How to Add HDMI ARC to an Old Receiver
If you have a modern TV with HDMI ARC or eARC and an older AV receiver without HDMI support, you can still route TV audio through your speakers.
The best method depends on your receiver’s inputs, the TV’s audio settings, and whether you want simple stereo sound or full surround playback.
Understanding how to add HDMI ARC to old receiver setups starts with one key fact: ARC is an HDMI feature, while most older receivers rely on analog audio, digital optical, or coaxial digital inputs.
That means you usually need an intermediary device or a different audio path to make everything work cleanly.
What HDMI ARC does and why older receivers cannot use it directly
HDMI ARC stands for Audio Return Channel.
It lets a TV send audio back to a connected sound system over the same HDMI cable used for video input, reducing cable clutter and enabling TV apps, streaming devices, and broadcast audio to play through external speakers.
Older receivers often lack HDMI ports entirely, or they may have HDMI inputs but no ARC support.
In that case, the receiver can accept audio from optical, coaxial, RCA, or multichannel analog inputs, but it cannot decode the ARC signal on its own.
- ARC is not the same as standard HDMI input audio.
- eARC is a newer version with higher bandwidth and better format support.
- Older receivers usually need a converter or separate digital audio connection.
Check what inputs your receiver already has
Before buying any adapter, inspect the rear panel of your receiver and identify the available audio inputs.
This determines the easiest and most reliable upgrade path.
Common receiver input types
- Optical digital input: Often the easiest route for TV audio.
- Coaxial digital input: Similar to optical, but uses an RCA-style connector.
- Analog RCA inputs: Works for stereo audio only unless your receiver supports matrix surround processing.
- 5.1 channel analog inputs: Rare on older but higher-end receivers; useful for multichannel sources.
If your receiver has optical or coaxial digital input, you are in good shape.
If it only has stereo RCA, you can still connect the TV, but the audio quality and surround support will be limited.
Best ways to add HDMI ARC to an old receiver
There is no single universal adapter that turns an old receiver into a true ARC-compatible device.
Instead, you can choose one of several practical solutions depending on your setup and expectations.
1. Use the TV’s optical output instead of ARC
Many TVs include an optical digital audio output, also called TOSLINK.
If your receiver has an optical input, this is often the simplest solution because the TV can send audio from all sources, including built-in apps and connected HDMI devices, through that output.
To use this method, connect the TV’s optical out to the receiver’s optical in, then set the TV audio output to PCM or Dolby Digital as supported by the receiver.
- Pros: Simple, inexpensive, stable.
- Cons: Usually limited compared with eARC; may not pass advanced formats like Dolby Atmos.
2. Use an HDMI ARC audio extractor
An HDMI ARC extractor is designed to sit between the TV and external audio gear.
It takes the ARC signal from the TV and converts it into outputs such as optical, coaxial, or analog RCA.
This is the most direct answer to how to add HDMI ARC to old receiver systems when optical output is missing or inconvenient.
Some units also support HDMI passthrough for video sources and may include EDID management, lip-sync adjustment, and downmix settings.
- Pros: Flexible, works with multiple receiver input types.
- Cons: Quality varies by manufacturer; setup can be confusing.
When choosing one, look for support for your TV’s ARC standard, the audio formats you need, and whether it can output 2-channel stereo or 5.1 digital audio.
3. Use an HDMI audio extractor on a source device
If your issue is not the TV’s built-in apps but an external device such as a streaming box, game console, or Blu-ray player, an HDMI audio extractor can split the audio from that device before it reaches the TV.
This works well for source devices connected directly to the receiver or TV, but it does not solve the broader ARC problem for all TV audio sources.
It is useful when you want better control over specific inputs.
4. Use a digital-to-analog converter for stereo-only receivers
If your receiver only accepts RCA analog inputs, you can use a TV optical output or ARC extractor with analog conversion.
The converter changes digital audio into stereo RCA, allowing the receiver to play sound through standard line-level inputs.
This solution is common for vintage receivers and basic stereo amplifiers, but it usually sacrifices surround sound.
If your receiver has a “direct,” “aux,” or “tape” input, this method can still deliver solid everyday TV audio.
How to connect the system step by step
The exact steps vary by device, but the workflow is similar for most setups.
- Identify your TV’s audio outputs and your receiver’s audio inputs.
- Choose the cleanest path: optical, coaxial, or ARC extractor to analog.
- Connect the cable between the TV or extractor and the receiver.
- Select the correct input on the receiver.
- Change the TV audio settings to match the receiver’s capabilities.
- Test volume, sync, and mute behavior from the TV remote.
If you are using ARC, also enable HDMI-CEC on both the TV and any compatible devices.
CEC often allows the TV remote to control receiver volume and power, which is one of the biggest conveniences of ARC-based setups.
Important TV settings to check
TV audio menus differ by brand, but a few settings matter in nearly every setup.
Incorrect settings can prevent sound, create hiss, or force a format your old receiver cannot decode.
- Digital audio output: Set to PCM if your receiver is stereo-only; use Dolby Digital if supported.
- HDMI-CEC: Enable if you want device control and ARC handshaking.
- TV speakers: Disable when sending audio to the receiver.
- eARC/ARC mode: Make sure the correct port is selected on the TV.
Some TVs output multichannel audio only when set to Dolby Digital or Bitstream.
If your older receiver cannot decode that format, switch to PCM for compatibility.
Common problems and fixes
Even a properly wired setup can have issues if the TV, extractor, and receiver disagree on format or control signaling.
No sound from the receiver
- Confirm the receiver is set to the correct input.
- Make sure the TV audio output is not still set to internal speakers.
- Check whether the optical cable is fully seated and not bent sharply.
Audio delay or lip-sync issues
- Use the TV’s audio delay setting if available.
- Look for an extractor with lip-sync adjustment.
- Try PCM output if compressed surround formats create delay.
Volume control does not work from the TV remote
- Enable HDMI-CEC on the TV and connected devices.
- Understand that many old receivers do not support CEC, so an IR remote may still be required.
Sound is only stereo
- This is normal if the receiver lacks digital surround decoding.
- Verify whether the TV is downmixing to PCM stereo.
- Use a receiver input that supports Dolby Digital if available.
What formats can older receivers realistically support?
Older receivers can often handle standard PCM stereo, Dolby Digital 5.1, and sometimes DTS, depending on the model.
They generally cannot decode newer object-based formats such as Dolby Atmos or DTS:X unless those signals are downmixed by the TV or extractor first.
If you want the simplest reliable setup, focus on compatibility rather than chasing every modern audio format.
For most living rooms, a clean Dolby Digital or stereo feed through a well-matched receiver sounds far better than a poorly configured ARC chain.
When upgrading the receiver makes more sense
Adding HDMI ARC to an old receiver is practical, but there are cases where replacing the receiver is the better investment.
If you want eARC, native HDMI switching, 4K or 8K passthrough, Dolby Atmos, and simpler one-remote operation, a newer AV receiver will usually outperform an adapter-based setup.
Still, if your current receiver has strong amplification, reliable speakers, and the inputs you need, an optical connection or ARC extractor can extend its life for years without a costly replacement.