Where to place sonic exciter in signal chain.

Hi, In my studio, I currently have a mic connected to a mixer via a DBX 286S Processor (the mixer is then connected via USB to a PC). I've just bought a Behringer SX3040 Sonic Exciter to give my voice a bit more bottom end. Where should I place the SX3040 in the signal chain? Before or after the DBX Processor? I would very much appreciate folks' advice. Many thanks.