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Martin Griffith Martin Griffith is offline
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Default OK to use TV coax for microphone?

On Sat, 3 May 2008 17:01:19 +0100, in sci.electronics.design Ian
Jackson wrote:


Out of interest, how does the capacitance of ordinary TV coax (which
will be 75 ohms, of course) compare with 'proper' mic cable? Of course,
a lot of audio is balanced (usually nominally 600 ohms), which makes
things generally less prone to the pick-up of interference. Unbalanced
connections via coax (even if proper screened audio cable) is
less-tolerant.


600 ohms is dead and buried, for the audio world.The only time it is
mentioned is in data sheets, "will drive XXdB into 600R" etc


martin