The Kemper Kabinet was not designed for bass. Any suggestions for an 1x12 bass cab to fit the Kone in?
I don't understand the need for a full range kone for bass? A standard tuned 4 string bass ranges from a low E to a D# at the 21st fret on the G string. That's only a frequency range of 41 to 311 Hz.
Have you considered an Electrovoice TL606 cab?