I'm building 2 of DIYSoundGroup's Stonehenge 18" ported subs for my HT. I'm planning on loading them with UXL-18s when they get back in stock. I figured I'd start a build thread for them.
If you are on the fence about ordering anything from DIYSoundGroup, don't be. The kits go together ridiculously easy and are perfectly packaged and cut. I've ordered about 15 speaker kits from Erich and they all sound awesome after they are done.
I used Gorilla Wood Glue for the glue, 6 36" harbor freight clamps, and a couple 12" harbor freight clamps. And 2 tubs of green glue.
Step 1: The bottom braces were easy. I did those first (didn't take a photo).
Step 2: the 4 upright stonehenge stones next to the bottom braces.
Step 3: The other 4 stones. This is how I put pressure on them while the glue set. It helped to have a couple heavy tubs of green glue laying around to use as weight.
Step 4: I did each of the 2 side braces separately. This is with them all done.
Step 5: Side A and Side B. I did them at the same time. I used tubs of green glue for vertical pressure and a couple clamps (I put them on after this photo) to provide lateral pressure between A and B.
Step 6: Clamping on side C. I used a few 36" clamps to provide downward and lateral pressure as well as a couple 12" clamps to make sure there was a secure connection between the side and the side brace.
Step 7: Side D. Same as Side C. I didn't take a photo of this since it was the same as Step 6.
Step 8: Side E, used a couple clamps underneath, as well as some running the length and top to bottom. You can barely see the little wood brace that Erich includes to give some rigidity between Side A and side E. I probably should have put it midway in there, but doesn't really matter I don't think.
Step 9: Side F, last side. I had to get a little creative here since I needed top to bottom pressure as well as lateral pressure. I decided to use clamps to clamp side F to E, and then use buckets of green glue to give top to bottom pressure. It worked okay. I also put another one of the block braces midway between the port entrance and where it curves to side E.
I am lining the back wall and sides with 1.5" acoustic eggcrate foam. I think this will work well - don't want to stuff it since it is ported. If you guys have any suggestions if I'm doing the right thing or not, let me know. I still haven't put the front on it yet (going to wait until I get the speakers - and I also have to mount a speakon connector in the box somewhere. Being shipped from PE right now).
Back wall done:
And sides done:
Anyone have any comments/suggestions or notice if I did anything wrong? I'm by no means an expert at doing this so if I made a mistake, please let me know!
I'll update this thread as I make more progress on them, but right now I'm starting on the other one.