BBQracer Posted March 1, 2017 Report Share Posted March 1, 2017 So, I built this box thinking I knew what I was doing....... I didn't, I was going to port it but after screwing up my calculations I was told I would need a mile long port. I guess I'll be sealing the box now. So to simplify the effort I'm going to ask people who know WTH they are doing. Below are the specs. Do I just seal it up as is or should I reduce the box size? The current box is as big as it's going to get. It was built to fit under the rear seats in my Ridgeline. Speakers VFL-8D look at using NVX DA7501 for my amp Drawing1 Model (1).tif Link to comment Share on other sites More sharing options...
Triticum Agricolam Posted March 1, 2017 Report Share Posted March 1, 2017 Your image for the box dimensions isn't showing up for me, so I can't give you any specific recommendations. However, sealed boxes are really hard to screw up and will work with a wide range of box sizes. Unless your box is WAY oversized you are probably fine. If you tell me what the internal volume is I'll be able to give you a better answer. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds: Link to comment Share on other sites More sharing options...
BBQracer Posted March 1, 2017 Author Report Share Posted March 1, 2017 Currently each speaker is in a .85 c.f. box. Link to comment Share on other sites More sharing options...
Joe X Posted March 1, 2017 Report Share Posted March 1, 2017 OP where did you get the mile long port claim. that's false, there's a ported box for two of those subs posted a few pages back that you may want to examine, the 0.85 cf per driver on rated power would be ok for sealed but those subs will lack low end significantly on sealed, I would recommend rebuilding your box properly using a ported design. Link to comment Share on other sites More sharing options...
BBQracer Posted March 1, 2017 Author Report Share Posted March 1, 2017 AudioVideoScience is where I got my advice. They helped me build my home theater. I'm not sure why it will not take my URL. Below are the images. I will try to link them again during lunch. Enjoy all of my pictures I guess. http://s178.photobucket.com/user/sharijames2002/media/Drawing1 Model 1_1.jpg.html http://s178.photobucket.com/user/sharijames2002/media/untitled.png.html Link to comment Share on other sites More sharing options...
BBQracer Posted March 1, 2017 Author Report Share Posted March 1, 2017 Link to comment Share on other sites More sharing options...
BBQracer Posted March 1, 2017 Author Report Share Posted March 1, 2017 Link to comment Share on other sites More sharing options...
BBQracer Posted March 1, 2017 Author Report Share Posted March 1, 2017 I didn't subtract the speaker volume and I assume any port/slot would reduce internal volume as well. Thanks for the help. Link to comment Share on other sites More sharing options...
ModestDb Posted March 2, 2017 Report Share Posted March 2, 2017 I know this doesn't necessarily answer your question but I ported my subs on .75 cubic feet per sub (after factoring their displacement) so you're not very far off with the space. Hopefully someone else can help you discover more about the port you require with that design. I don't think it's going to be a mile long port though. 4 American Bass VFL 8" at 0.5 ohm Soundstream Tarantula 3000.1D at 0.5 ohm 32 hz ported box designed by Mark at Car Audio Fabrications XS D1200 secondary with Stinger isolator Link to comment Share on other sites More sharing options...
BBQracer Posted March 2, 2017 Author Report Share Posted March 2, 2017 Thanks, I hope it can be done as well. Link to comment Share on other sites More sharing options...
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