On Monday, 2 March 2015 21:00:06 UTC+10, pete purdie wrote:
Not if it's a hybrid transformer

http://en.wikipedia.org/wiki/Hybrid_coil

Thanks Pete, will check it out


I still would bet on sufficient independant speakers being the optimal
solution.

So it would seem, but as I am up to four (radio,two electronic varios, one with two outputs), I thought that there must be a better way.



Second best is amplitude and impedance matching the vario output
into the aux audio input of the radio (with the bonus, or drawback,
that the vario output would be muted when receiving or transmitting.
No Outputting an 8 knot climb audio signal to your struggling
competitors)

I carry a special instrument for that

Cheers

Paul