Ya you got it right basically. Low impedance will drive a speaker
directly and high impedance is meant to drive the input of an
amplifier. High impedance lines are sensitive to picking up noise and
are often of the shielded variety.

(JFLEISC) wrote in message ...
I could use some wiring help here. I'm not that good at the terminology but I
know that and always ask advice, so things usually turn out right.
Question; I'm wiring in a used DME and the ident (audio) output has a choice of
'high impedance out' or 'low impedance out'. What's the difference? Is one for
direct to headset and the other for going through the amp in the nav/comm
receiver or something like that? Thanks in advance.

Jim