Doepfer

Hi Ethan, Tim, Florian and Bakis,

Thanks for all this great info!
I have been experimenting with the options you gave me. 
I noticed some strange things.
First I patched the A-110 into the in of the A-131 (Exp.)
and turning up the gain, nothing was heard until I 
reached position 6. I repeated the same experiment with
the A-130 (Lin.) I also began to turn up the gain and
immediately at position 2 I began to hear the continious
drone.
So there's the big difference which must be due to fact
that one is the exp. and the other the linear VCA.
Now, I'm curious at which position will they be equal in
volume. Can it be before they reach full gain?
Nop, your right Florian both are equal in volume only 
when they reached full gain (=10).
So I happily conclude that there's nothing wrong with
my VCA's!
Before I forget the both in's were at position 8. And the 
general out also on position 8.
But when I turn both in's (from the two VCA's) to 10,
I immediately hear that the linear gives more power!

I also have to say that I directly plugged the A-100 out to
my mixer in this case. 

In the next example I patched 3 waveforms (pulse, triangle and
sinus) into the A-138 mixer, the out of the mixer goes to 
the audio in of the A-121 Multimode filter. Filter low out
first into audio in of A-131 and the A-130 (settings of the
VCA's are the same as above). There's barely any change.
Same picture the linear gives a slight more power then the
exponential. 

Now, when I plug the low out of the A-121 directly in the
input of the A-138 mixer (lin) the volume is cranked up
several levels. How come? Using this mixer means a more beefed
up sound then using one of the VCA's???
I believe this picture will be the same if one uses the
A-138 mixer (exp)! Or am I wrong here?

Can anyone tell me what's the difference between 
the A-138 exp and lin. mixer? 
The same goes for both the exp and linear VCA's.
I have to expand with more VCA's, cause 2 are to little.
But which one should I take?
Any ideas!

Thanks,

Roel.