In a previous post I explained how to use the Rotor plugin and the Overdrive to add a bit of drive and Leslie emulation to a real Hammond while recording on Logic Pro X. Further along experimentation with this setup, I’ve ditched the Overdrive plugin, and have switched to using the Distortion II / Growl Distortion Light as a favourite driver for the Rotor Leslie emulation. This gives a very convincing bit of dirt to the sound. Here’s an example:
https://www.wikiloops.com/backingtrack-jam-64805.php