Tara Labs Reference Generation II interconnects can be had for around a hundred bucks used. If that doesn't cure the nasties and you have played around with speaker placement...it's not gonna happen. If it helps, but still doesn't quite get you there, Tara Labs Ref Gen II, Master or Decade speaker cables might take you the rest of the way.
As far as room placement goes, I'd address sidewall reflections as top priority and try to take advantage of the room boundaries to give them a little more bass kick.
If you want to try the Tara IC, I have a one meter pair that you are welcome to see if they help. I would only ask for a 100 dollar deposit that I would naturally return upon return of the ICs. I'm not trying to sell them, just offering to let you see if they can help your problem.
There is nothing more annoying than listener fatigue.
As far as room placement goes, I'd address sidewall reflections as top priority and try to take advantage of the room boundaries to give them a little more bass kick.
If you want to try the Tara IC, I have a one meter pair that you are welcome to see if they help. I would only ask for a 100 dollar deposit that I would naturally return upon return of the ICs. I'm not trying to sell them, just offering to let you see if they can help your problem.
There is nothing more annoying than listener fatigue.