Listen to the following video and take note of the resonance of the bass on those clips. I'm wondering what effect is used to add that resonance. (I know some of those bass guys wouldn't sound that good without the extra effect) I have tried everything that my program has to offer and I have been able to improve low bass vocals quite a bit, but I'm sure there's more that could be done.

The Ultimate 19 minute Bass singers video - YouTube

I have a voice track that was sung in a vocal-fry and I'm rambling for ways to enrich it more.

Any tips?