A fourth down on a Line 6 M series or a Digitech Whammy pedal. Then play like BEAD instead of EADG. There will be a slight delay in your playing due to the processing and you won't be able to slap, but in a mix it could work.
Step 1. Use octaver..
Step 2. Play original bassline an octave above.
Step 3. You now have a low b.
Do this with a Line 6 BassPODXTLive and it tracks to low G(!?) if you're very careful. It gets used on any song with a 5'er BUT it is not the same. Close enough in a loud club environment and it's amusing to watch players heads turn when you hit notes below low B.
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