Polarbear Posted December 28, 2012 Report Share Posted December 28, 2012 has the same rms output..? 02 impala VM-1 2 dc 12 xl's RF t2500bdcp Second skin damp pro Kenwood head unit 240 mechman alt d3400 in the front d3100 in the rear 50ft Rockford fosgate ofc 1/0 Link to comment Share on other sites More sharing options...
flwatersaver Posted December 28, 2012 Report Share Posted December 28, 2012 depends on what you want out of your system, My selling FeedbackBuild log - Blazer C pillar wall, Two DC Audio 3.5k'sTEAM PSI Link to comment Share on other sites More sharing options...
Max1636 Posted December 28, 2012 Report Share Posted December 28, 2012 Fi BTL N3's are designed for SPL use. SP4's are a daily driver. Note also don't compare subs only by their RMS rating, there's much more to them than that. (Old Car) 1995 Volkswagon Golf MK3 2.0L: Fi SP4 18 On A DC Audio 3.5K In A PWK Box Hertz DSK 6" Speakers, Clarion HU 3x Fullriver 120aH AGM's, 225A Alt 2012 Subaru BRZ: Audison Prima APK 163 Bit One, Rockford Amps, Audison Sub Link to comment Share on other sites More sharing options...
CortezDTV Posted December 28, 2012 Report Share Posted December 28, 2012 ^^that 2 completely different applications SCSB Santa Cruz Speaker Box Build logs: Daily Driver Lemon Marquis 2 american bass 750.1s 350.4 on 14 focal 6.5s sq 945 on 4 hertz tweeters Mystery subs http://www.stevemead...__fromsearch__1 The Mustang 'dubbed' Shirley the project from bullet holes to badass http://www.stevemead...cond-skin-time/ Link to comment Share on other sites More sharing options...
Omega5002 Posted December 28, 2012 Report Share Posted December 28, 2012 SP4's are also cheaper 2003 Kia Sorento Team Subsonic LowsTeam Bassin' on a Budget2016 Rebuild Under Construction Best score: 150.2 at 40hz (3k, 2 Custom HDC3 15's) Usaci style(door open, in the kick) Link to comment Share on other sites More sharing options...
Real96SS Posted December 28, 2012 Report Share Posted December 28, 2012 What are you needing either for? If you look at more than the rms rating you will kinda see that they are made for different situations. First thing that pops out is the FS on both subs. One is super low and the other is super high. Check it Vehicle 2007 Chevrolet Avalanche(Co-Co) DNX9980HD 6 Team Fi 15's(King Edition) 3 DC 9k's 8 Nendo PWX 8's 4 Custom Steg 4" Super Tweeters 1 DC Audio 175.4 1 DC Audio 90.4 Rockford 360.3 3 DC Power 370xp Alts(Externally regulated) 21 D1600's 2 D4800's All SMD RCA's AudioTechnix Deadner Viper Alarm My YouTube- http://www.youtube.c...NG?feature=mhee Link to buildlog- http://www.stevemead...4-15s-2-dc-9ks/ Link to UBL- http://www.stevemeadedesigns.com/board/topic/165059-ublkings-avalanchecoco-new-build-starting8-king-edition-15-team-fis-in-a-wallyes-a-wall/ Link to comment Share on other sites More sharing options...
flwatersaver Posted December 28, 2012 Report Share Posted December 28, 2012 4 SP$ 18's in a BHE 4th order on 14k My selling FeedbackBuild log - Blazer C pillar wall, Two DC Audio 3.5k'sTEAM PSI Link to comment Share on other sites More sharing options...
flwatersaver Posted December 28, 2012 Report Share Posted December 28, 2012 SP4's playing super low. My selling FeedbackBuild log - Blazer C pillar wall, Two DC Audio 3.5k'sTEAM PSI Link to comment Share on other sites More sharing options...
Polarbear Posted December 28, 2012 Author Report Share Posted December 28, 2012 yeah i know ones like 28 the other is 54.. and the xmax is different too. 02 impala VM-1 2 dc 12 xl's RF t2500bdcp Second skin damp pro Kenwood head unit 240 mechman alt d3400 in the front d3100 in the rear 50ft Rockford fosgate ofc 1/0 Link to comment Share on other sites More sharing options...
Polarbear Posted December 28, 2012 Author Report Share Posted December 28, 2012 the sp4 weigh more too.. 02 impala VM-1 2 dc 12 xl's RF t2500bdcp Second skin damp pro Kenwood head unit 240 mechman alt d3400 in the front d3100 in the rear 50ft Rockford fosgate ofc 1/0 Link to comment Share on other sites More sharing options...
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