How to connect a music speaker to a TV: all methods

The quality of the built-in speakers in modern flat-panel TVs often leaves much to be desired, especially when it comes to watching blockbusters in surround sound or listening to high-definition music. The thin body physically does not allow the placement of powerful low-frequency drivers, which is why the sound becomes flat and lacks depth. That is why the question of how to connect a music speaker to a TV becomes relevant for many home equipment owners seeking to improve the acoustic experience.

Fortunately, the industry offers many options to solve this problem, from wireless technologies to time-tested cable connections. Interface compatibility plays a key role in choosing the optimal method, since not all TVs and audio systems are equipped with the same set of ports. In this article we will analyze in detail all the available switching methods so that you can choose the most suitable one for your situation.

Using Bluetooth for Wireless Connection

The most popular and convenient way to create a wireless audio system is to use the protocol Bluetooth. This method saves the user from unnecessary wires and allows you to place the speaker anywhere in the room where the signal range allows you to maintain a stable connection. However, it is worth considering that the quality of sound transmission may vary depending on the protocol version and codecs used.

To get started, you need to make sure that your TV supports the function Bluetooth Audio or Bluetooth Speaker List. This option is usually found in the sound settings menu or in the connections section. If the TV is old and does not have a built-in module, you can purchase an external Bluetooth transmitter that connects via optical output or AUX.

The pairing process is as follows:

• 🔵 Turn on your Bluetooth speaker and put it in Pairing Mode, usually by long pressing a special button.
• 🔵 On the TV remote control, press the button Settings or go to the settings menu from the home screen.
• 🔵 Find the section Sound → Sound settings → List of Bluetooth speakers (path may vary depending on brand).
• 🔵 Select your speaker from the list of available devices that appears and confirm the connection.

It's important to remember about sound delay, known as Latency. When watching movies, you may notice a desynchronization between the movements of the actors' lips and the spoken words.

⚠️ Attention: If the audio delay is too long when connected via Bluetooth, try updating the TV software or using a wired connection to synchronize the audio and video stream.

Connection via HDMI ARC and eARC

Interface HDMI ARC (Audio Return Channel) and its more modern version eARC (Enhanced Audio Return Channel) represent the gold standard for high-quality audio transmission. This method allows you to transmit uncompressed multi-channel audio, including Dolby Atmos and DTS:X formats, which cannot be done through regular Bluetooth or optical cable.

To implement such a connection, your TV and audio system (sound bar or receiver) must support this technology. Typically an HDMI port that supports return channel is marked with a special label. ARC or eARC. Only one HDMI port on a TV usually supports audio return, so it's important to find that one.

Algorithm of actions for setting:

• 🎬 Connect an HDMI High Speed cable (preferably version 2.1 for eARC) to the appropriate ports on your TV and speaker.
• 🎬 Turn on both devices and wait for the operating system to load.
• 🎬 On your TV, in the sound settings, select Audio output and indicate HDMI Receiver (ARC).
• 🎬 Activate the function HDMI-CEC (on Samsung this is Anynet+, on LG - SimpLink, on Sony - Bravia Sync) to control the volume with one remote control.

Characteristics	HDMI ARC	HDMI eARC	Optical cable
Maximum quality	Compressed 5.1/7.1	Uncompressed 7.1/Atmos	Compressed 5.1/Stereo
Control support (CEC)	Yes	Yes	No
Bandwidth	up to 1 Mbit/s	up to 37 Mbit/s	up to 3 Mbit/s
Cable required	HDMI 1.4+	HDMI 2.1	Optical Toslink

Using HDMI eARC requires a quality cable that is certified for high data rates. Cheap cables may not provide stable, high-density signal transmission, resulting in interruptions or no sound at all.

Digital connection via optical output (Toslink)

Optical output S/PDIF (Toslink) For a long time it remained the main way to connect external speakers to a TV. Despite the advent of HDMI, this interface is still widely used and provides a pure digital signal without the electromagnetic interference that can occur with analog cables.

The main advantage of an optical connection is galvanic isolation. Because the signal is transmitted via light pulses through fiberglass, the risk of background noise and hum associated with analogue methods is completely eliminated. However, this method has a limitation: it does not support the latest object audio formats such as Dolby TrueHD or DTS-HD Master Audio in their native form.

To connect, follow these steps:

1. Remove the plastic plugs from the optical cable and device ports (if any).
2. Insert the cable until you hear a characteristic click into the port Optical Out on TV and Optical In on the column.
3. In the TV menu, go to Settings → Sound → Digital output.
4. Select the output format, e.g. PCM for stereo or Pass Through to transmit the original bit stream to the speaker decoder.

When choosing a format PCM the TV takes over the audio decoding and sends a ready-made signal, which is useful if your audio system cannot decode complex formats. Mode Pass Through transmits the raw signal, allowing the higher-quality DAC of the external speaker to process the sound.

⚠️ Warning: The optical cable is fragile inside. Do not bend it at a sharp angle or allow sharp bends, as this may damage the integrity of the light guide and lead to signal loss.

Analog connection via AUX and RCA

For older TVs or budget models that lack digital outputs, the only option is an analog connection. Connector 3.5 mm (Mini-Jack), often called AUX, or pair of jacks RCA (“tulips”) allow you to connect almost any active speaker system or computer speakers.

The sound quality in this case directly depends on the quality of the digital-to-analog converter (DAC) built into the TV. In modern thin models, this component is often simplified, which can lead to hiss or lack of detail in the high frequencies. However, this is quite enough for regular TV viewing.

If the TV only has output RCA (white and red), and the column has an input 3.5 mm, you will need a special adapter cable 2 RCA - 3.5 mm. It is important to observe the color coding: the white channel corresponds to the left (L), and red - to the right (R).

How to improve sound with analog connection?

If you hear a strong hum or noise, try moving the speaker's power supply away from the Wi-Fi router or other sources of electromagnetic radiation. Also, using a cable with ferrite filters (thickenings at the ends) can reduce the level of interference.

Adjusting sound and troubleshooting problems

Once the device is physically connected, additional software configuration is often required to achieve the best results. Many users forget to turn off the internal speakers of the TV, which creates an echo effect when the sound comes from two sources simultaneously with a slight delay.

In the sound settings menu, find the option Speakers or Audio output and switch it to mode External speakers or Audio system. This action will completely mute the TV's built-in speakers and redirect the entire stream to the connected speaker.

When faced with no sound, check the following:

• 🔊 Make sure the correct column is selected signal (Input Source) corresponding to the used port.
• 🔊 Check the volume level both on the TV and on the speaker itself (sometimes they are adjusted independently).
• 🔊 Make sure that the audio format in the TV settings is compatible with the capabilities of the connected device.

If there is sound, but it is interrupted or crackling, the problem may lie in the length of the cable. For analog connections, the wire length should not exceed 3-5 meters, otherwise the signal will begin to fade. In the case of digital optical cables, the limit is about 10 meters for standard fiber.

Using Bluetooth adapters for old TVs

What to do if your TV doesn’t support Bluetooth and you don’t want to run wires across the entire room? The solution would be an external Bluetooth transmitter. This is a small device that connects to the optical or analog output of the TV and broadcasts sound to a wireless speaker.

When choosing an adapter, pay attention to the supported codecs. To minimize latency and improve quality, look for codec support aptX Low Latency or aptX Adaptive. The regular SBC codec can cause noticeable desynchronization when watching video.

Procedure:

1. Connect the transmitter to a power source (USB) and to the audio output of the TV (Optical or 3.5 mm).
2. Place the transmitter in transmit (TX) mode and enable pairing mode.
3. Activate device search on your Bluetooth speaker.
4. After successful connection, the sound will automatically go through the external speakers.

⚠️ Attention: Some Bluetooth transmitters require a separate power source. If you connect them to your TV's USB port, make sure the port supplies enough current (typically 500mA), otherwise the device may become unstable.

Frequently asked questions (FAQ)

Why does the sound lag behind the picture when connecting a speaker via Bluetooth?

This phenomenon is called latency. It occurs due to the time required to encode, transmit and decode an audio signal. To resolve this, try using low latency codecs (aptX LL) or switch to a wired connection via HDMI ARC or optical cable where latency is minimal.

Is it possible to connect regular 220V computer speakers to a TV?

Yes, if the TV has a 3.5 mm analog output (Mini-Jack) or RCA. Computer speakers usually have a 3.5mm input. If your TV only has an optical output, you will need a DAC (digital to analogue converter) to convert the signal.

What is the difference between HDMI ARC and regular HDMI?

Regular HDMI transmits video and audio in only one direction (from the source to the screen). ARC (Audio Return Channel) allows audio to be sent in the reverse direction from the TV to an external audio system using the same cable, eliminating the need for a separate audio cable.

Which connection gives the best sound: optical or HDMI?

HDMI (especially eARC) provides significantly better sound as it supports sufficient bandwidth for uncompressed multichannel formats (Dolby TrueHD, DTS-HD MA). Optics are limited to compressed formats and cannot convey the full scope of modern film formats.