You are guessing at what you think you need. You are wasting time and effort. First, you must quantify and qualify your frequency and amplitude issues. Then and only then can you begin to look at treatment type. Some treatment types only work for some energy types.
I am an acoustic engineer with over 30 years’ experience in the business. My technology has been used in Electric Lady Land Studios, Sony Music of New York, Cello Music and Films founded by Mark Levinson, and Saltmines Studios in Mesa, Arizona, along with hundreds of others.