Hi Peter

I havent done anything yet, exept drawn some sketches.

I am trying to do a succesfull design; trying to avoid the pitfalls.

IIC? Maybee, but I would need two 8574's just for controlling relais.

There isnt just one atn. The project is to control several bi-amped speakers in a (rock'n roll) venue. So I imagine something like a 3U cardframe with minimum 8 cards, each with one atn. and its control circuits.
Each atn. is then adjusted when the system is aligned, and the values stored.

I want to display the atn. value on some sort of display: "-2db".


comments and thoughts appreciated

ha' en fortsat god dag

Per Guldmann