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Ethereal Home Theater HDM-COAX

Converter Box converts your HDMI input to signal on 4-conductor coax

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Ethereal Home Theater HDM-COAX

Converter Box converts your HDMI input to signal on 4-conductor coax


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The HDM-COAX is the only receiver/transmitter product currently on the market capable of streaming HDMI® signals at long distances using a common, 75 Ohm, RGB coaxial copper cable bundle. As a result, we can provide long-haul cable solutions that deliver 1080p and deep color, along with HDCP® and EDID support, without any degradation in multimedia performance and without the traditionally hefty price tag. We anticipate this technology to enable a wide range of both AV professionals and consumers to experience the full benefits of HDMI.

Today’s long-distance digital cable solutions are incapable of matching the full HD performance of high-end multimedia products such as displays, digital televisions and computers, much less maintaining the required digital copy protection. As a result, consumers and installers unknowingly purchase either lesser-performing, long-distance cables or expensive shorter reach cables. The HDM-COAX helps overcome the significant cost and performance drawbacks of current cabling products. Often, the technology can be used with the existing in-place cable infrastructure to provide ease of use or prevent extensive site construction.

The HDMI-COAX converter box will take a HDMI input and convert it into a 5 conductor coaxial signal. Then the coaxial cables can be run up to 300ft. to the destination of the signal where an identical Ethereal HDMI-COAX converter box will convert the 4 conductor coaxial signal back into HDMI. These converter boxes are perfect if the home theater system already has the 5-conductor coaxial cable running through the walls.

Product Features:

  • Converter Box converts your HDMI input to signal on 5-conductor coax
  • Supports 1080p resolution
  • LED's on the box indicate the presence of absense of data on the various lines
  • Signal can be carried on 4-conductor coaxial for up to 300ft.!
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Adapter Specifications

Adapter Side 1
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Adapter Side 2
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5 Conductor Coaxial
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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Ethereal Home Theater HDM-COAX