Some great replies - thanks folks. I was putting together a bass synth board (in my head at least) ready for a gig on Thursday.
Time was against me so I ended up just taking a synth pedal which is such a cop out I know.
I plan to revisit the project today. Planning to include the EHX Blurst with an expression pedal attached, which I thought might be fun.
Here's the chair top experimental board
I'll have to put a SoundCloud clip up. It actually sounds good.The Blurst I'm not sure about. Doesn't really add anything.
What I've learned is that the compressor is important before the dirt and octave. A little of the clean sound with the octave down helps tighten things up too. The filter twin is the absolute icing on the cake. The best filter I found in this set up. The noise gate I think I need, but I'm not sure. We all like a little glitch as the note fades, don't we?