Need to tame bass

Hi, I have a pair of Von Schweikert vr3, love everything about them,just need to tighten up bass.My room is just a little to small,that adds to the problem.Right now I,m using a 8 ft. pair of monster m.75s,would like a speaker cable to tighten things up.Equiment I have: Audio Research LS3 pre., Forte Audio model 5 power amp,h.k.710 as transport,MSB DAC with p 1000 power base,audioquest coral and vampire interconnets.Right now I am looking to buy a pair of transparent plus interconnects that should help quite abit.Your help would be appreciated. P.S. I listin to jazz most of the time. Thanks