spldreams Posted July 19, 2011 Report Share Posted July 19, 2011 im designing a box for a dc level 4 15 using torres calculator. the net volume right now is 3.72 after sub and port displacement. im using 2 4 inch aero ports. the port area is only 6.75 per cube but that will increase after bracing is added. I need help figuring out what bracing to do for this box and how to calculate its displacement. i want to 45 the corners but im not sure how to calculate that displacement. Quote Link to comment Share on other sites More sharing options...
rickyfromthe407 Posted July 19, 2011 Report Share Posted July 19, 2011 Do you have a picture of the box design? Would help us a bit more. But bracing can never have TOO much. If you say volume after displacement is 3.72 what are you trying to get it down to after bracing? Oh yeah, and I read 45ing the corners isnt always the smartest idea. Especially doing all of them. Not exactly sure why, but I am sure someone will chime in on that one. Quote Current 4 10"s System! 1/0 Power Wire All Around + Big 3 - $140 Rockford Fosgate T2500-1BD - MSRP $1800 (4) Memphis M3 10" Subwoofers 1600watts $300ea. = $1200 XS D6500 $245.65 PIONEER AVH-P5200DVD 7" Head Unit = $430 Soundstream SC-6T Component 6.5" FRONT $60 Pioneer TS-A1673R 6.5" REAR $85 A Bangin system! = PRICELESS! Link to comment Share on other sites More sharing options...
fecupe2001 Posted July 19, 2011 Report Share Posted July 19, 2011 1: Port is too small 2: You can use 2x4´s , all threaded rod, dowels, etc etc Quote I´m the SPL Gains topic creator!! wanna get louder?? check this: SPL Gains. Panamenian 2009 & 2010 & 2014 Bass Race 149.9 Champion! 2 15" subs and a 2K wired at 1 ohm, http://www.stevemeadedesigns.com/board/topic/167788-fecupe2001-2-15s-on-a-2k-video-on-page-3/ 8 Massive 15" subs and small power, http://www.stevemeadedesigns.com/board/topic/179296-fecupe2001s-8-15s-4th-order-bandpass-wall/ Link to comment Share on other sites More sharing options...
Supercharged DCs Posted July 19, 2011 Report Share Posted July 19, 2011 I'd use a 6" aero at the least.... Maybe even two. Quote Bassless once again. Can't seem to keep a system for more than a few weeks Saving for a '06 Nissan 350z, look for build around June 2012. Link to comment Share on other sites More sharing options...
baaudio Posted July 19, 2011 Report Share Posted July 19, 2011 I just built a box for my level 4 15 at 3.4 cubes with ~54 sq in port Quote Team NWSPL baaudio Build Log 2001 GMC Sierra walkthrough 4 Mechman Elite 370s, 10 AGM batteries, 3 Crossfire XS v2 18s, Crossfire 8k Link to comment Share on other sites More sharing options...
Craig28 Posted July 19, 2011 Report Share Posted July 19, 2011 yeah depending on the situation 45s can lower your score. you can also use cut pvc pipe to do it. haha check fecupe's SPL gains thread. Quote TEAM DC Everything is a 150 on th earometer Well I guess punching a woman is a good way to test your strength! You never know how strong you are until you cold-cock a woman in the head and break that bitches jaw. Next time she tries to punch you in the stomach, whip your wiener out and chase her around. Show her who's boss. AlphaDamp CLD Mat - Get more sound deadening using less sound deadener Link to comment Share on other sites More sharing options...
spldreams Posted July 19, 2011 Author Report Share Posted July 19, 2011 with one 6 inch aero i can get the port area to 8.5 per cubic foot. torres calculator recommends 9-13 so im still a little below where i should be. with 2 6 inch ports the length would be to long to get the tuning i want. this is my first box design so i expect it to come out pretty bad lol. for bracing ill probably end up using some threaded rod. hopefully it comes out sounding decent at least. Quote Link to comment Share on other sites More sharing options...
Supercharged DCs Posted July 19, 2011 Report Share Posted July 19, 2011 8-12sqin per cube is normally recommended when using aeroports. A single 6" should work nicely, and provide you with more port than the 2 4" aeros. Quote Bassless once again. Can't seem to keep a system for more than a few weeks Saving for a '06 Nissan 350z, look for build around June 2012. Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted July 19, 2011 Report Share Posted July 19, 2011 (edited) 3.35 cubes, 3 4in diameter 23in aeros (33hz). You dont need bracing with .75 MDF with that sub. I have used the level 4 15s in a few different enclosures. They are ok at 30Hz, seemed to thoroughly enjoy ~35hz tuning, and acted well at 40hz. 10-12sqin of port (aeros). box i used dims(28x17.5x18.5 our of .75MDF) Edited July 19, 2011 by ChevyBoy95 Quote Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
RAM_Designs Posted July 19, 2011 Report Share Posted July 19, 2011 No way you can do a pair of 6" aeros...the length would be ridiculous. Quote Ryan Miskin - owner of RAM Designs I have my PM's turned off, please email at <script data-cfhash='f9e31' type="text/javascript"> /* */</script> 2200+ designs since March 2011... Link to comment Share on other sites More sharing options...
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