Doepfer

> Dear group,
>
> Just like Bakis I want to wish you all a good 2012!
>
> But now, something completely different.
>
> When plugging in headphones in an audio out connector (VCA,
> mixer) I hear both the left and right channel.
> However, if I route the audio out through a multiples, the audio
> signal is halved, only the left channel is left.
> Is this caused by a difference in the audio out and multiples connectors?
> Hope someone can tell.
>
> Warm regards,
>
> Ton

Also from me Best Wishes for the New Year!

The mechanical construction of monophonic 3.5 mm jacks and plugs is
different from stereophonic versions. Parts of the long GND sector of the
monophonic versions is used in the stereophonic versions as the second
signal. It depends upon the mechanical tolerances and the plug-in depth what
happens if a stereophonic plug is connected to a monophonic socket.
Typically the second stereo signal will be dead as the corresponding sector
of the plug is not connected or connected to GND (depends upon the
mechanical details of the monophonic jack socket). But there might be an
intermediate plug-in position where the monophonic signal appears on both
stereo channels.

As there exists no technical specification that describes what happens if a
3.5 mm stereo plug is connected to a monophonic 3.5 mm socket you will have
to try it out. In the A-100 two different 3.5 mm sockets are used (vertical
and horizontal) and maybe they behave different.

Best wishes
Dieter Doepfer