I finally got the major furniture moved into my new editing space earlier today. Now that the room is pretty much the way its going to be, I'm ready to get serious about acoustical treatment. I had already run the numbers and the calcs indicated a few probable problem areas. I didn't bother testing the room until the big furniture and equipment were moved in, so that's the next step. If my testing confirms the calculations, I can expect to find a serious problem around 70hz and that means bass trapping. Space is at a premium in this very small room (120SF), so I can't give up large amounts of space to treatment; but I do have one useless corner (due to a veritcal drain pipe) where I plan on installing a corner panel absorber, similar to Fig.3 on this link:
http://www.customaudiodesigns.co.uk/...membranes.html
Today's question: what is required at the top and bottom of this type of absorber? This design has been part of almost all of F. Alton Everest's books, going back to the early 60s; but he never indicated how to close off the top/bottom. I am unable to run the absorber all the way to the ceiling or the floor due to strange construction details at both the floor and ceiling. So I intend to make the absorber stop about one foot short of both the floor and ceiling. Does this need to be a sealed system with a triangular cap screwed into place and then sealed with caulk? These designs have been published in each of Everest's many books, so many of you guys must have built them at some point over the years - how did you handle the end caps?
Thanks.