"Drop" Ceilings (grids) and Acoustic Treatment in Phil O'Keefe: In The Studio Trenches Posted April 19, 2009 i just finished the room as a bedroom. So I am looking for a temp solution to reduce the upper high range. Hang some absorbent stuff a couple inches off the wall and you should be fine. Next time I'm sentenced to that part of the world get a poker game together and a good bottle of Scotch and I'll give you chapter and verse how to fix it. Hope all is well!! Fun seeing you in ze Fatherland!! Peace.