[simpits-tech] Intercom

[Roy Coates]

On Mon, 6 Oct 2003, Ben Jones wrote:

> This should be easy 'ish you only have to make the intercomm think that it
> has a aircraft headset pluged into it .
>
> >From what i understand is that the only problem with using a "Normal"
> headset on a intercom setup is the impedence problem from memory a aircraft
> headset  speakers run around 1000 Ohms  versus a normal head set that might
> run around to 4 - 100 ohm mark .
>
> I cant rember if that is 1000 ohms both  or 1000 ohms for each individual
> speaker ,  maybee it might be easier to just replace the 2  speakers with i
> higher impedance speaker off the shelf from a electronic outlet , to make
> these headsets compatible with a aircraft intercom...
>
> Please anybody let me know if i'm wrong..... , its been a while since i have
> repaired a aircraft headset .


iirc there's something about a bias voltage too ?


Roy.