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Oak ultimax sub build

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  • Oak ultimax sub build

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    I got the go ahead from the lovely wife to build another sub. The only qualification is that it needs to match our entertainment center. I ordered a flat pack for the 18 inch ultimax for core of the project. The last couple days was spent putting the flat pack together. Today I'm working on wrapping the core with 3/4 oak. It's going to be a heavy sucker. I'm still working out how I want to finish the front, I'm toying with the idea of wrapping the front cover with vinyl carbon fiber.
    SPA 1000 wide assortment of clamps
    Last edited by Scuba_fd; 11-30-2018, 05:40 PM.

  • #2
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    Last edited by Scuba_fd; 11-30-2018, 05:40 PM.

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    • #3

      Cut out the hole for the amp and started styling the corners
      Last edited by Scuba_fd; 11-30-2018, 05:44 PM.

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      • #4
        That is going to be a heavy beast!

        I would have done veneer,but I like your idea of full panels better. Those walls are going to be thick!

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        • #5
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          Putting in the upper and lower styles on three sides. It will have the same inset panels as the end of the entertainment center I built several years ago. It pained me to cut bracing out for the plate amp, but with inch and a half thick side walls, I'm not concerned about flexing. I'm still racking my brain on how to finish the front.
          Last edited by Scuba_fd; 11-30-2018, 05:53 PM.

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          • #6
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            Work finished the last couple days. Panel molding installed and rough sanded the oak lumber. Started working on the front. There is limited space on this panel, so I made the styles just big enough to be equal distance on all four sides to the round over on the baffle
            Last edited by Scuba_fd; 11-30-2018, 05:38 PM.

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            • #7
              Click image for larger version  Name:	 Views:	1 Size:	755.3 KB ID:	1395313Click image for larger version  Name:	 Views:	1 Size:	603.0 KB ID:	1395314Click image for larger version  Name:	 Views:	1 Size:	681.3 KB ID:	1395315
              I laid the front baffle in the panel and it's sitting too low. I added a 1/2 inch sheet of plywood for a spacer. The baffle sitting out proud looks better
              Last edited by Scuba_fd; 11-30-2018, 05:38 PM.

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              • #8
                Click image for larger version  Name:	 Views:	1 Size:	522.9 KB ID:	1395353Click image for larger version  Name:	 Views:	1 Size:	697.5 KB ID:	1395354Click image for larger version  Name:	 Views:	1 Size:	697.0 KB ID:	1395355
                This evenings tasks.
                1. glued on the top and edge trim
                2. rounded over the MDF that I cut to fit driver side
                3. started final sanding with 220 grit

                I heaved this thing on a scale. Empty it's coming in at 98 Lbs. With the driver and amp, it'll be around 165 Lbs. Gonna need a dolly to get it in the living room
                Last edited by Scuba_fd; 11-30-2018, 05:37 PM.

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                • #9
                  you've really transformed the way the enclosure looks.

                  strong work -- can't wait to see the final product

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                  • #10
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                    Been thinking about the baffle. I want it to be removable, so if I get tired of the finish, I can take it off and rework it. With that in mind, I was worried about vibration problems on something that is not glued on. I'm not worried about the area where the driver is going to be bolted, but I am a little concerned about the corners. I drilled 1/4 inch holes near the corner. Then used a forsner bit to counter sink the hole so the bolt heads are under the surface. Then I drilled several holes inside the counter sink. I filled the countersinks with the bolts in place with epoxy. I'll finish filling the countersinks with bondo and sand the surface smooth. I'm pretty confident this will hold.
                    Last edited by Scuba_fd; 11-29-2018, 11:46 AM.

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                    • #11
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                      Things done today
                      1. Filled and sanded the holes for the removable baffle
                      2. Installed nutserts
                      3. Finish sanding completed
                      The SVS sub feet came in today. I ordered some threaded inserts for the sub to mount the feet. I'm going to start staining tonight or tomorrow. I'm beginning to like the looks of it

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                      • #12
                        Click image for larger version  Name:	 Views:	1 Size:	708.9 KB ID:	1395578Click image for larger version  Name:	 Views:	1 Size:	453.9 KB ID:	1395579Click image for larger version  Name:	 Views:	1 Size:	680.5 KB ID:	1395580Click image for larger version  Name:	 Views:	1 Size:	453.4 KB ID:	1395581Click image for larger version  Name:	 Views:	1 Size:	702.6 KB ID:	1395582
                        Two things done this morning:
                        1. Applied red oak stain
                        2. I've discovered vinyl wrapping is not the life for me. I watch countless youtube videos saying all you need is patience. Obviously that trait eludes me. Maybe no one will look closely and say "Dude, your corners are wrinkled". I have enough material for a second try if it bothers me too much.

                        Tomorrow I'll start putting the shiny stuff on it.

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                        • #13
                          Very nice! Interesting combination of oak and the carbon fiber look, where the 70's and the 21st century meet back around again! Put the driver in, gotta see what that carbon-on-carbon looks like.

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                          • #14
                            Work completed over the weekend:

                            1. The stain wasn’t as dark as I wanted. I applied another coat, rubbed it in and the color is where I want it now. The nail hole filler took the stain too good, I’ll get used to it.

                            2. First and second coats of poly applied followed by a scrubbing with 0000 steel wool. I’ll spray the third and final coat this week

                            3. Put gasket material on the removable baffle.

                            4. The grandkids came over and I told them the bottom of the cabinet was theirs. They went to town with the sharpies. When they were done I sealed their art with poly.

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                            • #15
                              Got the third and fourth coats of poly on. Installed the amp. Bolted in the baffle and started stuffing and netting in four pounds of material. Tomorrow night I’ll finish the stuffing and finally install the driver. Sent from my iPhone using Tapatalk

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