Will Rouse Posted December 4, 2012 Report Share Posted December 4, 2012 I've never built a 4th order (sealed and ported) bandpass ,lot of sealed and ported, but both in one i have an astro cargo van so plenty of room to build (50 in between wheel wells) . I have 4 sa-12's with 2 rf t1500bd's could really use some help on design would love to do around 32Hz maybe a little higher i keep running into port area problems when i try. I would really appreciate the help how i sound wit my windows down Link to comment Share on other sites More sharing options...
321slapinbass Posted December 4, 2012 Report Share Posted December 4, 2012 haha 32hz for a 4th order. try 45hz, and do some reasearch first. i would do 5 ft^3 sealed and 10 ft^3 ported to 45 - 48hz with 16 in^2 of port per cube. just a simple 2:1 ratio. 2000 Dodge Durango Subs - (2) SKAR VVX 15 D2's Box - 7.2 ft^3 @ 33hz, 120 in of port Sub amp - Digital Designs M2 @ .5 ohm Mids + Highs - PRV Audio Mids + Highs amp - Hifonics 2000.4 Headunit - Alpine CDE-100 Equalizer - Clarion EQS746 Batteries - Mopar group 27 + (2) C&D 52ah Wiring - 1/0 BIG 3, (2) runs 1/0 Alternator - Singer 250A 147.79 dB @ 35hz - burp - sealed on dash 147.47 dB @ 35hz - music - sealed on dash YOUTUBE: http://www.youtube.com/user/321slapinBass/videos Link to comment Share on other sites More sharing options...
dirtysouth32 Posted December 4, 2012 Report Share Posted December 4, 2012 hit up robin butler on facebook...or google bassheads ent Link to comment Share on other sites More sharing options...
Neckbeard Posted December 4, 2012 Report Share Posted December 4, 2012 You want the ported part to be tuned quite high, like 321 said Build log, Super slow!!: http://www.stevemeadedesigns.com/board/topic/168096-slow-neckbeards-1970-opel-gt/ Link to comment Share on other sites More sharing options...
321slapinbass Posted December 4, 2012 Report Share Posted December 4, 2012 in a 4th order, the ported section should be tuned to the peak fs of the sealed section for best results... at least thats what i have been told. 2000 Dodge Durango Subs - (2) SKAR VVX 15 D2's Box - 7.2 ft^3 @ 33hz, 120 in of port Sub amp - Digital Designs M2 @ .5 ohm Mids + Highs - PRV Audio Mids + Highs amp - Hifonics 2000.4 Headunit - Alpine CDE-100 Equalizer - Clarion EQS746 Batteries - Mopar group 27 + (2) C&D 52ah Wiring - 1/0 BIG 3, (2) runs 1/0 Alternator - Singer 250A 147.79 dB @ 35hz - burp - sealed on dash 147.47 dB @ 35hz - music - sealed on dash YOUTUBE: http://www.youtube.com/user/321slapinBass/videos Link to comment Share on other sites More sharing options...
Will Rouse Posted December 4, 2012 Author Report Share Posted December 4, 2012 did the winisd thing it said 1.6/sub sealed and 3.1/sub ported at 49.5Hz tuning so i am on torres workin how i sound wit my windows down Link to comment Share on other sites More sharing options...
john253a Posted December 4, 2012 Report Share Posted December 4, 2012 why not try 3.5@45 and 9@25 and do a 6th order 7net@26hz would be my preferance through Link to comment Share on other sites More sharing options...
Will Rouse Posted December 4, 2012 Author Report Share Posted December 4, 2012 why not try 3.5@45 and 9@25 and do a 6th order 7net@26hz would be my preferance through per sub wow wouldn't that lead to mec fail at high wattages how i sound wit my windows down Link to comment Share on other sites More sharing options...
321slapinbass Posted December 4, 2012 Report Share Posted December 4, 2012 why not try 3.5@45 and 9@25 and do a 6th order 7net@26hz would be my preferance through i would not tell this guy to do a 6th. they are very big and very hard to get right 2000 Dodge Durango Subs - (2) SKAR VVX 15 D2's Box - 7.2 ft^3 @ 33hz, 120 in of port Sub amp - Digital Designs M2 @ .5 ohm Mids + Highs - PRV Audio Mids + Highs amp - Hifonics 2000.4 Headunit - Alpine CDE-100 Equalizer - Clarion EQS746 Batteries - Mopar group 27 + (2) C&D 52ah Wiring - 1/0 BIG 3, (2) runs 1/0 Alternator - Singer 250A 147.79 dB @ 35hz - burp - sealed on dash 147.47 dB @ 35hz - music - sealed on dash YOUTUBE: http://www.youtube.com/user/321slapinBass/videos Link to comment Share on other sites More sharing options...
Will Rouse Posted December 5, 2012 Author Report Share Posted December 5, 2012 how i sound wit my windows down Link to comment Share on other sites More sharing options...
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