bsneon98 Posted January 22, 2013 Report Share Posted January 22, 2013 Hey guys I'm starting to think that I'm tired of this prefab box I got when I bought my subs. I've built smaller boxes before but none that actually involved any tuning or any real calculating. The space I have to work with is roughly 14 inches high 18+ inches deep (can go up to 24) 30 inches wide Its for 2 American Bass XD 10's (see build log for current setup) The box will first be tested firing the trunk lid, then flipped around to see if that sounds better. I really want those lows Any help is appreciated as this is my first real box build. Thanks in advance! Build Log: http://www.stevemeadedesigns.com/board/topic/152954-1998-plymouth-neon-updates/ Link to comment Share on other sites More sharing options...
Kidd_Bass Posted January 22, 2013 Report Share Posted January 22, 2013 Tores Box Calculator!!!! it's Perfect and you can play with the dimensions to get the perfect freq your lookin for Link to comment Share on other sites More sharing options...
bsneon98 Posted January 22, 2013 Author Report Share Posted January 22, 2013 Tores Box Calculator!!!! it's Perfect and you can play with the dimensions to get the perfect freq your lookin for I've been playing with it a little bit now, and with those measurements I can get a tuning frequency of 24hz... lulz. Does that seem accurate? Build Log: http://www.stevemeadedesigns.com/board/topic/152954-1998-plymouth-neon-updates/ Link to comment Share on other sites More sharing options...
juan-lightning Posted January 22, 2013 Report Share Posted January 22, 2013 Something is wrong, port area per foot is too small. IDK if that calc is the same as the old one but if you plug anything into the round port it cancels out the other one. A single 3" port isn't enough for 2 10's. Here's something I came up with, note I'm not a pro at this just trying to help out. '02 SVT Lightning Pioneer 3200dvd C&D 80ah under hood, 2 shuriken bt20's in cab PPI BlackIce 800.4, Rockford T1 6.5comps, kicker KS 5.25comps(Running both active) AQ 2200d, 2 Skar VVX-10s, 2.5@34hz, Epicenter Link to comment Share on other sites More sharing options...
bsneon98 Posted January 22, 2013 Author Report Share Posted January 22, 2013 Something is wrong, port area per foot is too small. IDK if that calc is the same as the old one but if you plug anything into the round port it cancels out the other one. A single 3" port isn't enough for 2 10's. Here's something I came up with, note I'm not a pro at this just trying to help out. Thanks man, I see what I did there with the ports... stupid mistake lol. I don't think that there's any differences but a few questions. How is the port length 37 when the box is only 20 deep, and how did you calculate the woofer displacement? Build Log: http://www.stevemeadedesigns.com/board/topic/152954-1998-plymouth-neon-updates/ Link to comment Share on other sites More sharing options...
Rev. Wrath Posted January 22, 2013 Report Share Posted January 22, 2013 Also in woofer displacement you have 2. The calc thinks you mean 2 cu ft. Displacement of each sub is probably somewhere between .1 and .15. I'm not 100% on what it actually is. Link to comment Share on other sites More sharing options...
Joe X Posted January 23, 2013 Report Share Posted January 23, 2013 Here is another suggestion: Enclosure Specifications: Fb = 32 Hz Vb = 2.4 ft^3 External Height = 14 in External Width = 28.5 in External Depth = 18 in Port Width = 2 3/8 in Cut Sheet List: * All Dimensions in Inches. * Wood Thickness is 3/4 for all Parts. External Enclosure Parts: 2x Front = 13 1/16 x 12 1/2 Back = 28 1/2 x 12 1/2 Left & Right Sides: 16 1/2 x 12 1/2 Top & Bottom = 28 1/2 x 18 Shared Port Internal Assembly Parts: 2 x Front to Back = 15 5/16 x 12 1/2 2 x Extension = 8 3/16 x 12 1/2 Assembly guide (generic dimensions): Link to comment Share on other sites More sharing options...
juan-lightning Posted January 23, 2013 Report Share Posted January 23, 2013 Something is wrong, port area per foot is too small. IDK if that calc is the same as the old one but if you plug anything into the round port it cancels out the other one. A single 3" port isn't enough for 2 10's. Here's something I came up with, note I'm not a pro at this just trying to help out. Thanks man, I see what I did there with the ports... stupid mistake lol. I don't think that there's any differences but a few questions. How is the port length 37 when the box is only 20 deep, and how did you calculate the woofer displacement? You would have to make an L shape port, and you measure down the middle like this. 17.75"+19.25"=37" For woofer displacement I guesstimated, like mentioned earlier is usually around .1-.15 per 10" '02 SVT Lightning Pioneer 3200dvd C&D 80ah under hood, 2 shuriken bt20's in cab PPI BlackIce 800.4, Rockford T1 6.5comps, kicker KS 5.25comps(Running both active) AQ 2200d, 2 Skar VVX-10s, 2.5@34hz, Epicenter Link to comment Share on other sites More sharing options...
bsneon98 Posted January 23, 2013 Author Report Share Posted January 23, 2013 wow guys thanks for all the responses! Here is another suggestion: Enclosure Specifications: Fb = 32 Hz Vb = 2.4 ft^3 External Height = 14 in External Width = 28.5 in External Depth = 18 in Port Width = 2 3/8 in Cut Sheet List: * All Dimensions in Inches. * Wood Thickness is 3/4 for all Parts. External Enclosure Parts: 2x Front = 13 1/16 x 12 1/2 Back = 28 1/2 x 12 1/2 Left & Right Sides: 16 1/2 x 12 1/2 Top & Bottom = 28 1/2 x 18 Shared Port Internal Assembly Parts: 2 x Front to Back = 15 5/16 x 12 1/2 2 x Extension = 8 3/16 x 12 1/2 Assembly guide (generic dimensions): This design is gorgeous! Last time I had my subs out of my current box, I noticed that each woofer has its own chamber. Any reasons behind that and if so what are the differences? Something is wrong, port area per foot is too small. IDK if that calc is the same as the old one but if you plug anything into the round port it cancels out the other one. A single 3" port isn't enough for 2 10's. Here's something I came up with, note I'm not a pro at this just trying to help out. Thanks man, I see what I did there with the ports... stupid mistake lol. I don't think that there's any differences but a few questions. How is the port length 37 when the box is only 20 deep, and how did you calculate the woofer displacement? You would have to make an L shape port, and you measure down the middle like this. 17.75"+19.25"=37" For woofer displacement I guesstimated, like mentioned earlier is usually around .1-.15 per 10" Ok, thank you! Makes perfect sense now Build Log: http://www.stevemeadedesigns.com/board/topic/152954-1998-plymouth-neon-updates/ Link to comment Share on other sites More sharing options...
Joe X Posted January 23, 2013 Report Share Posted January 23, 2013 Last time I had my subs out of my current box, I noticed that each woofer has its own chamber. Any reasons behind that and if so what are the differences? There are a few reasons to use this design: a) it is self bracing b ) since is symmetrical both subs loading is the same c) in the case an L port is obstructed by lateral car bracing the port in the middle can help. Just another option for you to keep in mind. Link to comment Share on other sites More sharing options...
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