808 Bass in Reason

hey guys,

I am using Reason 5 (don't judge me) and am trying to produce a good sub bass for trap music etc. using Thor.

the only issue I am having is a hissing sound i can hear in the tone any time I play in the lower register.

here is the tone I am producing right now

I want to have a clean sub so am wondering how to get rid of this sound to produce a nice clean sub as in this one

PLz help! I have messed with Filters and EQs to no avail. this seems to be a very common sound in most Sub bass samples you can find on the internet which is why I am trying to make the bass with thor

thanks in advance!

-2nd Prez
Warzone Beat Battle