caraudiolove Posted December 28, 2012 Report Posted December 28, 2012 i was wondering how much port area 2 sa 12's should have to be able to play the lows like 28hrz or something low like that. this is what i have so far for the dieminsions tell what to change on that would help like tuning, port area, port area per foot, thanks Sealed 16-D 27"-W 15"-H their will be a divider or what ever will be better Ported 15-H 30"-W 13.25-D don't know on the port yet.
n8ball2013 Posted December 28, 2012 Report Posted December 28, 2012 Might want to give it more than thirty minutes when you're asking for someone to to pretty much design you a fourth order THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger.
DustinBolt Posted December 28, 2012 Report Posted December 28, 2012 thats only going to be like a 1 to 1 ratio ported to sealed usually you are better of with a 2 to 1 or more! 1997 BMW 528i Fi ssd 12 6th order box Build Log- http://www.stevemeadedesigns.com/board/topic/144835-rebuild-in-the-bmw-6th-order-time-update-1113/
tacomaguy1 Posted December 28, 2012 Report Posted December 28, 2012 I've heard 50% of cone area is a good place to start...so around 113" Team Flex Issues
caraudiolove Posted December 28, 2012 Author Report Posted December 28, 2012 how thick is a aero port?
tacomaguy1 Posted December 28, 2012 Report Posted December 28, 2012 how thick is the actual plastic on them?....the psp ones are like 1/16-1/8 Team Flex Issues
caraudiolove Posted December 29, 2012 Author Report Posted December 29, 2012 made a better 4th order design with a 2:1 ratio 5.09 cubic feet for the ported part 2.65 cubic feet for the sealed port area per foot-71.75 port area-14.29 would this work better?
DustinBolt Posted December 29, 2012 Report Posted December 29, 2012 those numbers look good. 1997 BMW 528i Fi ssd 12 6th order box Build Log- http://www.stevemeadedesigns.com/board/topic/144835-rebuild-in-the-bmw-6th-order-time-update-1113/
Nightshade Posted December 30, 2012 Report Posted December 30, 2012 If it were me I would go with 1.75-2 cubes in the sealed portion and 3.5-4.5 cubes in the ported side. Those woofers really like the sealed side of the fourth order to be small. For port area I would start at 120" and go down from there. The length I'm not sure of off the top of my head, but I feel the numbers you posted are a bit large for sa12's. 2013 VW Jetta GLI 2.0 Turbo 1 Sundown Audio SCV2000 1 Sundown Audio X15 V2 1 XS Power D3100 Audio Control LC6i Stock Deck 146.4 sealed on the dash at 37hz 2001 Focus ZX3: RETIRED Team Sundown Audio, Team XS Power, 2 time NSPL Car 3601-Up Champion, 2 time NSPL Car Hardcore ChampionHighest NSPL Scores to date:154.3db on the dash sealed at 46hz, 156.2db in the kick at 46hz155.2db unofficial on dash at 43hz
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