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Design Help: UM10-22

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  • #16
    That would be a total length of 4 ft (48").

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    • #17
      Originally posted by Chris Roemer View Post
      That would be a total length of 4 ft (48").
      Thank you sir, that's quite a port!

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      • #18
        This is 1" wider and 4" taller (gotta add on the space the "slot" takes up). 4 yrs ago.

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        Taller build ...

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        • #19
          Here's a design. 1-11/16 wide ports, 11 tall, 54-something long. Vent velocity at 22.9 meters/sec at RMS, some people like to keep it below 20 at *half* RMS, so that's pretty good. Maybe.






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          MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.

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          • #20
            Here's the sketchup if you wanna try that. I used 0.72 for the ply thickness because that's what I frequently use. Fat 18mm ply.
            MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.

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            • #21
              So I guess they've gutted the ability to post links? The preview worked, but now my sketchup and winisd links don't actually work. What's the recommended way of doing this on this POS forum?

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              • #22
                Originally posted by Chris Roemer View Post
                This is 1" wider and 4" taller (gotta add on the space the "slot" takes up). 4 yrs ago.

                Click image for larger version

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ID:	1428280
                Taller build ...

                Click image for larger version

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Size:	43.4 KB
ID:	1428281

                I had a buddy help me with a SketchUp design using your cf net and a 40' port. I stayed with the port size being 1 1/8" tall and 11 1/2" wide, but stretched the box deeper to keep the height down. When calculating the net internal cf, I don't count the port volume do I? In my model, I subtracted the port volume from the net cf.

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                • #23
                  Correct.

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                  • #24
                    Perfect, thanks! I'll get this one rolling.

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                    • #25
                      Have you considered a 12" PR?

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                      • #26
                        Originally posted by guitar maestro View Post
                        Have you considered a 12" PR?
                        Yeah. Once the port gets that crazy long, it's time to think about a PR.
                        Francis

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                        • #27
                          Originally posted by fpitas View Post

                          Yeah. Once the port gets that crazy long, it's time to think about a PR.
                          I hadn't considered that, but I will on the next design! With a PR, does that replace a port and change the design to sealed? Or just reduce the port length?

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                          • #28
                            Originally posted by fpitas View Post

                            Yeah. Once the port gets that crazy long, it's time to think about a PR.
                            It's not finished yet, but I am building a 1.6cf box with the UM10 that uses the RSS315 PR. It adds $90 to the build but eliminates that need for the port therefor the size of the overall box. Parts Express helped with the modelling they recommended using all 4 weight discs that come with the PR.

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                            • #29
                              Originally posted by Jetfire View Post

                              I hadn't considered that, but I will on the next design! With a PR, does that replace a port and change the design to sealed? Or just reduce the port length?
                              Neither. It sort of acts as a port. You no longer need any other port. It definitely is not a sealed design.
                              Francis

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