Kibibu helpfully pointed out that Fuzzpilz Oppressor is a much easier sidechain machine than BG Sidechain Dynamics. He is right, so here’s a revised tutorial. If you still want to use BG Sidechain, that tutorial is still available.
If you don’t have Oppressor 3, you need to get it from Fuzzpilz’s site. Our scenario is the same as last time: we have a kick drum and a bass line; we want the bass line volume to duck in time with the kick drum.
This tutorial will teach you how to set up sidechain compression in Buzz using the BG Sidechain Dynamics machine. It took me forever to figure out how to do this the first time, so I wrote it up to save you the time. You’re welcome.
EDIT: Kibibu tipped me that Fuzzpilz Oppressor 3 also does sidechaining, and it’s a bit easier to set up. Here’s this same tutorial using Oppressor instead of BG.
Here’s our initial setup. We have two tracks, a kick drum and a bass line. We want to duck the bass’s volume in time with the kick drum. (Click on any diagram to enlarge it.)