ben29555 Posted July 1, 2009 Report Share Posted July 1, 2009 how many square inches of port should i have per cube My Build Log loud bass songs Link to comment Share on other sites More sharing options...
EricM9104 Posted July 1, 2009 Report Share Posted July 1, 2009 12-16^2" every 1^3' is the general rule. 2015 Honda Civic LX 4dr | 24k miles Stock H/U and mids/highs Power Acoustik GW3-12" D2 Sub HiFonics BXX1200.1D @ 1ohm Random 2.5^3' dual ported box NVX LOC Stinger wiring throughout 1977 Chevy SWB Cammed 350 Dual exhaust Cheap Wish stereo Link to comment Share on other sites More sharing options...
wL<3bass Posted July 1, 2009 Report Share Posted July 1, 2009 ^^Thats generally the rule but some subs for example DD 9500 like 20sqin per cube or so they say. Vehicle: 1997 S10 Blazer 4dr 4X4 Exterior: Rear End Bagged, Black Grill, Lifted 2" Amplifiers: Rockford Fosgate T8004 & T10001bd Batteries: 2 Stinger SPV35, Kinetik HC2400 Electrical: Big 3, DC Power 290amp Alternator w/ MLA at 15.5v Enclosure: 4.2 ft³ @ 33Hz 84sq.in. of port (20sq.in. per cube) Headunit: Eclipse CD3200 w/ 80G iPod Mids/Highs: Rockford T152s (a-pillars), Rockford T162s (doors) Subwoofers: 1 15" Fi BL Fully Loaded Wire: All 1/0g Kicker Hyperflex My YouTube Videos My Fiberglass A-Pillar Build My "Seamless" Looking Box Build My DD1508 T-Line Bandpass Build "Seamless" w/ Acrylic Windows (for '05 TrailBlazer) My Stealth 8" Fiberglass Build (for '05 TrailBlazer) My Build For A Friend's '08 Cobalt 15" BL Sealed Off From The Trunk My feedback/references... Link to comment Share on other sites More sharing options...
bkolfo4 Posted July 1, 2009 Report Share Posted July 1, 2009 Port area is based on air velocity, which is calculated on the volume of air the driver can sweep (or will sweep if you do not plan to drive it to the extreme). The idea of port area based on per cubic ft of enclosure is not the best way. It is generic, because most 10's, 12's, 15's, 18's, etc. will have close to the same airspace requirements. . .It is a recommendation that works for those who do not want to figure out what they really need. As I have said many times here before, a 15" driver with 10mm of excursion on 100 watts does not require as much port area as a BTL on 4000 watts, even if they are in the same box. . . Brian Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
shainemcconnell Posted July 1, 2009 Report Share Posted July 1, 2009 ^times three unles aero(round) port then 8-12 sqin 2010 IDBL Rookie 1 North American Champion 2009 IDBL Rookie 1 Fl State Champion 2009 EBB Fly Weight 3rd Place Fl State Finals 2006 Silver Grand Prix GXP :Diablo Audio Hellfire 1000.1, JL Audio 300/4, One 13W7, ZR650, VR690, JL Cleansweep setup. Team Pure Pressure Link to comment Share on other sites More sharing options...
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