It might be better in a particular bandwidth than the rest of the freq range. Perhaps you could get one order and place on the side walls on each side close to the speaker and see how it works that way. You could also temp glue onto something you can take it off easily if you decide to get more and need to change the panel.
Cork room treatments
Has anyone used dimensional cork as room treatment?
Is it effective? Unfortunately I don't have the luxury of a dedicated listening room. My system is in the family room adjacent to an open kitchen. So bass traps and GIK panels everywhere are not an option. I do have a few GIK panels that are wife approaved strategically placed. To improve my room more without making it look like a recording studio we are considering dimensional cork panels. Has anyone tried cork? Any thoughts?