In article ,
Lou D oldradios.com wrote:
Scott Dorsey wrote:
Lou D oldradios.com wrote:
What is the input impedance for this unit. I had thought these were used
with a 500 -600 ohm output. I was informed it was 6000 ohms but that
sounds high to me.

What's the DC resistance? It should be around a tenth of the impedance
at 1KC.

The DC resistance is 280 ohms.

I would suspect it to be higher than 600 ohms at 1 KC, then. If you want
to be absolutely sure you can make a bridge with a true RMS voltmeter
and a 200CD.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."