Using Side Chain with outboard?

[jimbojimbo]

Hey guys,

Just trying to get my head around using the Side Chain (or Key Input) with outboard gear and Pro Tools.

Basically, I'm wanting to know a little about the general process and how I can use it with my outboard compressors. I've got a TL Audio compressor and a Focusrite one, both with Side Chain inputs.

I've heard you can use it with an EQ - for example, on a bass drum to compress a certain frequency more?
Or, to use it to lock a bass guitar into the kick drum?

Discuss!