> Hi,
>
> I seem to be having a problem with my A-105 SSM LPF.
>
> If I modulate either of the cut off (FCV1/FCV2) inputs with any
> shape from an LFO, I get a loud audible click coming from the
> filter as the LFO goes through it's cycle - with audio going in
> to the filter or not... also with resonance set to zero or otherwise.
>
> I have tested other Doepfer filters with the same lead/LFO/ etc
> and the problem does not materialise.
>
> Any suggestions, please.
>
> Best wishes

I suppose that the module is faulty and has to be repaired. Maybe the SSM
circuit is defective but it may be also another circuit. Please return the
module for repair to the dealer where you purchased it.

Best wishes
Dieter Doepfer