Doepfer

Hello,
I just bought a used A134 and I have a question about it.
It is exhibiting behavior I do not see explained in the manual.
At first I was getting no signal from the right side output.

My confusion is the following: I have a signal going into Audio in 1 
and nothing going into Audio in 2. The Lev1 knob seems to control 
the volume at the Left output and the Lev2 knob (previously turned 
down to zero because I had nothing going to that input) apparently 
controls volume at the Right output

Is that normal behavior? I see nothing in the manual about the Lev1 
knob being connected to the Lft out and the Lev2 knob being 
connected to the Right out.

Help please.

Thanks,
Rafael