herbykw Posted September 4, 2009 Report Share Posted September 4, 2009 (edited) So many people have told me that a 4th order is the way to go. Never had one. So when attempting to design a 4th order how do you know the sizes to make the enclosure? How many cubes for the sealed section? how to design the port? Here is some of my info Kicker Solo X 18" AQ2200 02 Monte Carlo with about 7 cubes to work with. I dont care if it can or cant be done... asking how do you design?? Might have to design the box to dip into the spare tire area, for a extra few inches of space. Edited September 5, 2009 by herbykw Quote 06 300C 5.7 Hemi K&N CAI JVC KW-AVX640 6.1" DVD DC Audio 3.5k 6 DC Audio 8"s 6 cubes 8" aero port at 32hrtz http://www.stevemeadedesigns.com/board/topic/183798-chrysler-300c-8-build/?p=2731834#entry2731834 Link to comment Share on other sites More sharing options...
aznboi3644 Posted September 6, 2009 Report Share Posted September 6, 2009 Everyone over on ROE has already informed you that the 18 will not work in that small of space for a 4th order. As for the chamber sizes and tuning. That is ALL dependent upon the application. You can go for a low efficiency design with a wide bandwith or a highly efficient design with a very narrow bandwith. Design, build, test Quote Link to comment Share on other sites More sharing options...
Eric B Posted September 6, 2009 Report Share Posted September 6, 2009 (edited) I know you said u dont care if it cant be done, but honestly.. wats the point of doing it when you know it cant be done? 7 cubes for a 4th order for a 18? ummm...no stick to ported Edited September 6, 2009 by Eric B Quote 2007 Chevy HHR LT UNDER CONSTRUCTION 1st Place Loud N Low 2010 MWSPL Finals 3rd Place Xtreme 3 2010 MWSPL Finals Link to comment Share on other sites More sharing options...
aznboi3644 Posted September 6, 2009 Report Share Posted September 6, 2009 not even enough to port Quote Link to comment Share on other sites More sharing options...
Florida heat Posted September 6, 2009 Report Share Posted September 6, 2009 lol what exactley is a 4th order?? Quote 4 sets of JL vr (discontinued) 6.5 components 4 JL wo 15" 2 JL/J2 1000.1 Alpine v power 400x4 Kenwood h/u all in a hyundai Link to comment Share on other sites More sharing options...
01xtreme Posted September 6, 2009 Report Share Posted September 6, 2009 lol what exactley is a 4th order?? It's a bandpass enclosure where the subs are loaded in a sealed chamber that is firing into a ported chamber. Quote My System: Pioneer AVH-P3200BT 4-Dayton 7 inch reference series (front doors) 8-Onkyo 3/4 inch tweeters (dash) 1-Sundown Audio 100.4D (mids/highs) 2-18" BTL's (for now) Crescendo 3kwp (for sale) Complete rebuild coming soon... Link to comment Share on other sites More sharing options...
Florida heat Posted September 6, 2009 Report Share Posted September 6, 2009 It's a bandpass enclosure where the subs are loaded in a sealed chamber that is firing into a ported chamber. oh wow. who woulda thought. any diagrams i could see of one just tot get a better idea? Quote 4 sets of JL vr (discontinued) 6.5 components 4 JL wo 15" 2 JL/J2 1000.1 Alpine v power 400x4 Kenwood h/u all in a hyundai Link to comment Share on other sites More sharing options...
01xtreme Posted September 6, 2009 Report Share Posted September 6, 2009 Quote My System: Pioneer AVH-P3200BT 4-Dayton 7 inch reference series (front doors) 8-Onkyo 3/4 inch tweeters (dash) 1-Sundown Audio 100.4D (mids/highs) 2-18" BTL's (for now) Crescendo 3kwp (for sale) Complete rebuild coming soon... Link to comment Share on other sites More sharing options...
andym85 Posted September 6, 2009 Report Share Posted September 6, 2009 oh wow. who woulda thought. any diagrams i could see of one just tot get a better idea? http://www.diysubwoofers.org/bnd/4thorder.htm Quote i likes me some audio stuff... Link to comment Share on other sites More sharing options...
CLNFREAK Posted September 6, 2009 Report Share Posted September 6, 2009 (edited) Here is my box its about 1.25 sealed and 1.75 x2 ported tuned to about 40-43 hz (i kno I need new subs helped out a cuz with money to get these, hit pretty good ) I love the box I have no trunk rattle at all, I also put about 300 sq ft of sound deadener from the trunk to the fire wall it fires thru the rear seat arm rest so seat can stay up Edited September 6, 2009 by CLNFREAK Quote Link to comment Share on other sites More sharing options...
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