MOTM

thanks for replying, john! :)

> 1/ multiple outputs to mults
> 
> While this may not damage the modules, it is certainly not 
recommended.
> The outputs are low impedance stages and are not meant to be
> crosscoupled. The mults are for taking a single output to multiple
> inputs.

i 'd better get a mixer module, then.

> 2/ audio to 820 Lag
>  It might be the result of the Lag responding
> only to positive voltage swings, but we need more information here.

i will check and post extensive information asap.

i discovered this behaviour by accidently shorting ring and tip from 
a patchcord plugged into the 820's 'audio in' with my fingers.

> 3/ 420 astable oscillation
> 
> I haven't tried this, but this may be natural since that filter is
> designed to have some nonlinear characteristics.  Do you have audio
> inputs to the filter?  This can effect the oscillation near the
> oscillation trip point.

no inputs at all, just the 420 oscillating near trip point.

i noticed just slightly delayed reaction from the freq and q pots 
too, btw, which makes it annoying to set the trip point at an exact 
position around self-oscillation.

perhaps this happens when the module is still 'warming up'. i'll 
check for that too.

greetings,
gregory!