Something else that might improve bass depth and clarity would be to decouple the speaker cabinets from the floor. You can make inexpensive decouplers with Moongels wrapped in adhesive felt drawer liners. These worked wonders in my system. If you hear a worthwhile difference, you will find many competent commercial decoupling systems that work well.
If your power amp is ~ 20 years old, it is likely that replacing the four large electrolytic filter caps also will help with bass and overall performance. Obviously, replacing caps is a more difficult and expensive project to consider.
All other above suggestions are well worth trying also. Good luck in solving your problem.
If your power amp is ~ 20 years old, it is likely that replacing the four large electrolytic filter caps also will help with bass and overall performance. Obviously, replacing caps is a more difficult and expensive project to consider.
All other above suggestions are well worth trying also. Good luck in solving your problem.