I have a new secret (not very) weapon & it looks a bit like this:

LowEnder is the first plugin to provide a digital replacement for the much loved & adored dbx subharmonic synth. I’ve had an analog outboard subharmonic 120XP for ages & regularly print sounds through it to re-record the sub bass effect it does so well but its always a slight hassle patching & riding analog gain, but there really hasn’t been another option until now. Lowender is made by reFuse software & is built on the pluggo engine by cycling 74 & while some of the pluggos around can be fun but not regularly used, this is one plugin thats getting a lot of use! Lowender is compatible with VST, RTAS, and AU hosts on Macintosh OS X.

Download the demo, available at the reFuse site

And check out a few sounds, each file is played first clean, followed by two different settings

download metal hit FX lowender demo 1 mp3

download wood hit FX lowender demo 2 mp3

download wood hit FX lowender demo 3 mp3

FWIW there are some demo music files on the reFuse site