Yeah, I'm familiar with duckers, having worked with guitar effects (I've got a digitech unit that implements a modular ducker in the effects chaing that's pretty nifty). I just didn't mention it in my post because I thought things might get confusing.

But it's a good idea. If the Aux mixing was done in software, you could definitely implement a ducker. It could work for nav units, hands-free cell phones, whatever.

___________
Tony Fabris