Cable Matters 48Gbps HDMI Audio Extractor with eARC (103104) – Installation and Troubleshooting

The Cable Matters 48Gbps HDMI 2.1 Audio Extractor with eARC (Model 103104) de-embeds audio from an HDMI source or TV with eARC/ARC, outputting to HDMI, digital S/PDIF (optical), or analog audio devices like soundbars, amplifiers, or AV receivers. It supports up to 8K@60Hz video and advanced audio formats (e.g., Dolby Atmos, DTS:X), with features like CEC control and EDID management.

Important Notes Before Using

Setup Guidance

  1. Unpack and Verify Contents:
    • 1x 48Gbps HDMI Audio Extractor
    • 1x 5V/2A International Power Supply
    • 1x 6 ft HDMI 2.1 Cable
    • 1x User Manual
  2. Connect the Devices:
    • Power: Plug the 5V/2A power supply into the “DC 5V” port and a wall outlet. The red Power LED should light up.
    • HDMI Source: Connect your HDMI source (e.g., Blu-ray player, gaming console) to the “IN Source” port using an HDMI 2.1 cable (max 3m/10ft recommended). The green IN LED should illuminate.
    • TV: Connect the “OUT TV (eARC)” port to your TV’s HDMI eARC/ARC port with an HDMI 2.1 cable. The green OUT LED should light up.
    • Soundbar (Optional): For eARC/ARC audio, connect your soundbar’s HDMI Output to the “eARC OUT Soundbar” port. The green Soundbar LED should activate.
    • Amplifier (Optional): Connect an amplifier to the “AUDIO OUT Amp” port (HDMI) or “OPTICAL” port (S/PDIF) for non-eARC setups. The green Amp LED should light up if connected
  3. Enable eARC/ARC (If Needed):
    • Press the “eARC” button to toggle eARC/ARC mode:
      • On (Solid eARC LED): Audio returns from the TV (eARC/ARC enabled).
      • Off (No eARC LED): Audio comes from the HDMI input source
    • Ensure your TV’s eARC/ARC setting is enabled in its audio menu.
  4. Configure EDID (Optional):
    • Use the EDID DIP switches (labeled “EDID OP”) to adjust audio/video compatibility:
      • Default (111): Factory settings—try this first.
      • Refer to the manual for other settings if audio/video issues occur 
        
  5. Test the Setup:
    • Power on all devices. Check that LEDs (Power, IN, OUT, Soundbar/Amp, eARC) match your setup. Play content to confirm video on the TV and audio through your soundbar or amplifier.

Troubleshooting Guide

  1. No Video or “No Signal” on TV:
    • Verify that the TV’s HDMI input is set to the eARC/ARC port connected to “OUT TV (eARC).”
    • Ensure the source is plugged into “IN Source” and powered on (IN LED should be green).
    • Test with a different HDMI 2.1 cable (max 3m/10ft) for both input and output
  2. No Audio or Audio Skipping:
    • Confirm connections: “OUT TV (eARC)” to TV’s eARC port, “eARC OUT Soundbar” to soundbar’s HDMI output, or “AUDIO OUT Amp”/“OPTICAL” to an amplifier.
    • Test direct connection: Connect the TV’s eARC port straight to the soundbar to isolate the extractor.
    • Adjust TV audio output: Set to PCM or Dolby Digital first, then retry Atmos/DTS:X.
    • Power cycle: Unplug all devices (extractor, TV, soundbar) for 1-2 minutes, then reconnect
  3. Intermittent Connection or Flickering:
    • Test with a different display or soundbar to check compatibility.
    • Reset the EDID to factory default (DIP switches to 111).
    • Ensure cables are HDMI 2.1-rated and under 3m/10ft
  4. eARC Not Working (Flashing eARC LED):
    • Verify that the TV and soundbar support eARC and that it’s enabled in their settings.
    • Press the eARC button to toggle mode—solid LED means eARC is active; flashing means a CEC/eARC issue.


Article ID: 184
Last updated: 12 Mar, 2025
Revision: 4
HDMI -> Devices -> Cable Matters 48Gbps HDMI Audio Extractor with eARC (103104) – Installation and Troubleshooting
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