Audio Videoplayer audio output using one single channel

Hi, is it possible to play a videoclip audio using only one channel?
I tried this:

1. Set videoplayer audio output to audio source
2. set the audiosource to 2D and use the stereopan slider to pan the output audio on the L o R channels

Result: the audio pans, but I cannot get a single audio channel output. If I setspan to -1 for example, the Left channel is higer than the Right one, but I can still hera something from the right channel.
The same setup works perfectly for a simple audioclip.

What I am missing?

 

Anyone?

 

Thanks for the information. I did not know that.