Each of the 6 columns have speakers in them. The front two on the side walls act as the "wide" speakers, the rear two on the side walls are the "surround - left and right", and the two columns on the rear wall are the "Rear Surround" channels.
I built the columns out of 3/4" MDF and used Titebond glue and Kreg Jig Pocket Holes to hold them together. After the glue dried for a day I removed the screws from the pocket holes so I could use a router to round the edges. The screws were too long and would have hit the router bit. The glue holds just fine on its own.
The total column dimensions are 14" wide by 6" deep. I had to mount them 2.5" off the wall for the front wide speakers as the In Ceiling speakers I used as the wides are about 7.5" deep. The columns on the rear wall were also moved out so they would be flush with the two Monster Bass Traps from GIK Acoustics.
Kreg Jig Pocket Holes to hold together until the glue dries:
Jigsaw cutouts for the Triad in wall surround speakers:
Part of the assembly line:
Painted Mouse Ears Black:
Triad In-Wall Surround added:
Triad In-Wall Speaker Grill Added - HOPE IT DOESN'T SHOW UNDER THE DMD BLACK FABRIC!!!!
Original "Built in" Column Location - DO NOT BUILD YOUR COLUMNS UNTIL AFTER THE DRYWALL STAGE - Build them separately....
Luckily it was very close to where I needed it to be. But I did have to make the opening bigger to fit the Triad Speaker:
View of the Triad In-Wall Surround attached to the Column:
YAY!!! - The White Grills don't show through the DMD Black Fabric! Looks like I probably didn't need to paint the columns black either!!! Oh Well - at least I know the paint is there
This is installed over the original drywall column:
Rear columns flush mounted with the GIK Monster Bass Traps. I joined two Monster Bass Traps together and covered with DMD Maroon Fabric:
View of the back of one of the the "wide" speaker columns. Still need the DMD fabric stretched and stapled in place: