dylan117 Posted November 10, 2015 Report Share Posted November 10, 2015 hi everyone, im designing a box for my 2000 blazer (4 door) for 2 fi sp4 18s behind the back seats. ive got the box as big as i can get it while still having some back window left. its come down to this, either put them in 10.8 cubes (after displacements) and have the entire box double layered, OR, have them in 12+ cubes but have the box single layered with only a double baffle. which would be better, the double layered box thats below the recommended volume, or the single layered box with just the double baffle thats at the rated air volume if not more. what would be best for daily beatin' on rated power. thanks guys! Link to comment Share on other sites More sharing options...
Massivespl Posted November 10, 2015 Report Share Posted November 10, 2015 http://www.caraudioclassifieds.org/forum/dc/96286-2x-18-xl-box.html Can u see this thread over on Caco? My buddy built a box for 2 18s and it did 150db+ on music on a 3.5k amp. c-pillar flat wall 157.11db on music 2 crossfire 8k 4 NSV3 18s 4 crescendo 10s 4 Rockford pro 6.5s Quad excessive amperage 350alts 4 juicebox 3100s Link to comment Share on other sites More sharing options...
dylan117 Posted November 10, 2015 Author Report Share Posted November 10, 2015 http://www.caraudioclassifieds.org/forum/dc/96286-2x-18-xl-box.html Can u see this thread over on Caco? My buddy built a box for 2 18s and it did 150db+ on music on a 3.5k amp. yes i just read it, so you would think 10.8 cubes tuned at 33hz with 244 sq inches of port would be good? Link to comment Share on other sites More sharing options...
Miguels Posted November 10, 2015 Report Share Posted November 10, 2015 no it wont work to its potential.. you need 12 cubic feet at least.. the xl does not compare to Fi audio.. DC subs are made for smaller boxes.. Fi subs are made for normal sized boxed my logshttp://www.stevemead...-my-new-set-up/my blow through loghttp://www.stevemead...future-updates/ 96 ss http://www.stevemeadedesigns.com/board/topic/164094-96-impala-ss-build/ Link to comment Share on other sites More sharing options...
Miguels Posted November 10, 2015 Report Share Posted November 10, 2015 http://www.caraudioclassifieds.org/forum/dc/96286-2x-18-xl-box.html Can u see this thread over on Caco? My buddy built a box for 2 18s and it did 150db+ on music on a 3.5k amp. dont know how much you have experience but that wont work with the Fi subs.. 2 way different types of subs that work way differently my logshttp://www.stevemead...-my-new-set-up/my blow through loghttp://www.stevemead...future-updates/ 96 ss http://www.stevemeadedesigns.com/board/topic/164094-96-impala-ss-build/ Link to comment Share on other sites More sharing options...
dylan117 Posted November 10, 2015 Author Report Share Posted November 10, 2015 no it wont work to its potential.. you need 12 cubic feet at least.. the xl does not compare to Fi audio.. DC subs are made for smaller boxes.. Fi subs are made for normal sized boxed so you think it would be better to single layer with some bracing to give it 12+ cubes as of compared to double layering? Link to comment Share on other sites More sharing options...
Miguels Posted November 10, 2015 Report Share Posted November 10, 2015 it would be better off getting 15's with that size box.. i know thats not what you want to hear but thats the way it is my logshttp://www.stevemead...-my-new-set-up/my blow through loghttp://www.stevemead...future-updates/ 96 ss http://www.stevemeadedesigns.com/board/topic/164094-96-impala-ss-build/ Link to comment Share on other sites More sharing options...
Miguels Posted November 10, 2015 Report Share Posted November 10, 2015 what amp are you going to use for them? my logshttp://www.stevemead...-my-new-set-up/my blow through loghttp://www.stevemead...future-updates/ 96 ss http://www.stevemeadedesigns.com/board/topic/164094-96-impala-ss-build/ Link to comment Share on other sites More sharing options...
dylan117 Posted November 10, 2015 Author Report Share Posted November 10, 2015 it would be better off getting 15's with that size box.. i know thats not what you want to hear but thats the way it is if you had to make a choice, would you double layer with less airspace, or single layer with bracing and have more airspace? Link to comment Share on other sites More sharing options...
dylan117 Posted November 10, 2015 Author Report Share Posted November 10, 2015 what amp are you going to use for them? soon it will be a crecendo BC5500 @.7 ohms Link to comment Share on other sites More sharing options...
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