Doepfer

Hello Steve

 From that video it is possibile that a pitch knob is somehow noisy.

Another possibility might be, that the power bus in your rack is somehow 
influenced. This may happen with so called "switching power supplies" if 
another module causes sudden load changes on the power bus. This will 
not happen with original Doepfer power supplies.

It would be interesting whether the A-111 still shows these pitch 
changes, when there is no other module mounted in the corresponding 
frame or no other module is supplied by this power supply respectively.

Florian

Am 09.01.2017 um 14:28 schrieb Steve Jenkins:

> Hi Florian,
>
> here’s a link to the video file which shows the issue …  appreciate your comments.
>
> https://www.dropbox.com/s/vbg63xisf1o40tj/IMG_7696.m4v?dl=0
>
> Best wishes
> Steve