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Contributor I
November 16, 2020
Answered

Output impedance of Port?

  • November 16, 2020
  • 2 replies
  • 330 views

My apologies if this has already been answered (couldn’t see anything when searching though). What is the output impedance of the Port’s line output? I’d like to drive a fairly long cable (5m), so low impedance would be good..! 

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Best answer by ratty

It’s not declared anywhere in the spec, and I very much doubt you’d get the information from Sonos Support. The output impedance is likely to be small, especially in comparison to the input impedance of the downstream device. 

A cable of 5m is not that long anyhow, but make sure it has a decent cross-sectional area and is adequately screened. I’d be more concerned about noise than any tiny voltage loss.

2 replies

ratty
rattyAnswer
November 16, 2020

It’s not declared anywhere in the spec, and I very much doubt you’d get the information from Sonos Support. The output impedance is likely to be small, especially in comparison to the input impedance of the downstream device. 

A cable of 5m is not that long anyhow, but make sure it has a decent cross-sectional area and is adequately screened. I’d be more concerned about noise than any tiny voltage loss.

blib_blibAuthor
Contributor I
November 16, 2020

Ok thanks ratty 👍