+, SimpLink, BRAVIA Sync) so that the remote control controls both devices.
☑️ Checking HDMI ARC connection
Version eARC (Enhanced Audio Return Channel), available in the HDMI 2.1 standard, offers even higher bandwidth. This is essential if you want to enjoy uncompressed multi-channel audio. Dolby Atmos or DTS:X from streaming services. In this case, the requirements for the cable increase: it is recommended to use certified cables HDMI Ultra High Speed.
| Characteristics | HDMI ARC | HDMI eARC | Optics (Toslink) |
|---|---|---|---|
| Maximum audio format | Dolby Digital Plus | Dolby TrueHD, DTS-HD MA | Dolby Digital, DTS |
| Number of channels | up to 5.1 | up to 7.1 and more | up to 5.1 (compressed) |
| Control with one remote control | Yes (via CEC) | Yes (via CEC) | No (requires IR blaster) |
| Video transfer | Yes | Yes | No |
Analog connection: AUX and RCA (Tulips)
If your audio system is from previous generations or you use powered computer speakers, you will most likely need to use analog interfaces. The most common option is a connector 3.5 mm Mini-Jack (often labeled as Headphone or headphone icon). To connect, just insert the cable plug until you hear a characteristic click.
A more professional, but less common option in modern thin TVs is the use of connectors RCA, popularly known as "tulips". The red and white (or yellow for video, but we need audio) connectors provide stereo audio. Since modern TVs often do not have full-fledged “tulips”, manufacturers equip them with adapters for Mini-Jack 3.5 mm.
Why can the sound through AUX be quieter?
The analog output on your TV often has limited power available for headphones. For loud sound through large speakers, you may need an external amplifier or active speakers with their own power supply.
The main disadvantage of the analog method is its susceptibility to interference and lack of support for multi-channel audio. You will only get stereo. In addition, the sound quality directly depends on the quality of the digital-to-analog converter (DAC) built into the TV. In budget models it can be mediocre, adding noise and distortion.
Wireless connection via Bluetooth
Technology Bluetooth has become the de facto standard for wireless audio transmission. To connect a speaker, you need to put it into pairing mode (usually by holding down the power button or a special button Pairing). On the TV, go to the section Settings → Sound → Sound output and select search for Bluetooth devices.
Modern TVs based on Android TV or webOS allow you to connect not only mono speakers, but also full stereo pairs. However, it is worth keeping in mind the sound delay. When watching fast-paced movies or playing shooters, a lag of 100-200 ms can be noticeable and annoying. For music or news programs this is not critical.
⚠️ Attention: Bluetooth range is limited. If you move into another room or there is a thick concrete wall between the TV and the speaker, the connection may be interrupted or the sound may become choppy.
To minimize latency, look for codec support in your TV specifications aptX LL (Low Latency) or AAC. It is also important to consider the battery charge of a wireless speaker: active use quickly consumes energy, and a sudden shutdown in the middle of a movie will be an unpleasant surprise.
Sound adjustment and troubleshooting
After physical connection, manual adjustment of output parameters is often required. Go to the menu Settings → Sound. Find "Digital Output" or "Audio Output Format". The important thing here is to choose the right format: if your system supports Dolby Digital, select "Auto" or "Pass Through" to have the TV pass through the original signal rather than trying to decode it itself.
A common problem is desynchronization of lips and sound. In the menu of many TVs there is a function “Audio Delay Correction” or “Lip Sync”. By adjusting this parameter, you can achieve a perfect match. If the sound wheezes or disappears, check the integrity of the cable and try reducing the volume on the TV itself, increasing it on the speakers.
Correctly setting the output format (PCM or Bitstream) in the TV menu is often more important than the quality of the cable itself, especially for multi-channel audio.
If you are using a soundbar, be sure to update its firmware via USB or Wi-Fi. Manufacturers regularly release updates that improve compatibility with new TV models and correct errors in decoding audio formats.
Frequently asked questions (FAQ)
Can I connect regular computer speakers to my TV?
Yes, this is possible if the speakers have a 3.5 mm (AUX) or RCA input. You will need the appropriate cable. However, computer speakers are usually designed for listening purposes and may not provide the desired surround sound in a large living room.
Why is there no sound via HDMI, although there is a picture?
Most likely, in the TV settings, audio output to the built-in speakers is selected. You need to go to the sound settings and change the output device to an HDMI receiver or sound bar. Also check if the HDMI-CEC function is enabled.
What is the difference between PCM and Bitstream (Auto)?
PCM means that the TV itself decodes the sound and sends a ready-made signal (usually stereo) to the speakers. Bitstream (or Auto) transmits the “raw” digital signal to an external device, which itself decides how to output it. For home theaters, it is better to choose Bitstream.
How to improve the sound if there is no speaker output?
If your old TV does not have any outputs other than an antenna, you can use an HDMI audio extractor. This device connects between the signal source (for example, a set-top box) and the TV, “pulling” the audio signal and transmitting it to the speakers via optics or AUX.