Am I using the right speaker cables?

I’m with jeneral as far as placement goes. Both where your speakers are AND where your listening position is, have a significant effect on what you hear, bass in particular. I set my gear up with the speakers 1/3 of the way from the front wall and my listening position 1/3 of the way from the rear wall............excellent bass, deeper, tighter, cleaner and everything else improved along with it.........and I don’t have mega-buck cables or interconnects.

You may also consider room treatment...All rooms have problems, all rooms have bass problems. This can be addressed for a very reasonable amount of money and when done well, can make a huge improvement in everything.

I doubt that your cables, any cables, would make as much difference as proper set up.

Until you get your set up right, anything else is a waste of $$$.

+1 shadowcat2016! Speaker placement in a room is the most basic and vital aspect to obtaining optimum SQ!

Jake,
I use Purecable  nano Cayenne ( the Netherlands): they are very pure in sound:natural high ,mid and low. Very inportent is the position of your speakers. Turn tem. 7-9 ° to the middle. Find out,
the distance from te wall. But  watch out for resonance. Møre low agaist the wall, and Visé-versa. See that you practical sit in a triangle. Even use bass traps. Also inportent is ,using good powercables and i use also the audioquest niagra 1000 ( netfilter) A good synergie beween high-mid-en low is very important. You have to feel “the Music”. Figure it out, and  test everything on your hearing.

You can try some transparent ultra cables. Much better bass but with a tradeoff of less air and high frequency extension.

Cables which I know have solid bass are Siltech Royal Signature series and Stage III Concepts. Purist Audio Design also has good bass. Of those, i'd probably start with Stage III Concepts and PAD.