Not exactly sure what you mean by tightening the bass, but if you have a bass hump that makes the bass seem overly ripe you might first try moving your speaker position to see if there is a room interaction that is part of the problem. How close to the back wall are your speakers now? Try bringing them out a bit into the room to see if that has an effect. Certainly the cheapest fix I can offer for starters.
Budget Strategies forTightening up Bass?
My system: Opera Consonance 120 Linear CDP, Extensively modded Jolida 302B, Silverline SR 17.5 monitors. AudioArt Speaker wire. Various IC's. Short of buying a sub, what is biggest bang-for-buck upgrade to tighten bass? Wire? PowerConditioning? ("currently" I have just an upgraded cryo-treated outlet) Better footers? (I have vibrapods and cones). I've got about $350 to spend on this... I know-- that's not much-- maybe my goal and my budget are mutually exclusive. Still, any suggestions would be appreciated!