Agree with all the comments above and add that some cables can help tighten up bass and your suggestion of Nordost is a good one, which worked well for me in the past. Another way is to have a better and more powerful amp.
improving bass on large floorstanders....
I have some 3 way tower speakers that could use some bass improvement...however...if the results are minimal...i probably will pass...at any rate...would the addition of floor spikes or possibly a cable change be the answer?...I am looking for tighter, leaner bass if possible...thinking entry DH labs or Nordost...at any rates...what has worked/ not worked for others?