TV Speaker duct

I have a 32" LG mounted above my triple monitor setup. Unfortunately the speakers come out the bottom and the sound is directed away from me and across the room so I came up with this sound duct to redirect it up and over my computer monitors. There are 2, the 2nd is just a mirror of the 1st. I'm having to make it in several pieces and acetone glue them together. More pics to come as I finish printing the duct pieces out.

Final Update: All done, the Acetone glue solution worked like a champ for assembly. I had a bad surprise when I went to fit it to the TV when and the Support arms for my monitors was about 1cm in the way. So off to the miter saw where I set up a support block to hold it at the right angle while I very carefully and slowly cut off the offending section. I would print out a flat piece to match what I had to cut off but another part was in the printer, so I just cannibalized a DVD case. I can't see it anyways and it got the job done.

As you can see from th