Yannick Pons Posted October 22, 2015 Report Share Posted October 22, 2015 Heya all, First I'd like to introduce myself, Yannick, from France, 20yo Now, I would like some help for my wall design, how many cubes would you use to put 2 FI SP4 18" ? Would like to tune @24Hz. Car would be a VW Golf III, will have 5 PC4000 batteries, 1 x 372A Mechman Alt and 1 DC 9.0k amp. I forgot to say I haven't enough space for a 4th order So I stay on normal wall. BladeIce (official FI seller in Europe) told me about 13cuft Net, seems a little small in my opinion, and you ? Thanks Link to comment Share on other sites More sharing options...
dangaranga Posted October 22, 2015 Report Share Posted October 22, 2015 13 cubes sounds about right depending on power. Are you sure you want to tune so low? Brandon 2000 Furd Ranger supercab 4x4 System: welding wire throughout the truck USalts 390amp Hairpin Juicebox in stock location 8 Banks of maxwell supercaps 2 American Bass Vfl 1100.1 wired to .35 each 2 Fi Audio Sp4 18's ( the DD sc 9918's smoked) Pioneer radio with Soundstream PA mids Powered by a nice sized soundstream 2 channel It's pronounced (dain-ja rain-ja) 2001 2 door focus 1 DD9918 SC Link to comment Share on other sites More sharing options...
Keith77 Posted October 22, 2015 Report Share Posted October 22, 2015 I would tune higher maybe at min 28hz.. Those things will dig low Edit: 13cf sounds about right. Me personally would probably go a hair smaller 12cf Thats cool. Im way too old to be upset by shit like that. Your name is winston. Your own parents hated you even before you were born. My penis is bigger than your penis I'm far from loud and my roof/headliner flaps around like Adam's ass on a windy day. I think it depends more on the structure of the vehicle. Link to comment Share on other sites More sharing options...
Massivespl Posted October 22, 2015 Report Share Posted October 22, 2015 I like big boxes. I'd do like 15cubes with 160" of port tuned to 28-30hz c-pillar flat wall 157.11db on music 2 crossfire 8k 4 NSV3 18s 4 crescendo 10s 4 Rockford pro 6.5s Quad excessive amperage 350alts 4 juicebox 3100s Link to comment Share on other sites More sharing options...
Smoove Posted October 22, 2015 Report Share Posted October 22, 2015 I like Keith77's response. 12cu 28-30hz 2 Team Fi 15's v1 2 DD M5's 970amps of Alt 6th order blowthroughThe truck Blowthrough build : http://www.stevemeadedesigns.com/board/topic/155555-smooves-1996-chevy-ext-cab-c1500-slow-build/The 350z build : http://www.stevemeadedesigns.com/board/topic/170694-smooves-2003-nissan-350z/ My FB page https://www.facebook.com/pages/Smooves-Car-Audio-and-performance/719746144805343 Team Fi Audio http://www.ficaraudio.com/ Link to comment Share on other sites More sharing options...
dangaranga Posted October 22, 2015 Report Share Posted October 22, 2015 a buddy has 2 sp4 18's on 12k in a 14 cube wall tuned to 30hz. gets down like a mofo Brandon 2000 Furd Ranger supercab 4x4 System: welding wire throughout the truck USalts 390amp Hairpin Juicebox in stock location 8 Banks of maxwell supercaps 2 American Bass Vfl 1100.1 wired to .35 each 2 Fi Audio Sp4 18's ( the DD sc 9918's smoked) Pioneer radio with Soundstream PA mids Powered by a nice sized soundstream 2 channel It's pronounced (dain-ja rain-ja) 2001 2 door focus 1 DD9918 SC Link to comment Share on other sites More sharing options...
Yannick Pons Posted October 23, 2015 Author Report Share Posted October 23, 2015 13 cubes sounds about right depending on power. Are you sure you want to tune so low? Sure I want to tune so low lol, need to get low as possible, I don't like to play @more than 28-29hz, want to see how low these woofers can go ^^ If it's tuned too low I'll cut the port to go highter ^^ Thanks for the advices all ! Will make a build log when I'll begin to work in the car Link to comment Share on other sites More sharing options...
khinds94 Posted October 23, 2015 Report Share Posted October 23, 2015 13 cubes sounds about right depending on power. Are you sure you want to tune so low? Sure I want to tune so low lol, need to get low as possible, I don't like to play @more than 28-29hz, want to see how low these woofers can go ^^ If it's tuned too low I'll cut the port to go highter ^^ Thanks for the advices all ! Will make a build log when I'll begin to work in the car I think the same way as you.... Curious how it will sound. Do a build log 03 Sable LS AA mayhem 12" D2 Sundown ZV4 12" D1 Tantric HD 12" D2 Tantric SHD 12" D1 Sundown X12 V2 D2 2.5 cu net Sundown 2000d @ 1 ohm XS Power XP2000 Sky High Sound Deadener Sky High wire Stock alt Link to comment Share on other sites More sharing options...
Yannick Pons Posted October 25, 2015 Author Report Share Posted October 25, 2015 Sure I'll do a build log, think in US you've never seen a little car with 2 monster woofers ^^ Something I didn't ask, I never understood what value I have to consider for displacement, anyone can explain it to me ? and how if that value for one sp4 18" ? Link to comment Share on other sites More sharing options...
bighossf150 Posted October 25, 2015 Report Share Posted October 25, 2015 displacement for a sp4 18 is .26 cubes, that is how much airspace the sub itself takes up Used to have a loud truck 2009 Corvette Z06, H/C/I, 150 shot, g force tune, 730rwhp/690rwtq 2013 F-150 limited, MPT Tune, leveled on 35"s Link to comment Share on other sites More sharing options...
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