How do I separate bass with RePAN plugin?

RePAN separates a stereo mix into a number of different spatial bands. If bass is the only source present in a given spatial band then you can separate bass using RePAN. This sometimes occurs in older stereo mixes, but in most modern mixes, there are typically other instruments in the same spatial position as the bass. These will also be separated with the bass. In order to isolate the bass in this case, you will need to use DeMIX Pro or DeMIX Essentials.