REVOofRustler Posted October 21, 2012 Report Share Posted October 21, 2012 Hey guys! I'm gonna be building a box for a buddy of mine and was wondering if I could get some opinions on my design. He isn't sure right now if he wants to go with a 12 or a 15 (It will probably be a Sundown E series or a Skar IVX). I believe he's going to be getting a Rockford Prime 600. It's a 5 channel, and the Subwoofer channel is rated for 300 watts at 2 ohms. It's going in his Pathfinder, so I figured sub up/port back would work well. I had enough time tonight to throw together a box for a 12. I'll probably try to get a design up tomorrow for a 15. Onto the specs/pics! Box for 12 2.2 cubes Tuned to 33 hertz Sub up/Port back Double Baffle So what do you guys think? 2002 Dodge Dakota 4.7 club cab - Sold 2004 Audi S4 Avant - Fi and Crescendo - Stock Bose System - http://www.stevemeadedesigns.com/board/topic/147725-2002-dodge-dakota-end-of-the-road/?hl=%202002%20%20dakota 136.4 Sealed @ 29hz 137.0 Drivers window open @ 26hz Link to comment Share on other sites More sharing options...
Joe X Posted October 21, 2012 Report Share Posted October 21, 2012 If you want to do it like that just place the sub as far from the internal end of the port as you can, also you can do a simpler thing like this: Link to comment Share on other sites More sharing options...
revoracing247 Posted October 21, 2012 Report Share Posted October 21, 2012 maybe change dimensions a little bit so that it's a 3 common wall port with the port on the bottom still? or is there something bad about the port being on the bottom? I think you have a bit of truck stuck in your mud bro ~Ford Ranger, ext cabKenwood DDX4701/0ga stinger wiring for big 31/0ga ofc flextech wiring 3 kinetik 800's AQ2200 @1ohm Sundown Audio X15 in a 27Hz tuned ported box LE BUILD LOG!!! Link to comment Share on other sites More sharing options...
REVOofRustler Posted October 22, 2012 Author Report Share Posted October 22, 2012 If you want to do it like that just place the sub as far from the internal end of the port as you can, also you can do a simpler thing like this: It would be simpler that way, but I just love the looks of having a centered port when it's sub up/port back. Do you think there would be loading issues with how I have the port? And I'm also making sure the sub will not be mounted over the port at all. maybe change dimensions a little bit so that it's a 3 common wall port with the port on the bottom still? or is there something bad about the port being on the bottom? There's nothing bad that I've heard of haha. I did try it with the port going from wall to the other, and for there to be adequate port area it would end up being like a 1" by 20.5" port and I just thought that looked kinda funny. Anyways, I found some time tonight to throw together a design for a 15. I believe at this point that he's leaning towards the Sundown E series. I still don't really know if he wants to go with a 12 or a 15. I did try to place the sub further away from the port on this box. Any opinions/advice? 2002 Dodge Dakota 4.7 club cab - Sold 2004 Audi S4 Avant - Fi and Crescendo - Stock Bose System - http://www.stevemeadedesigns.com/board/topic/147725-2002-dodge-dakota-end-of-the-road/?hl=%202002%20%20dakota 136.4 Sealed @ 29hz 137.0 Drivers window open @ 26hz Link to comment Share on other sites More sharing options...
Joe X Posted October 22, 2012 Report Share Posted October 22, 2012 Well say you go for the Sundown E15, since you are underpowering the sub, you would increase efficiency by not going to the tight side of the net volume range, the other thing is that port area is above what's needed, 38-40 square inches is about right at the 33Hz tuning. Lastly your drawing shows a port that apparently widens after the turn. Link to comment Share on other sites More sharing options...
revoracing247 Posted October 22, 2012 Report Share Posted October 22, 2012 yeah i was gonna ask about that. gets wider after the turns?? and also i know if you stretched it from end to end it'd be like 1" tall but i was just saying adjust your box dim so that it's not so wide so the port could be about the same size I think you have a bit of truck stuck in your mud bro ~Ford Ranger, ext cabKenwood DDX4701/0ga stinger wiring for big 31/0ga ofc flextech wiring 3 kinetik 800's AQ2200 @1ohm Sundown Audio X15 in a 27Hz tuned ported box LE BUILD LOG!!! Link to comment Share on other sites More sharing options...
alaskanzx5 Posted October 22, 2012 Report Share Posted October 22, 2012 If you want to do it like that just place the sub as far from the internal end of the port as you can, also you can do a simpler thing like this: It would be simpler that way, but I just love the looks of having a centered port when it's sub up/port back. Do you think there would be loading issues with how I have the port? And I'm also making sure the sub will not be mounted over the port at all. maybe change dimensions a little bit so that it's a 3 common wall port with the port on the bottom still? or is there something bad about the port being on the bottom? There's nothing bad that I've heard of haha. I did try it with the port going from wall to the other, and for there to be adequate port area it would end up being like a 1" by 20.5" port and I just thought that looked kinda funny. Anyways, I found some time tonight to throw together a design for a 15. I believe at this point that he's leaning towards the Sundown E series. I still don't really know if he wants to go with a 12 or a 15. I did try to place the sub further away from the port on this box. Any opinions/advice? take this picture ^^^ (last pic), turn the box to where the side of the box that is open to see the inside is on top. undo the double baffle and cut out for the sub and move it to the side that is open to see the inside of the box. the box would stay the same with all measurements and it would still be sub up port back but the sub would be on a different side of the box. then you could move the sub all the way to the corner oppisite of the port opening inside the box. t1500bdcp 2 t2d4 15" 1 t600.4 1 t400.2 1 set p1 tweets singer alt, tons of wiring, smd vm-1, 80prs, back seat delete, still in the works, aiming for a 145-147 with the ability to play 25hz up to 50hz. Link to comment Share on other sites More sharing options...
REVOofRustler Posted October 22, 2012 Author Report Share Posted October 22, 2012 If I were to do something like that, Id probabaly just make a new design with 3 common port walls. And as for the port changing sizes, thats the result of a problem in my math and not checking everything over. Haha 2002 Dodge Dakota 4.7 club cab - Sold 2004 Audi S4 Avant - Fi and Crescendo - Stock Bose System - http://www.stevemeadedesigns.com/board/topic/147725-2002-dodge-dakota-end-of-the-road/?hl=%202002%20%20dakota 136.4 Sealed @ 29hz 137.0 Drivers window open @ 26hz Link to comment Share on other sites More sharing options...
revoracing247 Posted October 22, 2012 Report Share Posted October 22, 2012 you know i actually kind of like the 1 common wall port look. if there's no problem with it other then people saying it's more complicated then need be and they'd just do a 3 common wall port for sake of being easier. then i'd do it! I think you have a bit of truck stuck in your mud bro ~Ford Ranger, ext cabKenwood DDX4701/0ga stinger wiring for big 31/0ga ofc flextech wiring 3 kinetik 800's AQ2200 @1ohm Sundown Audio X15 in a 27Hz tuned ported box LE BUILD LOG!!! Link to comment Share on other sites More sharing options...
REVOofRustler Posted October 22, 2012 Author Report Share Posted October 22, 2012 I think it really has more to do with loading. The sub is pretty close to the port opening, and is practically firing into the port. If there's not enough space between the port and the sub then the sub could bottom out really easily. 2002 Dodge Dakota 4.7 club cab - Sold 2004 Audi S4 Avant - Fi and Crescendo - Stock Bose System - http://www.stevemeadedesigns.com/board/topic/147725-2002-dodge-dakota-end-of-the-road/?hl=%202002%20%20dakota 136.4 Sealed @ 29hz 137.0 Drivers window open @ 26hz Link to comment Share on other sites More sharing options...
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