Sorry to be bearer of not so good news, but acoustic ceiling tiles suck; and they seem like such a good idea in theory, but they do something strange to the phase of the signal; nevertheless, happy if they worked for you just the same...
Best Cheap acoustic wall treatments?
I am converting a 12x20 space into a home theater and want to treat the room. The walls and ceiling are drywalled, with thin carpeting on the floor. Are there any inexpensive wall panels or the like that are available? Should I consider draping the entire room in fabric? Thanks for your thoughts.