Just a quick update.

My powerone psu arrived just before the weekend. This is a 1.5 amp unit, that should be well within bounds for my 4 row system.

And, unfortunately, it does not rid me of the lfo interference.

To outline, the easiest way to spot this is to have a couple of vcos, with one FM ing the other. Listening to the carriers output,
it is audibly quite clear when the lfo freq dial is turned.


In the case of my system, the lfos are even on different rows, with each distribution board 'star'ed' from a single point.

[ http://www.port23.co.uk/synthdiy/a100/wireing.jpg ]

My plan now is to increase the gauge of my grounding wires a lot (not that theyre small at the moment), possibly even running a
separate line from each bus back to the common point on the psu. And then maybe look at capacitance on the supply rails.

But my point is, that, should you be having interference issues, then a larger psu may not be a simple answer for everyone.

Julian


ps. anyone know about lfo revisions